diff options
789 files changed, 11548 insertions, 5223 deletions
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index 82048f800d0..5f77656e5c1 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -291,6 +291,14 @@ jobs: - name: x86_64-gnu-distcheck os: ubuntu-20.04-xl env: {} + - name: x86_64-gnu-llvm-15 + env: + RUST_BACKTRACE: 1 + os: ubuntu-20.04-xl + - name: x86_64-gnu-llvm-14 + env: + RUST_BACKTRACE: 1 + os: ubuntu-20.04-xl - name: x86_64-gnu-llvm-13 env: RUST_BACKTRACE: 1 diff --git a/.mailmap b/.mailmap index 022cdd0fd50..8ed692989cc 100644 --- a/.mailmap +++ b/.mailmap @@ -15,6 +15,7 @@ Adrien Tétar <adri-from-59@hotmail.fr> Ahmed Charles <ahmedcharles@gmail.com> <acharles@outlook.com> Alan Egerton <eggyal@gmail.com> Alan Stoate <alan.stoate@gmail.com> +Albert Larsan <albert.larsan@gmail.com> Albert Larsan <74931857+albertlarsan68@users.noreply.github.com> Alessandro Decina <alessandro.d@gmail.com> Alex Burka <durka42+github@gmail.com> Alex Burka <aburka@seas.upenn.edu> Alex Hansen <ahansen2@trinity.edu> @@ -324,6 +325,7 @@ Lennart Kudling <github@kudling.de> Léo Lanteri Thauvin <leseulartichaut@gmail.com> Léo Lanteri Thauvin <leseulartichaut@gmail.com> <38361244+LeSeulArtichaut@users.noreply.github.com> Léo Testard <leo.testard@gmail.com> +León Orell Valerian Liehr <me@fmease.dev> <liehr.exchange@gmx.net> Leonardo Yvens <leoyvens@gmail.com> Liigo Zhuang <liigo@qq.com> Lily Ballard <lily@ballards.net> <kevin@sb.org> diff --git a/Cargo.lock b/Cargo.lock index b3afaaa35c0..3175e98e81e 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -351,7 +351,7 @@ dependencies = [ "cargo-test-macro", "cargo-test-support", "cargo-util", - "clap 4.1.1", + "clap 4.1.3", "crates-io", "curl", "curl-sys", @@ -551,9 +551,9 @@ version = "0.1.0" [[package]] name = "cc" -version = "1.0.76" +version = "1.0.77" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "76a284da2e6fe2092f2353e51713435363112dfd60030e22add80be333fb928f" +checksum = "e9f73505338f7d905b19d18738976aae232eb46b8efc15554ffc56deb5d9ebe4" dependencies = [ "jobserver", ] @@ -655,9 +655,9 @@ dependencies = [ [[package]] name = "clap" -version = "4.1.1" +version = "4.1.3" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "4ec7a4128863c188deefe750ac1d1dfe66c236909f845af04beed823638dc1b2" +checksum = "d8d93d855ce6a0aa87b8473ef9169482f40abaa2e9e0993024c35c902cbd5920" dependencies = [ "bitflags", "clap_derive 4.1.0", @@ -675,7 +675,7 @@ version = "4.0.7" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "10861370d2ba66b0f5989f83ebf35db6421713fd92351790e7fdd6c36774c56b" dependencies = [ - "clap 4.1.1", + "clap 4.1.3", ] [[package]] @@ -2294,7 +2294,7 @@ name = "jsondoclint" version = "0.1.0" dependencies = [ "anyhow", - "clap 4.1.1", + "clap 4.1.3", "fs-err", "rustdoc-json-types", "serde", @@ -2557,7 +2557,7 @@ dependencies = [ "ammonia", "anyhow", "chrono", - "clap 4.1.1", + "clap 4.1.3", "clap_complete", "elasticlunr-rs", "env_logger 0.10.0", @@ -3528,7 +3528,7 @@ dependencies = [ name = "rustbook" version = "0.1.0" dependencies = [ - "clap 4.1.1", + "clap 4.1.3", "env_logger 0.7.1", "mdbook", ] @@ -4326,6 +4326,7 @@ dependencies = [ name = "rustc_metadata" version = "0.0.0" dependencies = [ + "bitflags", "libloading", "odht", "rustc_ast", @@ -4925,7 +4926,7 @@ dependencies = [ [[package]] name = "rustfmt-config_proc_macro" -version = "0.2.0" +version = "0.3.0" dependencies = [ "proc-macro2", "quote", @@ -4935,7 +4936,7 @@ dependencies = [ [[package]] name = "rustfmt-nightly" -version = "1.5.1" +version = "1.5.2" dependencies = [ "annotate-snippets", "anyhow", @@ -5608,6 +5609,7 @@ dependencies = [ "lazy_static", "miropt-test-tools", "regex", + "semver", "termcolor", "walkdir", ] diff --git a/RELEASES.md b/RELEASES.md index 2901bfcc3e3..a63d4e8a043 100644 --- a/RELEASES.md +++ b/RELEASES.md @@ -1,3 +1,106 @@ +Version 1.67.0 (2023-01-26) +========================== + +<a id="1.67.0-Language"></a> + +Language +-------- + +- [Make `Sized` predicates coinductive, allowing cycles.](https://github.com/rust-lang/rust/pull/100386/) +- [`#[must_use]` annotations on `async fn` also affect the `Future::Output`.](https://github.com/rust-lang/rust/pull/100633/) +- [Elaborate supertrait obligations when deducing closure signatures.](https://github.com/rust-lang/rust/pull/101834/) +- [Invalid literals are no longer an error under `cfg(FALSE)`.](https://github.com/rust-lang/rust/pull/102944/) +- [Unreserve braced enum variants in value namespace.](https://github.com/rust-lang/rust/pull/103578/) + +<a id="1.67.0-Compiler"></a> + +Compiler +-------- + +- [Enable varargs support for calling conventions other than `C` or `cdecl`.](https://github.com/rust-lang/rust/pull/97971/) +- [Add new MIR constant propagation based on dataflow analysis.](https://github.com/rust-lang/rust/pull/101168/) +- [Optimize field ordering by grouping m\*2^n-sized fields with equivalently aligned ones.](https://github.com/rust-lang/rust/pull/102750/) +- [Stabilize native library modifier `verbatim`.](https://github.com/rust-lang/rust/pull/104360/) + +Added and removed targets: + +- [Add a tier 3 target for PowerPC on AIX](https://github.com/rust-lang/rust/pull/102293/), `powerpc64-ibm-aix`. +- [Add a tier 3 target for the Sony PlayStation 1](https://github.com/rust-lang/rust/pull/102689/), `mipsel-sony-psx`. +- [Add tier 3 `no_std` targets for the QNX Neutrino RTOS](https://github.com/rust-lang/rust/pull/102701/), + `aarch64-unknown-nto-qnx710` and `x86_64-pc-nto-qnx710`. +- [Remove tier 3 `linuxkernel` targets](https://github.com/rust-lang/rust/pull/104015/) (not used by the actual kernel). + +Refer to Rust's [platform support page][platform-support-doc] +for more information on Rust's tiered platform support. + +<a id="1.67.0-Libraries"></a> + +Libraries +--------- + +- [Merge `crossbeam-channel` into `std::sync::mpsc`.](https://github.com/rust-lang/rust/pull/93563/) +- [Fix inconsistent rounding of 0.5 when formatted to 0 decimal places.](https://github.com/rust-lang/rust/pull/102935/) +- [Derive `Eq` and `Hash` for `ControlFlow`.](https://github.com/rust-lang/rust/pull/103084/) +- [Don't build `compiler_builtins` with `-C panic=abort`.](https://github.com/rust-lang/rust/pull/103786/) + +<a id="1.67.0-Stabilized-APIs"></a> + +Stabilized APIs +--------------- + +- [`{integer}::checked_ilog`](https://doc.rust-lang.org/stable/std/primitive.i32.html#method.checked_ilog) +- [`{integer}::checked_ilog2`](https://doc.rust-lang.org/stable/std/primitive.i32.html#method.checked_ilog2) +- [`{integer}::checked_ilog10`](https://doc.rust-lang.org/stable/std/primitive.i32.html#method.checked_ilog10) +- [`{integer}::ilog`](https://doc.rust-lang.org/stable/std/primitive.i32.html#method.ilog) +- [`{integer}::ilog2`](https://doc.rust-lang.org/stable/std/primitive.i32.html#method.ilog2) +- [`{integer}::ilog10`](https://doc.rust-lang.org/stable/std/primitive.i32.html#method.ilog10) +- [`NonZeroU*::ilog2`](https://doc.rust-lang.org/stable/std/num/struct.NonZeroU32.html#method.ilog2) +- [`NonZeroU*::ilog10`](https://doc.rust-lang.org/stable/std/num/struct.NonZeroU32.html#method.ilog10) +- [`NonZero*::BITS`](https://doc.rust-lang.org/stable/std/num/struct.NonZeroU32.html#associatedconstant.BITS) + +These APIs are now stable in const contexts: + +- [`char::from_u32`](https://doc.rust-lang.org/stable/std/primitive.char.html#method.from_u32) +- [`char::from_digit`](https://doc.rust-lang.org/stable/std/primitive.char.html#method.from_digit) +- [`char::to_digit`](https://doc.rust-lang.org/stable/std/primitive.char.html#method.to_digit) +- [`core::char::from_u32`](https://doc.rust-lang.org/stable/core/char/fn.from_u32.html) +- [`core::char::from_digit`](https://doc.rust-lang.org/stable/core/char/fn.from_digit.html) + +<a id="1.67.0-Compatibility-Notes"></a> + +Compatibility Notes +------------------- + +- [The layout of `repr(Rust)` types now groups m\*2^n-sized fields with + equivalently aligned ones.](https://github.com/rust-lang/rust/pull/102750/) + This is intended to be an optimization, but it is also known to increase type + sizes in a few cases for the placement of enum tags. As a reminder, the layout + of `repr(Rust)` types is an implementation detail, subject to change. +- [0.5 now rounds to 0 when formatted to 0 decimal places.](https://github.com/rust-lang/rust/pull/102935/) + This makes it consistent with the rest of floating point formatting that + rounds ties toward even digits. +- [Chains of `&&` and `||` will now drop temporaries from their sub-expressions in + evaluation order, left-to-right.](https://github.com/rust-lang/rust/pull/103293/) + Previously, it was "twisted" such that the _first_ expression dropped its + temporaries _last_, after all of the other expressions dropped in order. +- [Underscore suffixes on string literals are now a hard error.](https://github.com/rust-lang/rust/pull/103914/) + This has been a future-compatibility warning since 1.20.0. +- [Stop passing `-export-dynamic` to `wasm-ld`.](https://github.com/rust-lang/rust/pull/105405/) +- [`main` is now mangled as `__main_void` on `wasm32-wasi`.](https://github.com/rust-lang/rust/pull/105468/) +- [Cargo now emits an error if there are multiple registries in the configuration + with the same index URL.](https://github.com/rust-lang/cargo/pull/10592) + +<a id="1.67.0-Internal-Changes"></a> + +Internal Changes +---------------- + +These changes do not affect any public interfaces of Rust, but they represent +significant improvements to the performance or internals of rustc and related +tools. + +- [Rewrite LLVM's archive writer in Rust.](https://github.com/rust-lang/rust/pull/97485/) + Version 1.66.1 (2023-01-10) =========================== diff --git a/compiler/rustc_ast/src/visit.rs b/compiler/rustc_ast/src/visit.rs index e8823eff83a..feb5187536f 100644 --- a/compiler/rustc_ast/src/visit.rs +++ b/compiler/rustc_ast/src/visit.rs @@ -400,8 +400,8 @@ pub fn walk_ty<'a, V: Visitor<'a>>(visitor: &mut V, typ: &'a Ty) { walk_list!(visitor, visit_lifetime, opt_lifetime, LifetimeCtxt::Ref); visitor.visit_ty(&mutable_type.ty) } - TyKind::Tup(tuple_element_types) => { - walk_list!(visitor, visit_ty, tuple_element_types); + TyKind::Tup(tys) => { + walk_list!(visitor, visit_ty, tys); } TyKind::BareFn(function_declaration) => { walk_list!(visitor, visit_generic_param, &function_declaration.generic_params); diff --git a/compiler/rustc_ast_passes/src/ast_validation.rs b/compiler/rustc_ast_passes/src/ast_validation.rs index 55ea12d25ea..902b4b1a1ec 100644 --- a/compiler/rustc_ast_passes/src/ast_validation.rs +++ b/compiler/rustc_ast_passes/src/ast_validation.rs @@ -1100,16 +1100,17 @@ impl<'a> Visitor<'a> for AstValidator<'a> { replace_span: self.ending_semi_or_hi(item.span), extern_block_suggestion: match sig.header.ext { Extern::None => None, - Extern::Implicit(start_span) => Some(ExternBlockSuggestion { + Extern::Implicit(start_span) => Some(ExternBlockSuggestion::Implicit { start_span, end_span: item.span.shrink_to_hi(), - abi: None, - }), - Extern::Explicit(abi, start_span) => Some(ExternBlockSuggestion { - start_span, - end_span: item.span.shrink_to_hi(), - abi: Some(abi.symbol_unescaped), }), + Extern::Explicit(abi, start_span) => { + Some(ExternBlockSuggestion::Explicit { + start_span, + end_span: item.span.shrink_to_hi(), + abi: abi.symbol_unescaped, + }) + } }, }); } diff --git a/compiler/rustc_ast_passes/src/errors.rs b/compiler/rustc_ast_passes/src/errors.rs index 59f582f10d9..09e262452b1 100644 --- a/compiler/rustc_ast_passes/src/errors.rs +++ b/compiler/rustc_ast_passes/src/errors.rs @@ -1,6 +1,5 @@ //! Errors emitted by ast_passes. -use rustc_errors::{fluent, AddToDiagnostic, Applicability, Diagnostic, SubdiagnosticMessage}; use rustc_macros::{Diagnostic, Subdiagnostic}; use rustc_span::{Span, Symbol}; @@ -207,28 +206,21 @@ pub struct FnWithoutBody { pub extern_block_suggestion: Option<ExternBlockSuggestion>, } -pub struct ExternBlockSuggestion { - pub start_span: Span, - pub end_span: Span, - pub abi: Option<Symbol>, -} - -impl AddToDiagnostic for ExternBlockSuggestion { - fn add_to_diagnostic_with<F>(self, diag: &mut Diagnostic, _: F) - where - F: Fn(&mut Diagnostic, SubdiagnosticMessage) -> SubdiagnosticMessage, - { - let start_suggestion = if let Some(abi) = self.abi { - format!("extern \"{}\" {{", abi) - } else { - "extern {".to_owned() - }; - let end_suggestion = " }".to_owned(); - - diag.multipart_suggestion( - fluent::extern_block_suggestion, - vec![(self.start_span, start_suggestion), (self.end_span, end_suggestion)], - Applicability::MaybeIncorrect, - ); - } +#[derive(Subdiagnostic)] +pub enum ExternBlockSuggestion { + #[multipart_suggestion(ast_passes_extern_block_suggestion, applicability = "maybe-incorrect")] + Implicit { + #[suggestion_part(code = "extern {{")] + start_span: Span, + #[suggestion_part(code = " }}")] + end_span: Span, + }, + #[multipart_suggestion(ast_passes_extern_block_suggestion, applicability = "maybe-incorrect")] + Explicit { + #[suggestion_part(code = "extern \"{abi}\" {{")] + start_span: Span, + #[suggestion_part(code = " }}")] + end_span: Span, + abi: Symbol, + }, } diff --git a/compiler/rustc_borrowck/src/borrowck_errors.rs b/compiler/rustc_borrowck/src/borrowck_errors.rs index a4943d11204..2bbb9618dbf 100644 --- a/compiler/rustc_borrowck/src/borrowck_errors.rs +++ b/compiler/rustc_borrowck/src/borrowck_errors.rs @@ -37,7 +37,7 @@ impl<'cx, 'tcx> crate::MirBorrowckCtxt<'cx, 'tcx> { desc, ); - err.span_label(borrow_span, format!("borrow of {} occurs here", borrow_desc)); + err.span_label(borrow_span, format!("{} is borrowed here", borrow_desc)); err.span_label(span, format!("use of borrowed {}", borrow_desc)); err } @@ -250,8 +250,8 @@ impl<'cx, 'tcx> crate::MirBorrowckCtxt<'cx, 'tcx> { desc, ); - err.span_label(borrow_span, format!("borrow of {} occurs here", desc)); - err.span_label(span, format!("assignment to borrowed {} occurs here", desc)); + err.span_label(borrow_span, format!("{} is borrowed here", desc)); + err.span_label(span, format!("{} is assigned to here but it was already borrowed", desc)); err } diff --git a/compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs b/compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs index e512099b93b..a1eb2960d7b 100644 --- a/compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs +++ b/compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs @@ -766,7 +766,7 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> { let copy_did = infcx.tcx.require_lang_item(LangItem::Copy, Some(span)); let cause = ObligationCause::new( span, - self.mir_hir_id(), + self.mir_def_id(), rustc_infer::traits::ObligationCauseCode::MiscObligation, ); let errors = rustc_trait_selection::traits::fully_solve_bound( @@ -1736,7 +1736,7 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> { &self.local_names, &mut err, "", - None, + Some(borrow_span), None, ); } @@ -2193,7 +2193,7 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> { let mut back_edge_stack = Vec::new(); predecessor_locations(self.body, location).for_each(|predecessor| { - if location.dominates(predecessor, &self.dominators) { + if location.dominates(predecessor, self.dominators()) { back_edge_stack.push(predecessor) } else { stack.push(predecessor); @@ -2305,7 +2305,7 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> { let mut has_predecessor = false; predecessor_locations(self.body, location).for_each(|predecessor| { - if location.dominates(predecessor, &self.dominators) { + if location.dominates(predecessor, self.dominators()) { back_edge_stack.push(predecessor) } else { stack.push(predecessor); diff --git a/compiler/rustc_borrowck/src/diagnostics/explain_borrow.rs b/compiler/rustc_borrowck/src/diagnostics/explain_borrow.rs index 2095747097b..19855075ced 100644 --- a/compiler/rustc_borrowck/src/diagnostics/explain_borrow.rs +++ b/compiler/rustc_borrowck/src/diagnostics/explain_borrow.rs @@ -1,6 +1,8 @@ //! Print diagnostics to explain why values are borrowed. use rustc_errors::{Applicability, Diagnostic}; +use rustc_hir as hir; +use rustc_hir::intravisit::Visitor; use rustc_index::vec::IndexVec; use rustc_infer::infer::NllRegionVariableOrigin; use rustc_middle::mir::{ @@ -11,6 +13,7 @@ use rustc_middle::ty::adjustment::PointerCast; use rustc_middle::ty::{self, RegionVid, TyCtxt}; use rustc_span::symbol::{kw, Symbol}; use rustc_span::{sym, DesugaringKind, Span}; +use rustc_trait_selection::traits::error_reporting::FindExprBySpan; use crate::region_infer::{BlameConstraint, ExtraConstraintInfo}; use crate::{ @@ -63,6 +66,36 @@ impl<'tcx> BorrowExplanation<'tcx> { borrow_span: Option<Span>, multiple_borrow_span: Option<(Span, Span)>, ) { + if let Some(span) = borrow_span { + let def_id = body.source.def_id(); + if let Some(node) = tcx.hir().get_if_local(def_id) + && let Some(body_id) = node.body_id() + { + let body = tcx.hir().body(body_id); + let mut expr_finder = FindExprBySpan::new(span); + expr_finder.visit_expr(body.value); + if let Some(mut expr) = expr_finder.result { + while let hir::ExprKind::AddrOf(_, _, inner) + | hir::ExprKind::Unary(hir::UnOp::Deref, inner) + | hir::ExprKind::Field(inner, _) + | hir::ExprKind::MethodCall(_, inner, _, _) + | hir::ExprKind::Index(inner, _) = &expr.kind + { + expr = inner; + } + if let hir::ExprKind::Path(hir::QPath::Resolved(None, p)) = expr.kind + && let [hir::PathSegment { ident, args: None, .. }] = p.segments + && let hir::def::Res::Local(hir_id) = p.res + && let Some(hir::Node::Pat(pat)) = tcx.hir().find(hir_id) + { + err.span_label( + pat.span, + &format!("binding `{ident}` declared here"), + ); + } + } + } + } match *self { BorrowExplanation::UsedLater(later_use_kind, var_or_use_span, path_span) => { let message = match later_use_kind { diff --git a/compiler/rustc_borrowck/src/diagnostics/move_errors.rs b/compiler/rustc_borrowck/src/diagnostics/move_errors.rs index 6db3c858ae7..ea58ad5ae3e 100644 --- a/compiler/rustc_borrowck/src/diagnostics/move_errors.rs +++ b/compiler/rustc_borrowck/src/diagnostics/move_errors.rs @@ -448,7 +448,7 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> { }; self.note_type_does_not_implement_copy(err, &place_desc, place_ty, Some(span), ""); - use_spans.args_span_label(err, format!("move out of {place_desc} occurs here")); + use_spans.args_span_label(err, format!("{place_desc} is moved here")); } } } diff --git a/compiler/rustc_borrowck/src/diagnostics/region_errors.rs b/compiler/rustc_borrowck/src/diagnostics/region_errors.rs index 187861ba127..87db08ef5b5 100644 --- a/compiler/rustc_borrowck/src/diagnostics/region_errors.rs +++ b/compiler/rustc_borrowck/src/diagnostics/region_errors.rs @@ -813,17 +813,10 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> { if *outlived_f != ty::ReStatic { return; } + let suitable_region = self.infcx.tcx.is_suitable_region(f); + let Some(suitable_region) = suitable_region else { return; }; - let fn_returns = self - .infcx - .tcx - .is_suitable_region(f) - .map(|r| self.infcx.tcx.return_type_impl_or_dyn_traits(r.def_id)) - .unwrap_or_default(); - - if fn_returns.is_empty() { - return; - } + let fn_returns = self.infcx.tcx.return_type_impl_or_dyn_traits(suitable_region.def_id); let param = if let Some(param) = find_param_with_region(self.infcx.tcx, f, outlived_f) { param @@ -839,15 +832,43 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> { }; let captures = format!("captures data from {arg}"); - return nice_region_error::suggest_new_region_bound( - self.infcx.tcx, - diag, - fn_returns, - lifetime.to_string(), - Some(arg), - captures, - Some((param.param_ty_span, param.param_ty.to_string())), - self.infcx.tcx.is_suitable_region(f).map(|r| r.def_id), + if !fn_returns.is_empty() { + nice_region_error::suggest_new_region_bound( + self.infcx.tcx, + diag, + fn_returns, + lifetime.to_string(), + Some(arg), + captures, + Some((param.param_ty_span, param.param_ty.to_string())), + Some(suitable_region.def_id), + ); + return; + } + + let Some((alias_tys, alias_span)) = self + .infcx + .tcx + .return_type_impl_or_dyn_traits_with_type_alias(suitable_region.def_id) else { return; }; + + // in case the return type of the method is a type alias + let mut spans_suggs: Vec<_> = Vec::new(); + for alias_ty in alias_tys { + if alias_ty.span.desugaring_kind().is_some() { + // Skip `async` desugaring `impl Future`. + () + } + if let TyKind::TraitObject(_, lt, _) = alias_ty.kind { + spans_suggs.push((lt.ident.span.shrink_to_hi(), " + 'a".to_string())); + } + } + spans_suggs.push((alias_span.shrink_to_hi(), "<'a>".to_string())); + diag.multipart_suggestion_verbose( + &format!( + "to declare that the trait object {captures}, you can add a lifetime parameter `'a` in the type alias" + ), + spans_suggs, + Applicability::MaybeIncorrect, ); } } diff --git a/compiler/rustc_borrowck/src/lib.rs b/compiler/rustc_borrowck/src/lib.rs index 2384f851a66..73ea7314b75 100644 --- a/compiler/rustc_borrowck/src/lib.rs +++ b/compiler/rustc_borrowck/src/lib.rs @@ -5,6 +5,7 @@ #![feature(let_chains)] #![feature(min_specialization)] #![feature(never_type)] +#![feature(once_cell)] #![feature(rustc_attrs)] #![feature(stmt_expr_attributes)] #![feature(trusted_step)] @@ -39,6 +40,7 @@ use rustc_span::{Span, Symbol}; use either::Either; use smallvec::SmallVec; +use std::cell::OnceCell; use std::cell::RefCell; use std::collections::BTreeMap; use std::rc::Rc; @@ -333,7 +335,7 @@ fn do_mir_borrowck<'tcx>( used_mut: Default::default(), used_mut_upvars: SmallVec::new(), borrow_set: Rc::clone(&borrow_set), - dominators: Dominators::dummy(), // not used + dominators: Default::default(), upvars: Vec::new(), local_names: IndexVec::from_elem(None, &promoted_body.local_decls), region_names: RefCell::default(), @@ -346,8 +348,6 @@ fn do_mir_borrowck<'tcx>( }; } - let dominators = body.basic_blocks.dominators(); - let mut mbcx = MirBorrowckCtxt { infcx, param_env, @@ -364,7 +364,7 @@ fn do_mir_borrowck<'tcx>( used_mut: Default::default(), used_mut_upvars: SmallVec::new(), borrow_set: Rc::clone(&borrow_set), - dominators, + dominators: Default::default(), upvars, local_names, region_names: RefCell::default(), @@ -534,7 +534,7 @@ struct MirBorrowckCtxt<'cx, 'tcx> { borrow_set: Rc<BorrowSet<'tcx>>, /// Dominators for MIR - dominators: Dominators<BasicBlock>, + dominators: OnceCell<Dominators<BasicBlock>>, /// Information about upvars not necessarily preserved in types or MIR upvars: Vec<Upvar<'tcx>>, @@ -1051,7 +1051,7 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> { (Read(kind), BorrowKind::Unique | BorrowKind::Mut { .. }) => { // Reading from mere reservations of mutable-borrows is OK. - if !is_active(&this.dominators, borrow, location) { + if !is_active(this.dominators(), borrow, location) { assert!(allow_two_phase_borrow(borrow.kind)); return Control::Continue; } @@ -2219,6 +2219,10 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> { fn is_upvar_field_projection(&self, place_ref: PlaceRef<'tcx>) -> Option<Field> { path_utils::is_upvar_field_projection(self.infcx.tcx, &self.upvars, place_ref, self.body()) } + + fn dominators(&self) -> &Dominators<BasicBlock> { + self.dominators.get_or_init(|| self.body.basic_blocks.dominators()) + } } mod error { diff --git a/compiler/rustc_borrowck/src/region_infer/mod.rs b/compiler/rustc_borrowck/src/region_infer/mod.rs index 238172ea399..2ae13990a45 100644 --- a/compiler/rustc_borrowck/src/region_infer/mod.rs +++ b/compiler/rustc_borrowck/src/region_infer/mod.rs @@ -7,7 +7,6 @@ use rustc_data_structures::fx::{FxHashMap, FxHashSet}; use rustc_data_structures::graph::scc::Sccs; use rustc_errors::Diagnostic; use rustc_hir::def_id::CRATE_DEF_ID; -use rustc_hir::CRATE_HIR_ID; use rustc_index::vec::IndexVec; use rustc_infer::infer::outlives::test_type_match; use rustc_infer::infer::region_constraints::{GenericKind, VarInfos, VerifyBound, VerifyIfEq}; @@ -2022,7 +2021,7 @@ impl<'tcx> RegionInferenceContext<'tcx> { .map(|constraint| BlameConstraint { category: constraint.category, from_closure: constraint.from_closure, - cause: ObligationCause::new(constraint.span, CRATE_HIR_ID, cause_code.clone()), + cause: ObligationCause::new(constraint.span, CRATE_DEF_ID, cause_code.clone()), variance_info: constraint.variance_info, outlives_constraint: *constraint, }) diff --git a/compiler/rustc_borrowck/src/region_infer/opaque_types.rs b/compiler/rustc_borrowck/src/region_infer/opaque_types.rs index db5a67a8b44..ef6de8b1091 100644 --- a/compiler/rustc_borrowck/src/region_infer/opaque_types.rs +++ b/compiler/rustc_borrowck/src/region_infer/opaque_types.rs @@ -273,7 +273,6 @@ impl<'tcx> InferCtxtExt<'tcx> for InferCtxt<'tcx> { // This logic duplicates most of `check_opaque_meets_bounds`. // FIXME(oli-obk): Also do region checks here and then consider removing `check_opaque_meets_bounds` entirely. let param_env = self.tcx.param_env(def_id); - let body_id = self.tcx.local_def_id_to_hir_id(def_id); // HACK This bubble is required for this tests to pass: // type-alias-impl-trait/issue-67844-nested-opaque.rs let infcx = @@ -290,7 +289,7 @@ impl<'tcx> InferCtxtExt<'tcx> for InferCtxt<'tcx> { // the bounds that the function supplies. let opaque_ty = self.tcx.mk_opaque(def_id.to_def_id(), id_substs); if let Err(err) = ocx.eq( - &ObligationCause::misc(instantiated_ty.span, body_id), + &ObligationCause::misc(instantiated_ty.span, def_id), param_env, opaque_ty, definition_ty, @@ -298,7 +297,7 @@ impl<'tcx> InferCtxtExt<'tcx> for InferCtxt<'tcx> { infcx .err_ctxt() .report_mismatched_types( - &ObligationCause::misc(instantiated_ty.span, body_id), + &ObligationCause::misc(instantiated_ty.span, def_id), opaque_ty, definition_ty, err, @@ -309,7 +308,7 @@ impl<'tcx> InferCtxtExt<'tcx> for InferCtxt<'tcx> { ocx.register_obligation(Obligation::misc( infcx.tcx, instantiated_ty.span, - body_id, + def_id, param_env, predicate, )); diff --git a/compiler/rustc_borrowck/src/universal_regions.rs b/compiler/rustc_borrowck/src/universal_regions.rs index 5b4d99682d9..8bff66f8d5c 100644 --- a/compiler/rustc_borrowck/src/universal_regions.rs +++ b/compiler/rustc_borrowck/src/universal_regions.rs @@ -162,7 +162,7 @@ struct UniversalRegionIndices<'tcx> { /// `ty::Region` to the internal `RegionVid` we are using. This is /// used because trait matching and type-checking will feed us /// region constraints that reference those regions and we need to - /// be able to map them our internal `RegionVid`. This is + /// be able to map them to our internal `RegionVid`. This is /// basically equivalent to an `InternalSubsts`, except that it also /// contains an entry for `ReStatic` -- it might be nice to just /// use a substs, and then handle `ReStatic` another way. diff --git a/compiler/rustc_builtin_macros/src/deriving/clone.rs b/compiler/rustc_builtin_macros/src/deriving/clone.rs index 3f174e2d901..ef5a75f428d 100644 --- a/compiler/rustc_builtin_macros/src/deriving/clone.rs +++ b/compiler/rustc_builtin_macros/src/deriving/clone.rs @@ -82,7 +82,7 @@ pub fn expand_deriving_clone( nonself_args: Vec::new(), ret_ty: Self_, attributes: attrs, - unify_fieldless_variants: false, + fieldless_variants_strategy: FieldlessVariantsStrategy::Default, combine_substructure: substructure, }], associated_types: Vec::new(), @@ -177,7 +177,9 @@ fn cs_clone( all_fields = af; vdata = &variant.data; } - EnumTag(..) => cx.span_bug(trait_span, &format!("enum tags in `derive({})`", name,)), + EnumTag(..) | AllFieldlessEnum(..) => { + cx.span_bug(trait_span, &format!("enum tags in `derive({})`", name,)) + } StaticEnum(..) | StaticStruct(..) => { cx.span_bug(trait_span, &format!("associated function in `derive({})`", name)) } diff --git a/compiler/rustc_builtin_macros/src/deriving/cmp/eq.rs b/compiler/rustc_builtin_macros/src/deriving/cmp/eq.rs index f861d47ed40..3e994f037ad 100644 --- a/compiler/rustc_builtin_macros/src/deriving/cmp/eq.rs +++ b/compiler/rustc_builtin_macros/src/deriving/cmp/eq.rs @@ -36,7 +36,7 @@ pub fn expand_deriving_eq( nonself_args: vec![], ret_ty: Unit, attributes: attrs, - unify_fieldless_variants: true, + fieldless_variants_strategy: FieldlessVariantsStrategy::Unify, combine_substructure: combine_substructure(Box::new(|a, b, c| { cs_total_eq_assert(a, b, c) })), diff --git a/compiler/rustc_builtin_macros/src/deriving/cmp/ord.rs b/compiler/rustc_builtin_macros/src/deriving/cmp/ord.rs index 96d18c7afb9..a926fca4e65 100644 --- a/compiler/rustc_builtin_macros/src/deriving/cmp/ord.rs +++ b/compiler/rustc_builtin_macros/src/deriving/cmp/ord.rs @@ -29,7 +29,7 @@ pub fn expand_deriving_ord( nonself_args: vec![(self_ref(), sym::other)], ret_ty: Path(path_std!(cmp::Ordering)), attributes: attrs, - unify_fieldless_variants: true, + fieldless_variants_strategy: FieldlessVariantsStrategy::Unify, combine_substructure: combine_substructure(Box::new(|a, b, c| cs_cmp(a, b, c))), }], associated_types: Vec::new(), diff --git a/compiler/rustc_builtin_macros/src/deriving/cmp/partial_eq.rs b/compiler/rustc_builtin_macros/src/deriving/cmp/partial_eq.rs index 7f95551fc48..9051fe0b28a 100644 --- a/compiler/rustc_builtin_macros/src/deriving/cmp/partial_eq.rs +++ b/compiler/rustc_builtin_macros/src/deriving/cmp/partial_eq.rs @@ -76,7 +76,7 @@ pub fn expand_deriving_partial_eq( nonself_args: vec![(self_ref(), sym::other)], ret_ty: Path(path_local!(bool)), attributes: attrs, - unify_fieldless_variants: true, + fieldless_variants_strategy: FieldlessVariantsStrategy::Unify, combine_substructure: combine_substructure(Box::new(|a, b, c| cs_eq(a, b, c))), }]; diff --git a/compiler/rustc_builtin_macros/src/deriving/cmp/partial_ord.rs b/compiler/rustc_builtin_macros/src/deriving/cmp/partial_ord.rs index 5c4e5b7f816..c9dc8921262 100644 --- a/compiler/rustc_builtin_macros/src/deriving/cmp/partial_ord.rs +++ b/compiler/rustc_builtin_macros/src/deriving/cmp/partial_ord.rs @@ -28,7 +28,7 @@ pub fn expand_deriving_partial_ord( nonself_args: vec![(self_ref(), sym::other)], ret_ty, attributes: attrs, - unify_fieldless_variants: true, + fieldless_variants_strategy: FieldlessVariantsStrategy::Unify, combine_substructure: combine_substructure(Box::new(|cx, span, substr| { cs_partial_cmp(cx, span, substr) })), diff --git a/compiler/rustc_builtin_macros/src/deriving/debug.rs b/compiler/rustc_builtin_macros/src/deriving/debug.rs index 5b1b7e6804c..e0f487e8648 100644 --- a/compiler/rustc_builtin_macros/src/deriving/debug.rs +++ b/compiler/rustc_builtin_macros/src/deriving/debug.rs @@ -2,6 +2,7 @@ use crate::deriving::generic::ty::*; use crate::deriving::generic::*; use crate::deriving::path_std; +use ast::EnumDef; use rustc_ast::{self as ast, MetaItem}; use rustc_expand::base::{Annotatable, ExtCtxt}; use rustc_span::symbol::{sym, Ident, Symbol}; @@ -31,7 +32,8 @@ pub fn expand_deriving_debug( nonself_args: vec![(fmtr, sym::f)], ret_ty: Path(path_std!(fmt::Result)), attributes: ast::AttrVec::new(), - unify_fieldless_variants: false, + fieldless_variants_strategy: + FieldlessVariantsStrategy::SpecializeIfAllVariantsFieldless, combine_substructure: combine_substructure(Box::new(|a, b, c| { show_substructure(a, b, c) })), @@ -43,16 +45,18 @@ pub fn expand_deriving_debug( } fn show_substructure(cx: &mut ExtCtxt<'_>, span: Span, substr: &Substructure<'_>) -> BlockOrExpr { + // We want to make sure we have the ctxt set so that we can use unstable methods + let span = cx.with_def_site_ctxt(span); + let (ident, vdata, fields) = match substr.fields { Struct(vdata, fields) => (substr.type_ident, *vdata, fields), EnumMatching(_, _, v, fields) => (v.ident, &v.data, fields), + AllFieldlessEnum(enum_def) => return show_fieldless_enum(cx, span, enum_def, substr), EnumTag(..) | StaticStruct(..) | StaticEnum(..) => { cx.span_bug(span, "nonsensical .fields in `#[derive(Debug)]`") } }; - // We want to make sure we have the ctxt set so that we can use unstable methods - let span = cx.with_def_site_ctxt(span); let name = cx.expr_str(span, ident.name); let fmt = substr.nonselflike_args[0].clone(); @@ -173,3 +177,47 @@ fn show_substructure(cx: &mut ExtCtxt<'_>, span: Span, substr: &Substructure<'_> BlockOrExpr::new_mixed(stmts, Some(expr)) } } + +/// Special case for enums with no fields. Builds: +/// ```text +/// impl ::core::fmt::Debug for A { +/// fn fmt(&self, f: &mut ::core::fmt::Formatter) -> ::core::fmt::Result { +/// ::core::fmt::Formatter::write_str(f, +/// match self { +/// A::A => "A", +/// A::B() => "B", +/// A::C {} => "C", +/// }) +/// } +/// } +/// ``` +fn show_fieldless_enum( + cx: &mut ExtCtxt<'_>, + span: Span, + def: &EnumDef, + substr: &Substructure<'_>, +) -> BlockOrExpr { + let fmt = substr.nonselflike_args[0].clone(); + let arms = def + .variants + .iter() + .map(|v| { + let variant_path = cx.path(span, vec![substr.type_ident, v.ident]); + let pat = match &v.data { + ast::VariantData::Tuple(fields, _) => { + debug_assert!(fields.is_empty()); + cx.pat_tuple_struct(span, variant_path, vec![]) + } + ast::VariantData::Struct(fields, _) => { + debug_assert!(fields.is_empty()); + cx.pat_struct(span, variant_path, vec![]) + } + ast::VariantData::Unit(_) => cx.pat_path(span, variant_path), + }; + cx.arm(span, pat, cx.expr_str(span, v.ident.name)) + }) + .collect::<Vec<_>>(); + let name = cx.expr_match(span, cx.expr_self(span), arms); + let fn_path_write_str = cx.std_path(&[sym::fmt, sym::Formatter, sym::write_str]); + BlockOrExpr::new_expr(cx.expr_call_global(span, fn_path_write_str, vec![fmt, name])) +} diff --git a/compiler/rustc_builtin_macros/src/deriving/decodable.rs b/compiler/rustc_builtin_macros/src/deriving/decodable.rs index 62af02c2bb4..5f9519dad1b 100644 --- a/compiler/rustc_builtin_macros/src/deriving/decodable.rs +++ b/compiler/rustc_builtin_macros/src/deriving/decodable.rs @@ -49,7 +49,7 @@ pub fn expand_deriving_rustc_decodable( PathKind::Std, )), attributes: ast::AttrVec::new(), - unify_fieldless_variants: false, + fieldless_variants_strategy: FieldlessVariantsStrategy::Default, combine_substructure: combine_substructure(Box::new(|a, b, c| { decodable_substructure(a, b, c, krate) })), diff --git a/compiler/rustc_builtin_macros/src/deriving/default.rs b/compiler/rustc_builtin_macros/src/deriving/default.rs index eb66c4a69a6..18270747296 100644 --- a/compiler/rustc_builtin_macros/src/deriving/default.rs +++ b/compiler/rustc_builtin_macros/src/deriving/default.rs @@ -34,7 +34,7 @@ pub fn expand_deriving_default( nonself_args: Vec::new(), ret_ty: Self_, attributes: attrs, - unify_fieldless_variants: false, + fieldless_variants_strategy: FieldlessVariantsStrategy::Default, combine_substructure: combine_substructure(Box::new(|cx, trait_span, substr| { match substr.fields { StaticStruct(_, fields) => { diff --git a/compiler/rustc_builtin_macros/src/deriving/encodable.rs b/compiler/rustc_builtin_macros/src/deriving/encodable.rs index 68bc0ff2ec0..2afeed927ac 100644 --- a/compiler/rustc_builtin_macros/src/deriving/encodable.rs +++ b/compiler/rustc_builtin_macros/src/deriving/encodable.rs @@ -133,7 +133,7 @@ pub fn expand_deriving_rustc_encodable( PathKind::Std, )), attributes: AttrVec::new(), - unify_fieldless_variants: false, + fieldless_variants_strategy: FieldlessVariantsStrategy::Default, combine_substructure: combine_substructure(Box::new(|a, b, c| { encodable_substructure(a, b, c, krate) })), diff --git a/compiler/rustc_builtin_macros/src/deriving/generic/mod.rs b/compiler/rustc_builtin_macros/src/deriving/generic/mod.rs index beac591bfc8..17b7ac0eba1 100644 --- a/compiler/rustc_builtin_macros/src/deriving/generic/mod.rs +++ b/compiler/rustc_builtin_macros/src/deriving/generic/mod.rs @@ -222,14 +222,27 @@ pub struct MethodDef<'a> { pub attributes: ast::AttrVec, - /// Can we combine fieldless variants for enums into a single match arm? - /// If true, indicates that the trait operation uses the enum tag in some - /// way. - pub unify_fieldless_variants: bool, + pub fieldless_variants_strategy: FieldlessVariantsStrategy, pub combine_substructure: RefCell<CombineSubstructureFunc<'a>>, } +/// How to handle fieldless enum variants. +#[derive(PartialEq)] +pub enum FieldlessVariantsStrategy { + /// Combine fieldless variants into a single match arm. + /// This assumes that relevant information has been handled + /// by looking at the enum's discriminant. + Unify, + /// Don't do anything special about fieldless variants. They are + /// handled like any other variant. + Default, + /// If all variants of the enum are fieldless, expand the special + /// `AllFieldLessEnum` substructure, so that the entire enum can be handled + /// at once. + SpecializeIfAllVariantsFieldless, +} + /// All the data about the data structure/method being derived upon. pub struct Substructure<'a> { /// ident of self @@ -264,9 +277,14 @@ pub enum StaticFields { /// A summary of the possible sets of fields. pub enum SubstructureFields<'a> { - /// A non-static method with `Self` is a struct. + /// A non-static method where `Self` is a struct. Struct(&'a ast::VariantData, Vec<FieldInfo>), + /// A non-static method handling the entire enum at once + /// (after it has been determined that none of the enum + /// variants has any fields). + AllFieldlessEnum(&'a ast::EnumDef), + /// Matching variants of the enum: variant index, variant count, ast::Variant, /// fields: the field name is only non-`None` in the case of a struct /// variant. @@ -1086,8 +1104,8 @@ impl<'a> MethodDef<'a> { /// ``` /// Creates a tag check combined with a match for a tuple of all /// `selflike_args`, with an arm for each variant with fields, possibly an - /// arm for each fieldless variant (if `!unify_fieldless_variants` is not - /// true), and possibly a default arm. + /// arm for each fieldless variant (if `unify_fieldless_variants` is not + /// `Unify`), and possibly a default arm. fn expand_enum_method_body<'b>( &self, cx: &mut ExtCtxt<'_>, @@ -1101,7 +1119,8 @@ impl<'a> MethodDef<'a> { let variants = &enum_def.variants; // Traits that unify fieldless variants always use the tag(s). - let uses_tags = self.unify_fieldless_variants; + let unify_fieldless_variants = + self.fieldless_variants_strategy == FieldlessVariantsStrategy::Unify; // There is no sensible code to be generated for *any* deriving on a // zero-variant enum. So we just generate a failing expression. @@ -1161,23 +1180,35 @@ impl<'a> MethodDef<'a> { // match is necessary. let all_fieldless = variants.iter().all(|v| v.data.fields().is_empty()); if all_fieldless { - if uses_tags && variants.len() > 1 { - // If the type is fieldless and the trait uses the tag and - // there are multiple variants, we need just an operation on - // the tag(s). - let (tag_field, mut tag_let_stmts) = get_tag_pieces(cx); - let mut tag_check = self.call_substructure_method( - cx, - trait_, - type_ident, - nonselflike_args, - &EnumTag(tag_field, None), - ); - tag_let_stmts.append(&mut tag_check.0); - return BlockOrExpr(tag_let_stmts, tag_check.1); - } - - if variants.len() == 1 { + if variants.len() > 1 { + match self.fieldless_variants_strategy { + FieldlessVariantsStrategy::Unify => { + // If the type is fieldless and the trait uses the tag and + // there are multiple variants, we need just an operation on + // the tag(s). + let (tag_field, mut tag_let_stmts) = get_tag_pieces(cx); + let mut tag_check = self.call_substructure_method( + cx, + trait_, + type_ident, + nonselflike_args, + &EnumTag(tag_field, None), + ); + tag_let_stmts.append(&mut tag_check.0); + return BlockOrExpr(tag_let_stmts, tag_check.1); + } + FieldlessVariantsStrategy::SpecializeIfAllVariantsFieldless => { + return self.call_substructure_method( + cx, + trait_, + type_ident, + nonselflike_args, + &AllFieldlessEnum(enum_def), + ); + } + FieldlessVariantsStrategy::Default => (), + } + } else if variants.len() == 1 { // If there is a single variant, we don't need an operation on // the tag(s). Just use the most degenerate result. return self.call_substructure_method( @@ -1187,7 +1218,7 @@ impl<'a> MethodDef<'a> { nonselflike_args, &EnumMatching(0, 1, &variants[0], Vec::new()), ); - }; + } } // These arms are of the form: @@ -1198,7 +1229,7 @@ impl<'a> MethodDef<'a> { let mut match_arms: Vec<ast::Arm> = variants .iter() .enumerate() - .filter(|&(_, v)| !(self.unify_fieldless_variants && v.data.fields().is_empty())) + .filter(|&(_, v)| !(unify_fieldless_variants && v.data.fields().is_empty())) .map(|(index, variant)| { // A single arm has form (&VariantK, &VariantK, ...) => BodyK // (see "Final wrinkle" note below for why.) @@ -1249,7 +1280,7 @@ impl<'a> MethodDef<'a> { // Add a default arm to the match, if necessary. let first_fieldless = variants.iter().find(|v| v.data.fields().is_empty()); let default = match first_fieldless { - Some(v) if self.unify_fieldless_variants => { + Some(v) if unify_fieldless_variants => { // We need a default case that handles all the fieldless // variants. The index and actual variant aren't meaningful in // this case, so just use dummy values. @@ -1296,7 +1327,7 @@ impl<'a> MethodDef<'a> { // If the trait uses the tag and there are multiple variants, we need // to add a tag check operation before the match. Otherwise, the match // is enough. - if uses_tags && variants.len() > 1 { + if unify_fieldless_variants && variants.len() > 1 { let (tag_field, mut tag_let_stmts) = get_tag_pieces(cx); // Combine a tag check with the match. @@ -1580,5 +1611,6 @@ where } } StaticEnum(..) | StaticStruct(..) => cx.span_bug(trait_span, "static function in `derive`"), + AllFieldlessEnum(..) => cx.span_bug(trait_span, "fieldless enum in `derive`"), } } diff --git a/compiler/rustc_builtin_macros/src/deriving/hash.rs b/compiler/rustc_builtin_macros/src/deriving/hash.rs index c136bb7141a..f8570d8f86a 100644 --- a/compiler/rustc_builtin_macros/src/deriving/hash.rs +++ b/compiler/rustc_builtin_macros/src/deriving/hash.rs @@ -33,7 +33,7 @@ pub fn expand_deriving_hash( nonself_args: vec![(Ref(Box::new(Path(arg)), Mutability::Mut), sym::state)], ret_ty: Unit, attributes: AttrVec::new(), - unify_fieldless_variants: true, + fieldless_variants_strategy: FieldlessVariantsStrategy::Unify, combine_substructure: combine_substructure(Box::new(|a, b, c| { hash_substructure(a, b, c) })), diff --git a/compiler/rustc_codegen_llvm/src/coverageinfo/mapgen.rs b/compiler/rustc_codegen_llvm/src/coverageinfo/mapgen.rs index 393bf30e9f8..22c61248b7d 100644 --- a/compiler/rustc_codegen_llvm/src/coverageinfo/mapgen.rs +++ b/compiler/rustc_codegen_llvm/src/coverageinfo/mapgen.rs @@ -8,7 +8,7 @@ use rustc_codegen_ssa::coverageinfo::map::{Counter, CounterExpression}; use rustc_codegen_ssa::traits::{ConstMethods, CoverageInfoMethods}; use rustc_data_structures::fx::FxIndexSet; use rustc_hir::def::DefKind; -use rustc_hir::def_id::DefIdSet; +use rustc_hir::def_id::DefId; use rustc_llvm::RustString; use rustc_middle::bug; use rustc_middle::middle::codegen_fn_attrs::CodegenFnAttrFlags; @@ -291,7 +291,7 @@ fn add_unused_functions(cx: &CodegenCx<'_, '_>) { let ignore_unused_generics = tcx.sess.instrument_coverage_except_unused_generics(); - let eligible_def_ids: DefIdSet = tcx + let eligible_def_ids: Vec<DefId> = tcx .mir_keys(()) .iter() .filter_map(|local_def_id| { @@ -317,7 +317,9 @@ fn add_unused_functions(cx: &CodegenCx<'_, '_>) { let codegenned_def_ids = tcx.codegened_and_inlined_items(()); - for &non_codegenned_def_id in eligible_def_ids.difference(codegenned_def_ids) { + for non_codegenned_def_id in + eligible_def_ids.into_iter().filter(|id| !codegenned_def_ids.contains(id)) + { let codegen_fn_attrs = tcx.codegen_fn_attrs(non_codegenned_def_id); // If a function is marked `#[no_coverage]`, then skip generating a diff --git a/compiler/rustc_codegen_ssa/src/back/symbol_export.rs b/compiler/rustc_codegen_ssa/src/back/symbol_export.rs index 8cb7d74b90d..57a99e74c21 100644 --- a/compiler/rustc_codegen_ssa/src/back/symbol_export.rs +++ b/compiler/rustc_codegen_ssa/src/back/symbol_export.rs @@ -173,11 +173,15 @@ fn exported_symbols_provider_local( return &[]; } - let mut symbols: Vec<_> = tcx - .reachable_non_generics(LOCAL_CRATE) - .iter() - .map(|(&def_id, &info)| (ExportedSymbol::NonGeneric(def_id), info)) - .collect(); + // FIXME: Sorting this is unnecessary since we are sorting later anyway. + // Can we skip the later sorting? + let mut symbols: Vec<_> = tcx.with_stable_hashing_context(|hcx| { + tcx.reachable_non_generics(LOCAL_CRATE) + .to_sorted(&hcx, true) + .into_iter() + .map(|(&def_id, &info)| (ExportedSymbol::NonGeneric(def_id), info)) + .collect() + }); if tcx.entry_fn(()).is_some() { let exported_symbol = diff --git a/compiler/rustc_codegen_ssa/src/base.rs b/compiler/rustc_codegen_ssa/src/base.rs index f7312f6fcda..32d3cfe6fc6 100644 --- a/compiler/rustc_codegen_ssa/src/base.rs +++ b/compiler/rustc_codegen_ssa/src/base.rs @@ -964,16 +964,19 @@ pub fn provide(providers: &mut Providers) { }; let (defids, _) = tcx.collect_and_partition_mono_items(cratenum); - for id in &*defids { + + let any_for_speed = defids.items().any(|id| { let CodegenFnAttrs { optimize, .. } = tcx.codegen_fn_attrs(*id); match optimize { - attr::OptimizeAttr::None => continue, - attr::OptimizeAttr::Size => continue, - attr::OptimizeAttr::Speed => { - return for_speed; - } + attr::OptimizeAttr::None | attr::OptimizeAttr::Size => false, + attr::OptimizeAttr::Speed => true, } + }); + + if any_for_speed { + return for_speed; } + tcx.sess.opts.optimize }; } diff --git a/compiler/rustc_const_eval/src/const_eval/error.rs b/compiler/rustc_const_eval/src/const_eval/error.rs index 13472cc2bfa..0579f781535 100644 --- a/compiler/rustc_const_eval/src/const_eval/error.rs +++ b/compiler/rustc_const_eval/src/const_eval/error.rs @@ -36,16 +36,16 @@ impl<'tcx> Into<InterpErrorInfo<'tcx>> for ConstEvalErrKind { impl fmt::Display for ConstEvalErrKind { fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { use self::ConstEvalErrKind::*; - match *self { + match self { ConstAccessesStatic => write!(f, "constant accesses static"), ModifiedGlobal => { write!(f, "modifying a static's initial value from another static's initializer") } - AssertFailure(ref msg) => write!(f, "{:?}", msg), + AssertFailure(msg) => write!(f, "{:?}", msg), Panic { msg, line, col, file } => { write!(f, "the evaluated program panicked at '{}', {}:{}:{}", msg, file, line, col) } - Abort(ref msg) => write!(f, "{}", msg), + Abort(msg) => write!(f, "{}", msg), } } } diff --git a/compiler/rustc_const_eval/src/const_eval/machine.rs b/compiler/rustc_const_eval/src/const_eval/machine.rs index ca6b01d8a8a..4709514c82e 100644 --- a/compiler/rustc_const_eval/src/const_eval/machine.rs +++ b/compiler/rustc_const_eval/src/const_eval/machine.rs @@ -533,7 +533,7 @@ impl<'mir, 'tcx> interpret::Machine<'mir, 'tcx> for CompileTimeInterpreter<'mir, let eval_to_int = |op| ecx.read_immediate(&ecx.eval_operand(op, None)?).map(|x| x.to_const_int()); let err = match msg { - BoundsCheck { ref len, ref index } => { + BoundsCheck { len, index } => { let len = eval_to_int(len)?; let index = eval_to_int(index)?; BoundsCheck { len, index } diff --git a/compiler/rustc_const_eval/src/interpret/cast.rs b/compiler/rustc_const_eval/src/interpret/cast.rs index 986b6d65530..b2c847d3fd8 100644 --- a/compiler/rustc_const_eval/src/interpret/cast.rs +++ b/compiler/rustc_const_eval/src/interpret/cast.rs @@ -347,7 +347,7 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> { let new_vptr = self.get_vtable_ptr(ty, data_b.principal())?; self.write_immediate(Immediate::new_dyn_trait(old_data, new_vptr, self), dest) } - (_, &ty::Dynamic(ref data, _, ty::Dyn)) => { + (_, &ty::Dynamic(data, _, ty::Dyn)) => { // Initial cast from sized to dyn trait let vtable = self.get_vtable_ptr(src_pointee_ty, data.principal())?; let ptr = self.read_scalar(src)?; diff --git a/compiler/rustc_const_eval/src/interpret/intrinsics.rs b/compiler/rustc_const_eval/src/interpret/intrinsics.rs index 666fcbd6f80..cc7b6c91b60 100644 --- a/compiler/rustc_const_eval/src/interpret/intrinsics.rs +++ b/compiler/rustc_const_eval/src/interpret/intrinsics.rs @@ -79,9 +79,7 @@ pub(crate) fn eval_nullary_intrinsic<'tcx>( } sym::variant_count => match tp_ty.kind() { // Correctly handles non-monomorphic calls, so there is no need for ensure_monomorphic_enough. - ty::Adt(ref adt, _) => { - ConstValue::from_machine_usize(adt.variants().len() as u64, &tcx) - } + ty::Adt(adt, _) => ConstValue::from_machine_usize(adt.variants().len() as u64, &tcx), ty::Alias(..) | ty::Param(_) | ty::Placeholder(_) | ty::Infer(_) => { throw_inval!(TooGeneric) } diff --git a/compiler/rustc_const_eval/src/interpret/memory.rs b/compiler/rustc_const_eval/src/interpret/memory.rs index 2f31bfc9100..291bfb2b558 100644 --- a/compiler/rustc_const_eval/src/interpret/memory.rs +++ b/compiler/rustc_const_eval/src/interpret/memory.rs @@ -863,7 +863,7 @@ impl<'a, 'mir, 'tcx, M: Machine<'mir, 'tcx>> std::fmt::Debug for DumpAllocs<'a, write!(fmt, "{id:?}")?; match self.ecx.memory.alloc_map.get(id) { - Some(&(kind, ref alloc)) => { + Some((kind, alloc)) => { // normal alloc write!(fmt, " ({}, ", kind)?; write_allocation_track_relocs( diff --git a/compiler/rustc_const_eval/src/interpret/operand.rs b/compiler/rustc_const_eval/src/interpret/operand.rs index 7e93f1b8ef5..befc0928f3d 100644 --- a/compiler/rustc_const_eval/src/interpret/operand.rs +++ b/compiler/rustc_const_eval/src/interpret/operand.rs @@ -533,11 +533,11 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> { layout: Option<TyAndLayout<'tcx>>, ) -> InterpResult<'tcx, OpTy<'tcx, M::Provenance>> { use rustc_middle::mir::Operand::*; - let op = match *mir_op { + let op = match mir_op { // FIXME: do some more logic on `move` to invalidate the old location - Copy(place) | Move(place) => self.eval_place_to_op(place, layout)?, + &Copy(place) | &Move(place) => self.eval_place_to_op(place, layout)?, - Constant(ref constant) => { + Constant(constant) => { let c = self.subst_from_current_frame_and_normalize_erasing_regions(constant.literal)?; diff --git a/compiler/rustc_const_eval/src/interpret/step.rs b/compiler/rustc_const_eval/src/interpret/step.rs index 81b44a49484..fad4cb06cd6 100644 --- a/compiler/rustc_const_eval/src/interpret/step.rs +++ b/compiler/rustc_const_eval/src/interpret/step.rs @@ -111,7 +111,7 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> { M::retag_place_contents(self, *kind, &dest)?; } - Intrinsic(box ref intrinsic) => self.emulate_nondiverging_intrinsic(intrinsic)?, + Intrinsic(box intrinsic) => self.emulate_nondiverging_intrinsic(intrinsic)?, // Statements we do not track. AscribeUserType(..) => {} @@ -163,8 +163,8 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> { self.copy_op(&op, &dest, /*allow_transmute*/ false)?; } - CopyForDeref(ref place) => { - let op = self.eval_place_to_op(*place, Some(dest.layout))?; + CopyForDeref(place) => { + let op = self.eval_place_to_op(place, Some(dest.layout))?; self.copy_op(&op, &dest, /* allow_transmute*/ false)?; } diff --git a/compiler/rustc_const_eval/src/interpret/validity.rs b/compiler/rustc_const_eval/src/interpret/validity.rs index 43bea23b651..19e359986a1 100644 --- a/compiler/rustc_const_eval/src/interpret/validity.rs +++ b/compiler/rustc_const_eval/src/interpret/validity.rs @@ -419,7 +419,7 @@ impl<'rt, 'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> ValidityVisitor<'rt, 'mir, ' ) } // Recursive checking - if let Some(ref mut ref_tracking) = self.ref_tracking { + if let Some(ref_tracking) = self.ref_tracking.as_deref_mut() { // Proceed recursively even for ZST, no reason to skip them! // `!` is a ZST and we want to validate it. if let Ok((alloc_id, _offset, _prov)) = self.ecx.ptr_try_get_alloc_id(place.ptr) { diff --git a/compiler/rustc_const_eval/src/interpret/visitor.rs b/compiler/rustc_const_eval/src/interpret/visitor.rs index 1a10851a9f9..f9efc2418db 100644 --- a/compiler/rustc_const_eval/src/interpret/visitor.rs +++ b/compiler/rustc_const_eval/src/interpret/visitor.rs @@ -481,12 +481,12 @@ macro_rules! make_value_visitor { }; // Visit the fields of this value. - match v.layout().fields { + match &v.layout().fields { FieldsShape::Primitive => {} - FieldsShape::Union(fields) => { + &FieldsShape::Union(fields) => { self.visit_union(v, fields)?; } - FieldsShape::Arbitrary { ref offsets, .. } => { + FieldsShape::Arbitrary { offsets, .. } => { // FIXME: We collect in a vec because otherwise there are lifetime // errors: Projecting to a field needs access to `ecx`. let fields: Vec<InterpResult<'tcx, Self::V>> = diff --git a/compiler/rustc_const_eval/src/transform/check_consts/check.rs b/compiler/rustc_const_eval/src/transform/check_consts/check.rs index d4c75cd55ce..cc40c2566d2 100644 --- a/compiler/rustc_const_eval/src/transform/check_consts/check.rs +++ b/compiler/rustc_const_eval/src/transform/check_consts/check.rs @@ -442,7 +442,7 @@ impl<'tcx> Visitor<'tcx> for Checker<'_, 'tcx> { self.super_rvalue(rvalue, location); - match *rvalue { + match rvalue { Rvalue::ThreadLocalRef(_) => self.check_op(ops::ThreadLocalAccess), Rvalue::Use(_) @@ -451,18 +451,15 @@ impl<'tcx> Visitor<'tcx> for Checker<'_, 'tcx> { | Rvalue::Discriminant(..) | Rvalue::Len(_) => {} - Rvalue::Aggregate(ref kind, ..) => { - if let AggregateKind::Generator(def_id, ..) = kind.as_ref() { - if let Some(generator_kind) = self.tcx.generator_kind(def_id.to_def_id()) { - if matches!(generator_kind, hir::GeneratorKind::Async(..)) { - self.check_op(ops::Generator(generator_kind)); - } - } + Rvalue::Aggregate(kind, ..) => { + if let AggregateKind::Generator(def_id, ..) = kind.as_ref() + && let Some(generator_kind @ hir::GeneratorKind::Async(..)) = self.tcx.generator_kind(def_id.to_def_id()) + { + self.check_op(ops::Generator(generator_kind)); } } - Rvalue::Ref(_, kind @ BorrowKind::Mut { .. }, ref place) - | Rvalue::Ref(_, kind @ BorrowKind::Unique, ref place) => { + Rvalue::Ref(_, kind @ (BorrowKind::Mut { .. } | BorrowKind::Unique), place) => { let ty = place.ty(self.body, self.tcx).ty; let is_allowed = match ty.kind() { // Inside a `static mut`, `&mut [...]` is allowed. @@ -491,12 +488,12 @@ impl<'tcx> Visitor<'tcx> for Checker<'_, 'tcx> { } } - Rvalue::AddressOf(Mutability::Mut, ref place) => { + Rvalue::AddressOf(Mutability::Mut, place) => { self.check_mut_borrow(place.local, hir::BorrowKind::Raw) } - Rvalue::Ref(_, BorrowKind::Shared | BorrowKind::Shallow, ref place) - | Rvalue::AddressOf(Mutability::Not, ref place) => { + Rvalue::Ref(_, BorrowKind::Shared | BorrowKind::Shallow, place) + | Rvalue::AddressOf(Mutability::Not, place) => { let borrowed_place_has_mut_interior = qualifs::in_place::<HasMutInterior, _>( &self.ccx, &mut |local| self.qualifs.has_mut_interior(self.ccx, local, location), @@ -564,7 +561,7 @@ impl<'tcx> Visitor<'tcx> for Checker<'_, 'tcx> { Rvalue::NullaryOp(NullOp::SizeOf | NullOp::AlignOf, _) => {} Rvalue::ShallowInitBox(_, _) => {} - Rvalue::UnaryOp(_, ref operand) => { + Rvalue::UnaryOp(_, operand) => { let ty = operand.ty(self.body, self.tcx); if is_int_bool_or_char(ty) { // Int, bool, and char operations are fine. @@ -575,8 +572,8 @@ impl<'tcx> Visitor<'tcx> for Checker<'_, 'tcx> { } } - Rvalue::BinaryOp(op, box (ref lhs, ref rhs)) - | Rvalue::CheckedBinaryOp(op, box (ref lhs, ref rhs)) => { + Rvalue::BinaryOp(op, box (lhs, rhs)) + | Rvalue::CheckedBinaryOp(op, box (lhs, rhs)) => { let lhs_ty = lhs.ty(self.body, self.tcx); let rhs_ty = rhs.ty(self.body, self.tcx); @@ -585,13 +582,16 @@ impl<'tcx> Visitor<'tcx> for Checker<'_, 'tcx> { } else if lhs_ty.is_fn_ptr() || lhs_ty.is_unsafe_ptr() { assert_eq!(lhs_ty, rhs_ty); assert!( - op == BinOp::Eq - || op == BinOp::Ne - || op == BinOp::Le - || op == BinOp::Lt - || op == BinOp::Ge - || op == BinOp::Gt - || op == BinOp::Offset + matches!( + op, + BinOp::Eq + | BinOp::Ne + | BinOp::Le + | BinOp::Lt + | BinOp::Ge + | BinOp::Gt + | BinOp::Offset + ) ); self.check_op(ops::RawPtrComparison); @@ -754,12 +754,9 @@ impl<'tcx> Visitor<'tcx> for Checker<'_, 'tcx> { let ocx = ObligationCtxt::new(&infcx); let predicates = tcx.predicates_of(callee).instantiate(tcx, substs); - let hir_id = tcx - .hir() - .local_def_id_to_hir_id(self.body.source.def_id().expect_local()); let cause = ObligationCause::new( terminator.source_info.span, - hir_id, + self.body.source.def_id().expect_local(), ObligationCauseCode::ItemObligation(callee), ); let normalized_predicates = ocx.normalize(&cause, param_env, predicates); diff --git a/compiler/rustc_const_eval/src/transform/promote_consts.rs b/compiler/rustc_const_eval/src/transform/promote_consts.rs index 04ce701452b..fae6117f8f0 100644 --- a/compiler/rustc_const_eval/src/transform/promote_consts.rs +++ b/compiler/rustc_const_eval/src/transform/promote_consts.rs @@ -133,7 +133,7 @@ impl<'tcx> Visitor<'tcx> for Collector<'_, 'tcx> { } _ => { /* mark as unpromotable below */ } } - } else if let TempState::Defined { ref mut uses, .. } = *temp { + } else if let TempState::Defined { uses, .. } = temp { // We always allow borrows, even mutable ones, as we need // to promote mutable borrows of some ZSTs e.g., `&mut []`. let allowed_use = match context { @@ -748,7 +748,7 @@ impl<'a, 'tcx> Promoter<'a, 'tcx> { if loc.statement_index < num_stmts { let (mut rvalue, source_info) = { let statement = &mut self.source[loc.block].statements[loc.statement_index]; - let StatementKind::Assign(box (_, ref mut rhs)) = statement.kind else { + let StatementKind::Assign(box (_, rhs)) = &mut statement.kind else { span_bug!( statement.source_info.span, "{:?} is not an assignment", @@ -778,9 +778,9 @@ impl<'a, 'tcx> Promoter<'a, 'tcx> { self.source[loc.block].terminator().clone() } else { let terminator = self.source[loc.block].terminator_mut(); - let target = match terminator.kind { - TerminatorKind::Call { target: Some(target), .. } => target, - ref kind => { + let target = match &terminator.kind { + TerminatorKind::Call { target: Some(target), .. } => *target, + kind => { span_bug!(terminator.source_info.span, "{:?} not promotable", kind); } }; @@ -814,7 +814,7 @@ impl<'a, 'tcx> Promoter<'a, 'tcx> { ..terminator }; } - ref kind => { + kind => { span_bug!(terminator.source_info.span, "{:?} not promotable", kind); } }; @@ -847,54 +847,50 @@ impl<'a, 'tcx> Promoter<'a, 'tcx> { let local_decls = &mut self.source.local_decls; let loc = candidate.location; let statement = &mut blocks[loc.block].statements[loc.statement_index]; - match statement.kind { - StatementKind::Assign(box ( - _, - Rvalue::Ref(ref mut region, borrow_kind, ref mut place), - )) => { - // Use the underlying local for this (necessarily interior) borrow. - let ty = local_decls[place.local].ty; - let span = statement.source_info.span; - - let ref_ty = tcx.mk_ref( - tcx.lifetimes.re_erased, - ty::TypeAndMut { ty, mutbl: borrow_kind.to_mutbl_lossy() }, - ); + let StatementKind::Assign(box (_, Rvalue::Ref(region, borrow_kind, place))) = &mut statement.kind else { + bug!() + }; - *region = tcx.lifetimes.re_erased; - - let mut projection = vec![PlaceElem::Deref]; - projection.extend(place.projection); - place.projection = tcx.intern_place_elems(&projection); - - // Create a temp to hold the promoted reference. - // This is because `*r` requires `r` to be a local, - // otherwise we would use the `promoted` directly. - let mut promoted_ref = LocalDecl::new(ref_ty, span); - promoted_ref.source_info = statement.source_info; - let promoted_ref = local_decls.push(promoted_ref); - assert_eq!(self.temps.push(TempState::Unpromotable), promoted_ref); - - let promoted_ref_statement = Statement { - source_info: statement.source_info, - kind: StatementKind::Assign(Box::new(( - Place::from(promoted_ref), - Rvalue::Use(promoted_operand(ref_ty, span)), - ))), - }; - self.extra_statements.push((loc, promoted_ref_statement)); - - Rvalue::Ref( - tcx.lifetimes.re_erased, - borrow_kind, - Place { - local: mem::replace(&mut place.local, promoted_ref), - projection: List::empty(), - }, - ) - } - _ => bug!(), - } + // Use the underlying local for this (necessarily interior) borrow. + let ty = local_decls[place.local].ty; + let span = statement.source_info.span; + + let ref_ty = tcx.mk_ref( + tcx.lifetimes.re_erased, + ty::TypeAndMut { ty, mutbl: borrow_kind.to_mutbl_lossy() }, + ); + + *region = tcx.lifetimes.re_erased; + + let mut projection = vec![PlaceElem::Deref]; + projection.extend(place.projection); + place.projection = tcx.intern_place_elems(&projection); + + // Create a temp to hold the promoted reference. + // This is because `*r` requires `r` to be a local, + // otherwise we would use the `promoted` directly. + let mut promoted_ref = LocalDecl::new(ref_ty, span); + promoted_ref.source_info = statement.source_info; + let promoted_ref = local_decls.push(promoted_ref); + assert_eq!(self.temps.push(TempState::Unpromotable), promoted_ref); + + let promoted_ref_statement = Statement { + source_info: statement.source_info, + kind: StatementKind::Assign(Box::new(( + Place::from(promoted_ref), + Rvalue::Use(promoted_operand(ref_ty, span)), + ))), + }; + self.extra_statements.push((loc, promoted_ref_statement)); + + Rvalue::Ref( + tcx.lifetimes.re_erased, + *borrow_kind, + Place { + local: mem::replace(&mut place.local, promoted_ref), + projection: List::empty(), + }, + ) }; assert_eq!(self.new_block(), START_BLOCK); diff --git a/compiler/rustc_data_structures/src/fx.rs b/compiler/rustc_data_structures/src/fx.rs index 0d0c51b6819..9fce0e1e65c 100644 --- a/compiler/rustc_data_structures/src/fx.rs +++ b/compiler/rustc_data_structures/src/fx.rs @@ -11,8 +11,8 @@ pub type IndexEntry<'a, K, V> = indexmap::map::Entry<'a, K, V>; #[macro_export] macro_rules! define_id_collections { ($map_name:ident, $set_name:ident, $entry_name:ident, $key:ty) => { - pub type $map_name<T> = $crate::fx::FxHashMap<$key, T>; - pub type $set_name = $crate::fx::FxHashSet<$key>; + pub type $map_name<T> = $crate::unord::UnordMap<$key, T>; + pub type $set_name = $crate::unord::UnordSet<$key>; pub type $entry_name<'a, T> = $crate::fx::StdEntry<'a, $key, T>; }; } diff --git a/compiler/rustc_data_structures/src/graph/dominators/mod.rs b/compiler/rustc_data_structures/src/graph/dominators/mod.rs index fb2a22e94a5..6398a501983 100644 --- a/compiler/rustc_data_structures/src/graph/dominators/mod.rs +++ b/compiler/rustc_data_structures/src/graph/dominators/mod.rs @@ -271,10 +271,6 @@ pub struct Dominators<N: Idx> { } impl<Node: Idx> Dominators<Node> { - pub fn dummy() -> Self { - Self { post_order_rank: IndexVec::new(), immediate_dominators: IndexVec::new() } - } - pub fn is_reachable(&self, node: Node) -> bool { self.immediate_dominators[node].is_some() } @@ -289,7 +285,7 @@ impl<Node: Idx> Dominators<Node> { Iter { dominators: self, node: Some(node) } } - pub fn is_dominated_by(&self, node: Node, dom: Node) -> bool { + pub fn dominates(&self, dom: Node, node: Node) -> bool { // FIXME -- could be optimized by using post-order-rank self.dominators(node).any(|n| n == dom) } diff --git a/compiler/rustc_data_structures/src/graph/implementation/tests.rs b/compiler/rustc_data_structures/src/graph/implementation/tests.rs index e4e4d0d44ba..dc1ce1747bf 100644 --- a/compiler/rustc_data_structures/src/graph/implementation/tests.rs +++ b/compiler/rustc_data_structures/src/graph/implementation/tests.rs @@ -70,8 +70,8 @@ fn test_adjacent_edges<N: PartialEq + Debug, E: PartialEq + Debug>( "counter={:?} expected={:?} edge_index={:?} edge={:?}", counter, expected_incoming[counter], edge_index, edge ); - match expected_incoming[counter] { - (ref e, ref n) => { + match &expected_incoming[counter] { + (e, n) => { assert!(e == &edge.data); assert!(n == graph.node_data(edge.source())); assert!(start_index == edge.target); @@ -88,8 +88,8 @@ fn test_adjacent_edges<N: PartialEq + Debug, E: PartialEq + Debug>( "counter={:?} expected={:?} edge_index={:?} edge={:?}", counter, expected_outgoing[counter], edge_index, edge ); - match expected_outgoing[counter] { - (ref e, ref n) => { + match &expected_outgoing[counter] { + (e, n) => { assert!(e == &edge.data); assert!(start_index == edge.source); assert!(n == graph.node_data(edge.target)); diff --git a/compiler/rustc_data_structures/src/sorted_map.rs b/compiler/rustc_data_structures/src/sorted_map.rs index c63caa06818..9409057d484 100644 --- a/compiler/rustc_data_structures/src/sorted_map.rs +++ b/compiler/rustc_data_structures/src/sorted_map.rs @@ -1,6 +1,5 @@ use crate::stable_hasher::{HashStable, StableHasher, StableOrd}; use std::borrow::Borrow; -use std::cmp::Ordering; use std::fmt::Debug; use std::mem; use std::ops::{Bound, Index, IndexMut, RangeBounds}; @@ -171,7 +170,7 @@ impl<K: Ord, V> SortedMap<K, V> { where F: Fn(&mut K), { - self.data.iter_mut().map(|&mut (ref mut k, _)| k).for_each(f); + self.data.iter_mut().map(|(k, _)| k).for_each(f); } /// Inserts a presorted range of elements into the map. If the range can be @@ -232,10 +231,10 @@ impl<K: Ord, V> SortedMap<K, V> { R: RangeBounds<K>, { let start = match range.start_bound() { - Bound::Included(ref k) => match self.lookup_index_for(k) { + Bound::Included(k) => match self.lookup_index_for(k) { Ok(index) | Err(index) => index, }, - Bound::Excluded(ref k) => match self.lookup_index_for(k) { + Bound::Excluded(k) => match self.lookup_index_for(k) { Ok(index) => index + 1, Err(index) => index, }, @@ -243,11 +242,11 @@ impl<K: Ord, V> SortedMap<K, V> { }; let end = match range.end_bound() { - Bound::Included(ref k) => match self.lookup_index_for(k) { + Bound::Included(k) => match self.lookup_index_for(k) { Ok(index) => index + 1, Err(index) => index, }, - Bound::Excluded(ref k) => match self.lookup_index_for(k) { + Bound::Excluded(k) => match self.lookup_index_for(k) { Ok(index) | Err(index) => index, }, Bound::Unbounded => self.data.len(), @@ -302,7 +301,7 @@ impl<K: Ord, V> FromIterator<(K, V)> for SortedMap<K, V> { let mut data: Vec<(K, V)> = iter.into_iter().collect(); data.sort_unstable_by(|(k1, _), (k2, _)| k1.cmp(k2)); - data.dedup_by(|&mut (ref k1, _), &mut (ref k2, _)| k1.cmp(k2) == Ordering::Equal); + data.dedup_by(|(k1, _), (k2, _)| k1 == k2); SortedMap { data } } diff --git a/compiler/rustc_data_structures/src/sorted_map/index_map.rs b/compiler/rustc_data_structures/src/sorted_map/index_map.rs index 7af5c14942a..814e7c7fb9b 100644 --- a/compiler/rustc_data_structures/src/sorted_map/index_map.rs +++ b/compiler/rustc_data_structures/src/sorted_map/index_map.rs @@ -63,13 +63,13 @@ impl<I: Idx, K: Ord, V> SortedIndexMultiMap<I, K, V> { /// Returns an iterator over the items in the map in insertion order. #[inline] pub fn iter(&self) -> impl '_ + DoubleEndedIterator<Item = (&K, &V)> { - self.items.iter().map(|(ref k, ref v)| (k, v)) + self.items.iter().map(|(k, v)| (k, v)) } /// Returns an iterator over the items in the map in insertion order along with their indices. #[inline] pub fn iter_enumerated(&self) -> impl '_ + DoubleEndedIterator<Item = (I, (&K, &V))> { - self.items.iter_enumerated().map(|(i, (ref k, ref v))| (i, (k, v))) + self.items.iter_enumerated().map(|(i, (k, v))| (i, (k, v))) } /// Returns the item in the map with the given index. diff --git a/compiler/rustc_data_structures/src/sorted_map/tests.rs b/compiler/rustc_data_structures/src/sorted_map/tests.rs index 1e977d709f1..3cc250862df 100644 --- a/compiler/rustc_data_structures/src/sorted_map/tests.rs +++ b/compiler/rustc_data_structures/src/sorted_map/tests.rs @@ -6,7 +6,7 @@ fn test_sorted_index_multi_map() { let set: SortedIndexMultiMap<usize, _, _> = entries.iter().copied().collect(); // Insertion order is preserved. - assert!(entries.iter().map(|(ref k, ref v)| (k, v)).eq(set.iter())); + assert!(entries.iter().map(|(k, v)| (k, v)).eq(set.iter())); // Indexing for (i, expect) in entries.iter().enumerate() { diff --git a/compiler/rustc_data_structures/src/tiny_list.rs b/compiler/rustc_data_structures/src/tiny_list.rs index 9b07f86846e..11a408f216a 100644 --- a/compiler/rustc_data_structures/src/tiny_list.rs +++ b/compiler/rustc_data_structures/src/tiny_list.rs @@ -37,9 +37,9 @@ impl<T: PartialEq> TinyList<T> { #[inline] pub fn remove(&mut self, data: &T) -> bool { - self.head = match self.head { - Some(ref mut head) if head.data == *data => head.next.take().map(|x| *x), - Some(ref mut head) => return head.remove_next(data), + self.head = match &mut self.head { + Some(head) if head.data == *data => head.next.take().map(|x| *x), + Some(head) => return head.remove_next(data), None => return false, }; true @@ -48,7 +48,7 @@ impl<T: PartialEq> TinyList<T> { #[inline] pub fn contains(&self, data: &T) -> bool { let mut elem = self.head.as_ref(); - while let Some(ref e) = elem { + while let Some(e) = elem { if &e.data == data { return true; } @@ -65,15 +65,14 @@ struct Element<T> { } impl<T: PartialEq> Element<T> { - fn remove_next(&mut self, data: &T) -> bool { - let mut n = self; + fn remove_next(mut self: &mut Self, data: &T) -> bool { loop { - match n.next { + match self.next { Some(ref mut next) if next.data == *data => { - n.next = next.next.take(); + self.next = next.next.take(); return true; } - Some(ref mut next) => n = next, + Some(ref mut next) => self = next, None => return false, } } diff --git a/compiler/rustc_data_structures/src/tiny_list/tests.rs b/compiler/rustc_data_structures/src/tiny_list/tests.rs index c0334d2e23e..4b95e62bef0 100644 --- a/compiler/rustc_data_structures/src/tiny_list/tests.rs +++ b/compiler/rustc_data_structures/src/tiny_list/tests.rs @@ -6,7 +6,7 @@ use test::{black_box, Bencher}; impl<T> TinyList<T> { fn len(&self) -> usize { let (mut elem, mut count) = (self.head.as_ref(), 0); - while let Some(ref e) = elem { + while let Some(e) = elem { count += 1; elem = e.next.as_deref(); } diff --git a/compiler/rustc_data_structures/src/unord.rs b/compiler/rustc_data_structures/src/unord.rs index 14257e4d5c6..f35f18e51cb 100644 --- a/compiler/rustc_data_structures/src/unord.rs +++ b/compiler/rustc_data_structures/src/unord.rs @@ -6,13 +6,15 @@ use rustc_hash::{FxHashMap, FxHashSet}; use smallvec::SmallVec; use std::{ borrow::Borrow, + collections::hash_map::Entry, hash::Hash, iter::{Product, Sum}, + ops::Index, }; use crate::{ fingerprint::Fingerprint, - stable_hasher::{HashStable, StableHasher, ToStableHashKey}, + stable_hasher::{HashStable, StableHasher, StableOrd, ToStableHashKey}, }; /// `UnordItems` is the order-less version of `Iterator`. It only contains methods @@ -38,17 +40,17 @@ impl<T, I: Iterator<Item = T>> UnordItems<T, I> { } #[inline] - pub fn all<U, F: Fn(T) -> bool>(mut self, f: F) -> bool { + pub fn all<F: Fn(T) -> bool>(mut self, f: F) -> bool { self.0.all(f) } #[inline] - pub fn any<U, F: Fn(T) -> bool>(mut self, f: F) -> bool { + pub fn any<F: Fn(T) -> bool>(mut self, f: F) -> bool { self.0.any(f) } #[inline] - pub fn filter<U, F: Fn(&T) -> bool>(self, f: F) -> UnordItems<T, impl Iterator<Item = T>> { + pub fn filter<F: Fn(&T) -> bool>(self, f: F) -> UnordItems<T, impl Iterator<Item = T>> { UnordItems(self.0.filter(f)) } @@ -96,6 +98,15 @@ impl<T, I: Iterator<Item = T>> UnordItems<T, I> { pub fn count(self) -> usize { self.0.count() } + + #[inline] + pub fn flat_map<U, F, O>(self, f: F) -> UnordItems<O, impl Iterator<Item = O>> + where + U: IntoIterator<Item = O>, + F: Fn(T) -> U, + { + UnordItems(self.0.flat_map(f)) + } } impl<'a, T: Clone + 'a, I: Iterator<Item = &'a T>> UnordItems<&'a T, I> { @@ -147,6 +158,7 @@ pub struct UnordSet<V: Eq + Hash> { } impl<V: Eq + Hash> Default for UnordSet<V> { + #[inline] fn default() -> Self { Self { inner: FxHashSet::default() } } @@ -178,7 +190,16 @@ impl<V: Eq + Hash> UnordSet<V> { } #[inline] - pub fn items(&self) -> UnordItems<&V, impl Iterator<Item = &V>> { + pub fn remove<Q: ?Sized>(&mut self, k: &Q) -> bool + where + V: Borrow<Q>, + Q: Hash + Eq, + { + self.inner.remove(k) + } + + #[inline] + pub fn items<'a>(&'a self) -> UnordItems<&'a V, impl Iterator<Item = &'a V>> { UnordItems(self.inner.iter()) } @@ -187,20 +208,75 @@ impl<V: Eq + Hash> UnordSet<V> { UnordItems(self.inner.into_iter()) } + /// Returns the items of this set in stable sort order (as defined by `ToStableHashKey`). + /// + /// The `cache_sort_key` parameter controls if [slice::sort_by_cached_key] or + /// [slice::sort_unstable_by_key] will be used for sorting the vec. Use + /// `cache_sort_key` when the [ToStableHashKey::to_stable_hash_key] implementation + /// for `V` is expensive (e.g. a `DefId -> DefPathHash` lookup). + #[inline] + pub fn to_sorted<HCX>(&self, hcx: &HCX, cache_sort_key: bool) -> Vec<&V> + where + V: ToStableHashKey<HCX>, + { + to_sorted_vec(hcx, self.inner.iter(), cache_sort_key, |&x| x) + } + + /// Returns the items of this set in stable sort order (as defined by + /// `StableOrd`). This method is much more efficient than + /// `into_sorted` because it does not need to transform keys to their + /// `ToStableHashKey` equivalent. + #[inline] + pub fn to_sorted_stable_ord(&self) -> Vec<V> + where + V: Ord + StableOrd + Copy, + { + let mut items: Vec<V> = self.inner.iter().copied().collect(); + items.sort_unstable(); + items + } + + /// Returns the items of this set in stable sort order (as defined by `ToStableHashKey`). + /// + /// The `cache_sort_key` parameter controls if [slice::sort_by_cached_key] or + /// [slice::sort_unstable_by_key] will be used for sorting the vec. Use + /// `cache_sort_key` when the [ToStableHashKey::to_stable_hash_key] implementation + /// for `V` is expensive (e.g. a `DefId -> DefPathHash` lookup). + #[inline] + pub fn into_sorted<HCX>(self, hcx: &HCX, cache_sort_key: bool) -> Vec<V> + where + V: ToStableHashKey<HCX>, + { + to_sorted_vec(hcx, self.inner.into_iter(), cache_sort_key, |x| x) + } + // We can safely extend this UnordSet from a set of unordered values because that // won't expose the internal ordering anywhere. #[inline] pub fn extend<I: Iterator<Item = V>>(&mut self, items: UnordItems<V, I>) { self.inner.extend(items.0) } + + #[inline] + pub fn clear(&mut self) { + self.inner.clear(); + } } impl<V: Hash + Eq> Extend<V> for UnordSet<V> { + #[inline] fn extend<T: IntoIterator<Item = V>>(&mut self, iter: T) { self.inner.extend(iter) } } +impl<V: Hash + Eq> FromIterator<V> for UnordSet<V> { + #[inline] + fn from_iter<T: IntoIterator<Item = V>>(iter: T) -> Self { + UnordSet { inner: FxHashSet::from_iter(iter) } + } +} + impl<HCX, V: Hash + Eq + HashStable<HCX>> HashStable<HCX> for UnordSet<V> { #[inline] fn hash_stable(&self, hcx: &mut HCX, hasher: &mut StableHasher) { @@ -223,17 +299,33 @@ pub struct UnordMap<K: Eq + Hash, V> { } impl<K: Eq + Hash, V> Default for UnordMap<K, V> { + #[inline] fn default() -> Self { Self { inner: FxHashMap::default() } } } impl<K: Hash + Eq, V> Extend<(K, V)> for UnordMap<K, V> { + #[inline] fn extend<T: IntoIterator<Item = (K, V)>>(&mut self, iter: T) { self.inner.extend(iter) } } +impl<K: Hash + Eq, V> FromIterator<(K, V)> for UnordMap<K, V> { + #[inline] + fn from_iter<T: IntoIterator<Item = (K, V)>>(iter: T) -> Self { + UnordMap { inner: FxHashMap::from_iter(iter) } + } +} + +impl<K: Hash + Eq, V, I: Iterator<Item = (K, V)>> From<UnordItems<(K, V), I>> for UnordMap<K, V> { + #[inline] + fn from(items: UnordItems<(K, V), I>) -> Self { + UnordMap { inner: FxHashMap::from_iter(items.0) } + } +} + impl<K: Eq + Hash, V> UnordMap<K, V> { #[inline] pub fn len(&self) -> usize { @@ -255,7 +347,44 @@ impl<K: Eq + Hash, V> UnordMap<K, V> { } #[inline] - pub fn items(&self) -> UnordItems<(&K, &V), impl Iterator<Item = (&K, &V)>> { + pub fn is_empty(&self) -> bool { + self.inner.is_empty() + } + + #[inline] + pub fn entry(&mut self, key: K) -> Entry<'_, K, V> { + self.inner.entry(key) + } + + #[inline] + pub fn get<Q: ?Sized>(&self, k: &Q) -> Option<&V> + where + K: Borrow<Q>, + Q: Hash + Eq, + { + self.inner.get(k) + } + + #[inline] + pub fn get_mut<Q: ?Sized>(&mut self, k: &Q) -> Option<&mut V> + where + K: Borrow<Q>, + Q: Hash + Eq, + { + self.inner.get_mut(k) + } + + #[inline] + pub fn remove<Q: ?Sized>(&mut self, k: &Q) -> Option<V> + where + K: Borrow<Q>, + Q: Hash + Eq, + { + self.inner.remove(k) + } + + #[inline] + pub fn items<'a>(&'a self) -> UnordItems<(&'a K, &'a V), impl Iterator<Item = (&'a K, &'a V)>> { UnordItems(self.inner.iter()) } @@ -270,6 +399,77 @@ impl<K: Eq + Hash, V> UnordMap<K, V> { pub fn extend<I: Iterator<Item = (K, V)>>(&mut self, items: UnordItems<(K, V), I>) { self.inner.extend(items.0) } + + /// Returns the entries of this map in stable sort order (as defined by `ToStableHashKey`). + /// + /// The `cache_sort_key` parameter controls if [slice::sort_by_cached_key] or + /// [slice::sort_unstable_by_key] will be used for sorting the vec. Use + /// `cache_sort_key` when the [ToStableHashKey::to_stable_hash_key] implementation + /// for `K` is expensive (e.g. a `DefId -> DefPathHash` lookup). + #[inline] + pub fn to_sorted<HCX>(&self, hcx: &HCX, cache_sort_key: bool) -> Vec<(&K, &V)> + where + K: ToStableHashKey<HCX>, + { + to_sorted_vec(hcx, self.inner.iter(), cache_sort_key, |&(k, _)| k) + } + + /// Returns the entries of this map in stable sort order (as defined by `StableOrd`). + /// This method can be much more efficient than `into_sorted` because it does not need + /// to transform keys to their `ToStableHashKey` equivalent. + #[inline] + pub fn to_sorted_stable_ord(&self) -> Vec<(K, &V)> + where + K: Ord + StableOrd + Copy, + { + let mut items: Vec<(K, &V)> = self.inner.iter().map(|(&k, v)| (k, v)).collect(); + items.sort_unstable_by_key(|&(k, _)| k); + items + } + + /// Returns the entries of this map in stable sort order (as defined by `ToStableHashKey`). + /// + /// The `cache_sort_key` parameter controls if [slice::sort_by_cached_key] or + /// [slice::sort_unstable_by_key] will be used for sorting the vec. Use + /// `cache_sort_key` when the [ToStableHashKey::to_stable_hash_key] implementation + /// for `K` is expensive (e.g. a `DefId -> DefPathHash` lookup). + #[inline] + pub fn into_sorted<HCX>(self, hcx: &HCX, cache_sort_key: bool) -> Vec<(K, V)> + where + K: ToStableHashKey<HCX>, + { + to_sorted_vec(hcx, self.inner.into_iter(), cache_sort_key, |(k, _)| k) + } + + /// Returns the values of this map in stable sort order (as defined by K's + /// `ToStableHashKey` implementation). + /// + /// The `cache_sort_key` parameter controls if [slice::sort_by_cached_key] or + /// [slice::sort_unstable_by_key] will be used for sorting the vec. Use + /// `cache_sort_key` when the [ToStableHashKey::to_stable_hash_key] implementation + /// for `K` is expensive (e.g. a `DefId -> DefPathHash` lookup). + #[inline] + pub fn values_sorted<HCX>(&self, hcx: &HCX, cache_sort_key: bool) -> impl Iterator<Item = &V> + where + K: ToStableHashKey<HCX>, + { + to_sorted_vec(hcx, self.inner.iter(), cache_sort_key, |&(k, _)| k) + .into_iter() + .map(|(_, v)| v) + } +} + +impl<K, Q: ?Sized, V> Index<&Q> for UnordMap<K, V> +where + K: Eq + Hash + Borrow<Q>, + Q: Eq + Hash, +{ + type Output = V; + + #[inline] + fn index(&self, key: &Q) -> &V { + &self.inner[key] + } } impl<HCX, K: Hash + Eq + HashStable<HCX>, V: HashStable<HCX>> HashStable<HCX> for UnordMap<K, V> { @@ -334,6 +534,12 @@ impl<T> Extend<T> for UnordBag<T> { } } +impl<T, I: Iterator<Item = T>> From<UnordItems<T, I>> for UnordBag<T> { + fn from(value: UnordItems<T, I>) -> Self { + UnordBag { inner: Vec::from_iter(value.0) } + } +} + impl<HCX, V: Hash + Eq + HashStable<HCX>> HashStable<HCX> for UnordBag<V> { #[inline] fn hash_stable(&self, hcx: &mut HCX, hasher: &mut StableHasher) { @@ -341,6 +547,27 @@ impl<HCX, V: Hash + Eq + HashStable<HCX>> HashStable<HCX> for UnordBag<V> { } } +#[inline] +fn to_sorted_vec<HCX, T, K, I>( + hcx: &HCX, + iter: I, + cache_sort_key: bool, + extract_key: fn(&T) -> &K, +) -> Vec<T> +where + I: Iterator<Item = T>, + K: ToStableHashKey<HCX>, +{ + let mut items: Vec<T> = iter.collect(); + if cache_sort_key { + items.sort_by_cached_key(|x| extract_key(x).to_stable_hash_key(hcx)); + } else { + items.sort_unstable_by_key(|x| extract_key(x).to_stable_hash_key(hcx)); + } + + items +} + fn hash_iter_order_independent< HCX, T: HashStable<HCX>, diff --git a/compiler/rustc_error_codes/src/error_codes.rs b/compiler/rustc_error_codes/src/error_codes.rs index 9d5f4ad7520..4ae372bb904 100644 --- a/compiler/rustc_error_codes/src/error_codes.rs +++ b/compiler/rustc_error_codes/src/error_codes.rs @@ -506,6 +506,7 @@ E0785: include_str!("./error_codes/E0785.md"), E0786: include_str!("./error_codes/E0786.md"), E0787: include_str!("./error_codes/E0787.md"), E0788: include_str!("./error_codes/E0788.md"), +E0789: include_str!("./error_codes/E0789.md"), E0790: include_str!("./error_codes/E0790.md"), E0791: include_str!("./error_codes/E0791.md"), E0792: include_str!("./error_codes/E0792.md"), @@ -645,5 +646,4 @@ E0792: include_str!("./error_codes/E0792.md"), // E0721, // `await` keyword // E0723, // unstable feature in `const` context // E0738, // Removed; errored on `#[track_caller] fn`s in `extern "Rust" { ... }`. - E0789, // rustc_allowed_through_unstable_modules without stability attribute } diff --git a/compiler/rustc_error_codes/src/error_codes/E0789.md b/compiler/rustc_error_codes/src/error_codes/E0789.md new file mode 100644 index 00000000000..89b7cd422fe --- /dev/null +++ b/compiler/rustc_error_codes/src/error_codes/E0789.md @@ -0,0 +1,30 @@ +#### This error code is internal to the compiler and will not be emitted with normal Rust code. + +The internal `rustc_allowed_through_unstable_modules` attribute must be used +on an item with a `stable` attribute. + +Erroneous code example: + +```compile_fail,E0789 +// NOTE: both of these attributes are perma-unstable and should *never* be +// used outside of the compiler and standard library. +#![feature(rustc_attrs)] +#![feature(staged_api)] + +#![unstable(feature = "foo_module", reason = "...", issue = "123")] + +#[rustc_allowed_through_unstable_modules] +// #[stable(feature = "foo", since = "1.0")] +struct Foo; +// ^^^ error: `rustc_allowed_through_unstable_modules` attribute must be +// paired with a `stable` attribute +``` + +Typically when an item is marked with a `stable` attribute, the modules that +enclose the item must also be marked with `stable` attributes, otherwise the +item becomes *de facto* unstable. `#[rustc_allowed_through_unstable_modules]` +is a workaround which allows an item to "escape" its unstable parent modules. +This error occurs when an item is marked with +`#[rustc_allowed_through_unstable_modules]` but no supplementary `stable` +attribute exists. See [#99288](https://github.com/rust-lang/rust/pull/99288) +for an example of `#[rustc_allowed_through_unstable_modules]` in use. diff --git a/compiler/rustc_error_messages/locales/en-US/ast_passes.ftl b/compiler/rustc_error_messages/locales/en-US/ast_passes.ftl index e5cd1142b20..5f28839f136 100644 --- a/compiler/rustc_error_messages/locales/en-US/ast_passes.ftl +++ b/compiler/rustc_error_messages/locales/en-US/ast_passes.ftl @@ -88,4 +88,5 @@ ast_passes_ty_alias_without_body = ast_passes_fn_without_body = free function without a body .suggestion = provide a definition for the function - .extern_block_suggestion = if you meant to declare an externally defined function, use an `extern` block + +ast_passes_extern_block_suggestion = if you meant to declare an externally defined function, use an `extern` block diff --git a/compiler/rustc_error_messages/locales/en-US/infer.ftl b/compiler/rustc_error_messages/locales/en-US/infer.ftl index ae0091b0373..164d6d26d23 100644 --- a/compiler/rustc_error_messages/locales/en-US/infer.ftl +++ b/compiler/rustc_error_messages/locales/en-US/infer.ftl @@ -193,7 +193,7 @@ infer_actual_impl_expl_expected_signature_any = {$leading_ellipsis -> infer_actual_impl_expl_expected_signature_some = {$leading_ellipsis -> [true] ... *[false] {""} -}closure with signature `{$ty_or_sig}` must implement `{$trait_path}`, for some specific lifetime `'{lifetime_1}`... +}closure with signature `{$ty_or_sig}` must implement `{$trait_path}`, for some specific lifetime `'{$lifetime_1}`... infer_actual_impl_expl_expected_signature_nothing = {$leading_ellipsis -> [true] ... *[false] {""} @@ -209,7 +209,7 @@ infer_actual_impl_expl_expected_passive_any = {$leading_ellipsis -> infer_actual_impl_expl_expected_passive_some = {$leading_ellipsis -> [true] ... *[false] {""} -}`{$trait_path}` would have to be implemented for the type `{$ty_or_sig}`, for some specific lifetime `'{lifetime_1}`... +}`{$trait_path}` would have to be implemented for the type `{$ty_or_sig}`, for some specific lifetime `'{$lifetime_1}`... infer_actual_impl_expl_expected_passive_nothing = {$leading_ellipsis -> [true] ... *[false] {""} @@ -225,7 +225,7 @@ infer_actual_impl_expl_expected_other_any = {$leading_ellipsis -> infer_actual_impl_expl_expected_other_some = {$leading_ellipsis -> [true] ... *[false] {""} -}`{$ty_or_sig}` must implement `{$trait_path}`, for some specific lifetime `'{lifetime_1}`... +}`{$ty_or_sig}` must implement `{$trait_path}`, for some specific lifetime `'{$lifetime_1}`... infer_actual_impl_expl_expected_other_nothing = {$leading_ellipsis -> [true] ... *[false] {""} @@ -268,28 +268,28 @@ infer_but_calling_introduces = {$has_param_name -> [true] `{$param_name}` *[false] `fn` parameter } has {$lifetime_kind -> - [named] lifetime `{lifetime}` - *[anon] an anonymous lifetime `'_` -} but calling `{assoc_item}` introduces an implicit `'static` lifetime requirement + [true] lifetime `{$lifetime}` + *[false] an anonymous lifetime `'_` +} but calling `{$assoc_item}` introduces an implicit `'static` lifetime requirement .label1 = {$has_lifetime -> - [named] lifetime `{lifetime}` - *[anon] an anonymous lifetime `'_` + [true] lifetime `{$lifetime}` + *[false] an anonymous lifetime `'_` } .label2 = ...is used and required to live as long as `'static` here because of an implicit lifetime bound on the {$has_impl_path -> - [named] `impl` of `{$impl_path}` - *[anon] inherent `impl` + [true] `impl` of `{$impl_path}` + *[false] inherent `impl` } infer_but_needs_to_satisfy = {$has_param_name -> [true] `{$param_name}` *[false] `fn` parameter } has {$has_lifetime -> - [named] lifetime `{lifetime}` - *[anon] an anonymous lifetime `'_` + [true] lifetime `{$lifetime}` + *[false] an anonymous lifetime `'_` } but it needs to satisfy a `'static` lifetime requirement .influencer = this data with {$has_lifetime -> - [named] lifetime `{lifetime}` - *[anon] an anonymous lifetime `'_` + [true] lifetime `{$lifetime}` + *[false] an anonymous lifetime `'_` }... .require = {$spans_empty -> *[true] ...is used and required to live as long as `'static` here @@ -302,8 +302,8 @@ infer_more_targeted = {$has_param_name -> [true] `{$param_name}` *[false] `fn` parameter } has {$has_lifetime -> - [named] lifetime `{lifetime}` - *[anon] an anonymous lifetime `'_` + [true] lifetime `{$lifetime}` + *[false] an anonymous lifetime `'_` } but calling `{$ident}` introduces an implicit `'static` lifetime requirement infer_ril_introduced_here = `'static` requirement introduced here diff --git a/compiler/rustc_error_messages/locales/en-US/parse.ftl b/compiler/rustc_error_messages/locales/en-US/parse.ftl index 8f063f5082c..a3e2002da78 100644 --- a/compiler/rustc_error_messages/locales/en-US/parse.ftl +++ b/compiler/rustc_error_messages/locales/en-US/parse.ftl @@ -238,6 +238,7 @@ parse_const_let_mutually_exclusive = `const` and `let` are mutually exclusive parse_invalid_expression_in_let_else = a `{$operator}` expression cannot be directly assigned in `let...else` parse_invalid_curly_in_let_else = right curly brace `{"}"}` before `else` in a `let...else` statement not allowed +parse_extra_if_in_let_else = remove the `if` if you meant to write a `let...else` statement parse_compound_assignment_expression_in_let = can't reassign to an uninitialized variable .suggestion = initialize the variable diff --git a/compiler/rustc_error_messages/locales/en-US/passes.ftl b/compiler/rustc_error_messages/locales/en-US/passes.ftl index 91857dd227d..0c2ab3d08f9 100644 --- a/compiler/rustc_error_messages/locales/en-US/passes.ftl +++ b/compiler/rustc_error_messages/locales/en-US/passes.ftl @@ -710,3 +710,24 @@ passes_ignored_derived_impls = [one] trait {$trait_list}, but this is *[other] traits {$trait_list}, but these are } intentionally ignored during dead code analysis + +passes_proc_macro_typeerror = mismatched {$kind} signature + .label = found {$found}, expected type `proc_macro::TokenStream` + .note = {$kind}s must have a signature of `{$expected_signature}` + +passes_proc_macro_diff_arg_count = mismatched {$kind} signature + .label = found unexpected {$count -> + [one] argument + *[other] arguments + } + .note = {$kind}s must have a signature of `{$expected_signature}` + +passes_proc_macro_missing_args = mismatched {$kind} signature + .label = {$kind} must have {$expected_input_count -> + [one] one argument + *[other] two arguments + } of type `proc_macro::TokenStream` + +passes_proc_macro_invalid_abi = proc macro functions may not be `extern "{$abi}"` + +passes_proc_macro_unsafe = proc macro functions may not be `unsafe` diff --git a/compiler/rustc_expand/src/base.rs b/compiler/rustc_expand/src/base.rs index ffde8480c02..951d5924678 100644 --- a/compiler/rustc_expand/src/base.rs +++ b/compiler/rustc_expand/src/base.rs @@ -63,21 +63,21 @@ pub enum Annotatable { impl Annotatable { pub fn span(&self) -> Span { - match *self { - Annotatable::Item(ref item) => item.span, - Annotatable::TraitItem(ref trait_item) => trait_item.span, - Annotatable::ImplItem(ref impl_item) => impl_item.span, - Annotatable::ForeignItem(ref foreign_item) => foreign_item.span, - Annotatable::Stmt(ref stmt) => stmt.span, - Annotatable::Expr(ref expr) => expr.span, - Annotatable::Arm(ref arm) => arm.span, - Annotatable::ExprField(ref field) => field.span, - Annotatable::PatField(ref fp) => fp.pat.span, - Annotatable::GenericParam(ref gp) => gp.ident.span, - Annotatable::Param(ref p) => p.span, - Annotatable::FieldDef(ref sf) => sf.span, - Annotatable::Variant(ref v) => v.span, - Annotatable::Crate(ref c) => c.spans.inner_span, + match self { + Annotatable::Item(item) => item.span, + Annotatable::TraitItem(trait_item) => trait_item.span, + Annotatable::ImplItem(impl_item) => impl_item.span, + Annotatable::ForeignItem(foreign_item) => foreign_item.span, + Annotatable::Stmt(stmt) => stmt.span, + Annotatable::Expr(expr) => expr.span, + Annotatable::Arm(arm) => arm.span, + Annotatable::ExprField(field) => field.span, + Annotatable::PatField(fp) => fp.pat.span, + Annotatable::GenericParam(gp) => gp.ident.span, + Annotatable::Param(p) => p.span, + Annotatable::FieldDef(sf) => sf.span, + Annotatable::Variant(v) => v.span, + Annotatable::Crate(c) => c.spans.inner_span, } } diff --git a/compiler/rustc_expand/src/config.rs b/compiler/rustc_expand/src/config.rs index f4c6f3386ad..1fcbdfd9be5 100644 --- a/compiler/rustc_expand/src/config.rs +++ b/compiler/rustc_expand/src/config.rs @@ -298,7 +298,7 @@ impl<'a> StripUnconfigured<'a> { Some(AttrTokenTree::Delimited(sp, delim, inner)) .into_iter() } - AttrTokenTree::Token(ref token, _) if let TokenKind::Interpolated(ref nt) = token.kind => { + AttrTokenTree::Token(ref token, _) if let TokenKind::Interpolated(nt) = &token.kind => { panic!( "Nonterminal should have been flattened at {:?}: {:?}", token.span, nt diff --git a/compiler/rustc_expand/src/expand.rs b/compiler/rustc_expand/src/expand.rs index 5d47c1ed363..79d058d9c97 100644 --- a/compiler/rustc_expand/src/expand.rs +++ b/compiler/rustc_expand/src/expand.rs @@ -144,12 +144,12 @@ macro_rules! ast_fragments { } pub fn visit_with<'a, V: Visitor<'a>>(&'a self, visitor: &mut V) { - match *self { - AstFragment::OptExpr(Some(ref expr)) => visitor.visit_expr(expr), + match self { + AstFragment::OptExpr(Some(expr)) => visitor.visit_expr(expr), AstFragment::OptExpr(None) => {} - AstFragment::MethodReceiverExpr(ref expr) => visitor.visit_method_receiver_expr(expr), - $($(AstFragment::$Kind(ref ast) => visitor.$visit_ast(ast),)?)* - $($(AstFragment::$Kind(ref ast) => for ast_elt in &ast[..] { + AstFragment::MethodReceiverExpr(expr) => visitor.visit_method_receiver_expr(expr), + $($(AstFragment::$Kind(ast) => visitor.$visit_ast(ast),)?)* + $($(AstFragment::$Kind(ast) => for ast_elt in &ast[..] { visitor.$visit_ast_elt(ast_elt, $($args)*); })?)* } @@ -592,7 +592,7 @@ impl<'a, 'b> MacroExpander<'a, 'b> { let expn_id = invoc.expansion_data.id; let parent_def = self.cx.resolver.invocation_parent(expn_id); let span = match &mut invoc.kind { - InvocationKind::Bang { ref mut span, .. } => span, + InvocationKind::Bang { span, .. } => span, InvocationKind::Attr { attr, .. } => &mut attr.span, InvocationKind::Derive { path, .. } => &mut path.span, }; @@ -945,8 +945,8 @@ pub fn ensure_complete_parse<'a>( let def_site_span = parser.token.span.with_ctxt(SyntaxContext::root()); let semi_span = parser.sess.source_map().next_point(span); - let add_semicolon = match parser.sess.source_map().span_to_snippet(semi_span) { - Ok(ref snippet) if &snippet[..] != ";" && kind_name == "expression" => { + let add_semicolon = match &parser.sess.source_map().span_to_snippet(semi_span) { + Ok(snippet) if &snippet[..] != ";" && kind_name == "expression" => { Some(span.shrink_to_hi()) } _ => None, diff --git a/compiler/rustc_expand/src/mbe/macro_check.rs b/compiler/rustc_expand/src/mbe/macro_check.rs index 0b8847f827d..5be134f4e66 100644 --- a/compiler/rustc_expand/src/mbe/macro_check.rs +++ b/compiler/rustc_expand/src/mbe/macro_check.rs @@ -151,9 +151,9 @@ impl<'a, T> Iterator for &'a Stack<'a, T> { // Iterates from top to bottom of the stack. fn next(&mut self) -> Option<&'a T> { - match *self { + match self { Stack::Empty => None, - Stack::Push { ref top, ref prev } => { + Stack::Push { top, prev } => { *self = prev; Some(top) } @@ -437,8 +437,8 @@ fn check_nested_occurrences( // We check that the meta-variable is correctly used. check_occurrences(sess, node_id, tt, macros, binders, ops, valid); } - (NestedMacroState::MacroRulesNotName, &TokenTree::Delimited(_, ref del)) - | (NestedMacroState::MacroName, &TokenTree::Delimited(_, ref del)) + (NestedMacroState::MacroRulesNotName, TokenTree::Delimited(_, del)) + | (NestedMacroState::MacroName, TokenTree::Delimited(_, del)) if del.delim == Delimiter::Brace => { let macro_rules = state == NestedMacroState::MacroRulesNotName; @@ -497,7 +497,7 @@ fn check_nested_occurrences( valid, ); } - (_, ref tt) => { + (_, tt) => { state = NestedMacroState::Empty; check_occurrences(sess, node_id, tt, macros, binders, ops, valid); } diff --git a/compiler/rustc_expand/src/mbe/macro_rules.rs b/compiler/rustc_expand/src/mbe/macro_rules.rs index c0489f68633..4ebd75f0185 100644 --- a/compiler/rustc_expand/src/mbe/macro_rules.rs +++ b/compiler/rustc_expand/src/mbe/macro_rules.rs @@ -486,11 +486,11 @@ pub fn compile_declarative_macro( let mut valid = true; // Extract the arguments: - let lhses = match argument_map[&MacroRulesNormalizedIdent::new(lhs_nm)] { - MatchedSeq(ref s) => s + let lhses = match &argument_map[&MacroRulesNormalizedIdent::new(lhs_nm)] { + MatchedSeq(s) => s .iter() .map(|m| { - if let MatchedTokenTree(ref tt) = *m { + if let MatchedTokenTree(tt) = m { let tt = mbe::quoted::parse( TokenStream::new(vec![tt.clone()]), true, @@ -510,11 +510,11 @@ pub fn compile_declarative_macro( _ => sess.parse_sess.span_diagnostic.span_bug(def.span, "wrong-structured lhs"), }; - let rhses = match argument_map[&MacroRulesNormalizedIdent::new(rhs_nm)] { - MatchedSeq(ref s) => s + let rhses = match &argument_map[&MacroRulesNormalizedIdent::new(rhs_nm)] { + MatchedSeq(s) => s .iter() .map(|m| { - if let MatchedTokenTree(ref tt) = *m { + if let MatchedTokenTree(tt) = m { return mbe::quoted::parse( TokenStream::new(vec![tt.clone()]), false, @@ -624,21 +624,21 @@ fn check_lhs_nt_follows(sess: &ParseSess, def: &ast::Item, lhs: &mbe::TokenTree) fn check_lhs_no_empty_seq(sess: &ParseSess, tts: &[mbe::TokenTree]) -> bool { use mbe::TokenTree; for tt in tts { - match *tt { + match tt { TokenTree::Token(..) | TokenTree::MetaVar(..) | TokenTree::MetaVarDecl(..) | TokenTree::MetaVarExpr(..) => (), - TokenTree::Delimited(_, ref del) => { + TokenTree::Delimited(_, del) => { if !check_lhs_no_empty_seq(sess, &del.tts) { return false; } } - TokenTree::Sequence(span, ref seq) => { + TokenTree::Sequence(span, seq) => { if seq.separator.is_none() - && seq.tts.iter().all(|seq_tt| match *seq_tt { + && seq.tts.iter().all(|seq_tt| match seq_tt { TokenTree::MetaVarDecl(_, _, Some(NonterminalKind::Vis)) => true, - TokenTree::Sequence(_, ref sub_seq) => { + TokenTree::Sequence(_, sub_seq) => { sub_seq.kleene.op == mbe::KleeneOp::ZeroOrMore || sub_seq.kleene.op == mbe::KleeneOp::ZeroOrOne } @@ -736,21 +736,21 @@ impl<'tt> FirstSets<'tt> { fn build_recur<'tt>(sets: &mut FirstSets<'tt>, tts: &'tt [TokenTree]) -> TokenSet<'tt> { let mut first = TokenSet::empty(); for tt in tts.iter().rev() { - match *tt { + match tt { TokenTree::Token(..) | TokenTree::MetaVar(..) | TokenTree::MetaVarDecl(..) | TokenTree::MetaVarExpr(..) => { first.replace_with(TtHandle::TtRef(tt)); } - TokenTree::Delimited(span, ref delimited) => { + TokenTree::Delimited(span, delimited) => { build_recur(sets, &delimited.tts); first.replace_with(TtHandle::from_token_kind( token::OpenDelim(delimited.delim), span.open, )); } - TokenTree::Sequence(sp, ref seq_rep) => { + TokenTree::Sequence(sp, seq_rep) => { let subfirst = build_recur(sets, &seq_rep.tts); match sets.first.entry(sp.entire()) { @@ -804,7 +804,7 @@ impl<'tt> FirstSets<'tt> { let mut first = TokenSet::empty(); for tt in tts.iter() { assert!(first.maybe_empty); - match *tt { + match tt { TokenTree::Token(..) | TokenTree::MetaVar(..) | TokenTree::MetaVarDecl(..) @@ -812,14 +812,14 @@ impl<'tt> FirstSets<'tt> { first.add_one(TtHandle::TtRef(tt)); return first; } - TokenTree::Delimited(span, ref delimited) => { + TokenTree::Delimited(span, delimited) => { first.add_one(TtHandle::from_token_kind( token::OpenDelim(delimited.delim), span.open, )); return first; } - TokenTree::Sequence(sp, ref seq_rep) => { + TokenTree::Sequence(sp, seq_rep) => { let subfirst_owned; let subfirst = match self.first.get(&sp.entire()) { Some(Some(subfirst)) => subfirst, @@ -1041,7 +1041,7 @@ fn check_matcher_core<'tt>( // First, update `last` so that it corresponds to the set // of NT tokens that might end the sequence `... token`. - match *token { + match token { TokenTree::Token(..) | TokenTree::MetaVar(..) | TokenTree::MetaVarDecl(..) @@ -1057,7 +1057,7 @@ fn check_matcher_core<'tt>( suffix_first = build_suffix_first(); } } - TokenTree::Delimited(span, ref d) => { + TokenTree::Delimited(span, d) => { let my_suffix = TokenSet::singleton(TtHandle::from_token_kind( token::CloseDelim(d.delim), span.close, @@ -1070,7 +1070,7 @@ fn check_matcher_core<'tt>( // against SUFFIX continue 'each_token; } - TokenTree::Sequence(_, ref seq_rep) => { + TokenTree::Sequence(_, seq_rep) => { suffix_first = build_suffix_first(); // The trick here: when we check the interior, we want // to include the separator (if any) as a potential @@ -1372,8 +1372,8 @@ fn is_in_follow(tok: &mbe::TokenTree, kind: NonterminalKind) -> IsInFollow { } fn quoted_tt_to_string(tt: &mbe::TokenTree) -> String { - match *tt { - mbe::TokenTree::Token(ref token) => pprust::token_to_string(&token).into(), + match tt { + mbe::TokenTree::Token(token) => pprust::token_to_string(&token).into(), mbe::TokenTree::MetaVar(_, name) => format!("${}", name), mbe::TokenTree::MetaVarDecl(_, name, Some(kind)) => format!("${}:{}", name, kind), mbe::TokenTree::MetaVarDecl(_, name, None) => format!("${}:", name), diff --git a/compiler/rustc_expand/src/mbe/transcribe.rs b/compiler/rustc_expand/src/mbe/transcribe.rs index bec6d1a2df7..b79835be73a 100644 --- a/compiler/rustc_expand/src/mbe/transcribe.rs +++ b/compiler/rustc_expand/src/mbe/transcribe.rs @@ -47,8 +47,7 @@ impl<'a> Iterator for Frame<'a> { fn next(&mut self) -> Option<&'a mbe::TokenTree> { match self { - Frame::Delimited { tts, ref mut idx, .. } - | Frame::Sequence { tts, ref mut idx, .. } => { + Frame::Delimited { tts, idx, .. } | Frame::Sequence { tts, idx, .. } => { let res = tts.get(*idx); *idx += 1; res @@ -220,13 +219,13 @@ pub(super) fn transcribe<'a>( let ident = MacroRulesNormalizedIdent::new(original_ident); if let Some(cur_matched) = lookup_cur_matched(ident, interp, &repeats) { match cur_matched { - MatchedTokenTree(ref tt) => { + MatchedTokenTree(tt) => { // `tt`s are emitted into the output stream directly as "raw tokens", // without wrapping them into groups. let token = tt.clone(); result.push(token); } - MatchedNonterminal(ref nt) => { + MatchedNonterminal(nt) => { // Other variables are emitted into the output stream as groups with // `Delimiter::Invisible` to maintain parsing priorities. // `Interpolated` is currently used for such groups in rustc parser. @@ -299,12 +298,11 @@ fn lookup_cur_matched<'a>( interpolations: &'a FxHashMap<MacroRulesNormalizedIdent, NamedMatch>, repeats: &[(usize, usize)], ) -> Option<&'a NamedMatch> { - interpolations.get(&ident).map(|matched| { - let mut matched = matched; + interpolations.get(&ident).map(|mut matched| { for &(idx, _) in repeats { match matched { MatchedTokenTree(_) | MatchedNonterminal(_) => break, - MatchedSeq(ref ads) => matched = ads.get(idx).unwrap(), + MatchedSeq(ads) => matched = ads.get(idx).unwrap(), } } @@ -339,7 +337,7 @@ impl LockstepIterSize { match self { LockstepIterSize::Unconstrained => other, LockstepIterSize::Contradiction(_) => self, - LockstepIterSize::Constraint(l_len, ref l_id) => match other { + LockstepIterSize::Constraint(l_len, l_id) => match other { LockstepIterSize::Unconstrained => self, LockstepIterSize::Contradiction(_) => other, LockstepIterSize::Constraint(r_len, _) if l_len == r_len => self, @@ -378,33 +376,33 @@ fn lockstep_iter_size( repeats: &[(usize, usize)], ) -> LockstepIterSize { use mbe::TokenTree; - match *tree { - TokenTree::Delimited(_, ref delimited) => { + match tree { + TokenTree::Delimited(_, delimited) => { delimited.tts.iter().fold(LockstepIterSize::Unconstrained, |size, tt| { size.with(lockstep_iter_size(tt, interpolations, repeats)) }) } - TokenTree::Sequence(_, ref seq) => { + TokenTree::Sequence(_, seq) => { seq.tts.iter().fold(LockstepIterSize::Unconstrained, |size, tt| { size.with(lockstep_iter_size(tt, interpolations, repeats)) }) } TokenTree::MetaVar(_, name) | TokenTree::MetaVarDecl(_, name, _) => { - let name = MacroRulesNormalizedIdent::new(name); + let name = MacroRulesNormalizedIdent::new(*name); match lookup_cur_matched(name, interpolations, repeats) { Some(matched) => match matched { MatchedTokenTree(_) | MatchedNonterminal(_) => LockstepIterSize::Unconstrained, - MatchedSeq(ref ads) => LockstepIterSize::Constraint(ads.len(), name), + MatchedSeq(ads) => LockstepIterSize::Constraint(ads.len(), name), }, _ => LockstepIterSize::Unconstrained, } } - TokenTree::MetaVarExpr(_, ref expr) => { + TokenTree::MetaVarExpr(_, expr) => { let default_rslt = LockstepIterSize::Unconstrained; let Some(ident) = expr.ident() else { return default_rslt; }; let name = MacroRulesNormalizedIdent::new(ident); match lookup_cur_matched(name, interpolations, repeats) { - Some(MatchedSeq(ref ads)) => { + Some(MatchedSeq(ads)) => { default_rslt.with(LockstepIterSize::Constraint(ads.len(), name)) } _ => default_rslt, @@ -449,7 +447,7 @@ fn count_repetitions<'a>( Some(_) => Err(out_of_bounds_err(cx, declared_lhs_depth, sp.entire(), "count")), } } - MatchedSeq(ref named_matches) => { + MatchedSeq(named_matches) => { let new_declared_lhs_depth = declared_lhs_depth + 1; match depth_opt { None => named_matches @@ -472,7 +470,7 @@ fn count_repetitions<'a>( // before we start counting. `matched` contains the various levels of the // tree as we descend, and its final value is the subtree we are currently at. for &(idx, _) in repeats { - if let MatchedSeq(ref ads) = matched { + if let MatchedSeq(ads) = matched { matched = &ads[idx]; } } diff --git a/compiler/rustc_expand/src/parse/tests.rs b/compiler/rustc_expand/src/parse/tests.rs index e49f112bf20..0726d922c84 100644 --- a/compiler/rustc_expand/src/parse/tests.rs +++ b/compiler/rustc_expand/src/parse/tests.rs @@ -176,9 +176,9 @@ fn get_spans_of_pat_idents(src: &str) -> Vec<Span> { } impl<'a> visit::Visitor<'a> for PatIdentVisitor { fn visit_pat(&mut self, p: &'a ast::Pat) { - match p.kind { - PatKind::Ident(_, ref ident, _) => { - self.spans.push(ident.span.clone()); + match &p.kind { + PatKind::Ident(_, ident, _) => { + self.spans.push(ident.span); } _ => { visit::walk_pat(self, p); @@ -290,10 +290,8 @@ fn ttdelim_span() { ) .unwrap(); - let tts: Vec<_> = match expr.kind { - ast::ExprKind::MacCall(ref mac) => mac.args.tokens.clone().into_trees().collect(), - _ => panic!("not a macro"), - }; + let ast::ExprKind::MacCall(mac) = &expr.kind else { panic!("not a macro") }; + let tts: Vec<_> = mac.args.tokens.clone().into_trees().collect(); let span = tts.iter().rev().next().unwrap().span(); @@ -318,11 +316,8 @@ fn out_of_line_mod() { .unwrap() .unwrap(); - if let ast::ItemKind::Mod(_, ref mod_kind) = item.kind { - assert!(matches!(mod_kind, ast::ModKind::Loaded(items, ..) if items.len() == 2)); - } else { - panic!(); - } + let ast::ItemKind::Mod(_, mod_kind) = &item.kind else { panic!() }; + assert!(matches!(mod_kind, ast::ModKind::Loaded(items, ..) if items.len() == 2)); }); } diff --git a/compiler/rustc_expand/src/proc_macro_server.rs b/compiler/rustc_expand/src/proc_macro_server.rs index af38077b080..341ae18541b 100644 --- a/compiler/rustc_expand/src/proc_macro_server.rs +++ b/compiler/rustc_expand/src/proc_macro_server.rs @@ -597,8 +597,8 @@ impl server::SourceFile for Rustc<'_, '_> { } fn path(&mut self, file: &Self::SourceFile) -> String { - match file.name { - FileName::Real(ref name) => name + match &file.name { + FileName::Real(name) => name .local_path() .expect("attempting to get a file path in an imported file in `proc_macro::SourceFile::path`") .to_str() diff --git a/compiler/rustc_feature/src/lib.rs b/compiler/rustc_feature/src/lib.rs index 8e2a13a6c0a..93d16716346 100644 --- a/compiler/rustc_feature/src/lib.rs +++ b/compiler/rustc_feature/src/lib.rs @@ -83,7 +83,8 @@ impl UnstableFeatures { /// Otherwise, only `RUSTC_BOOTSTRAP=1` will work. pub fn from_environment(krate: Option<&str>) -> Self { // `true` if this is a feature-staged build, i.e., on the beta or stable channel. - let disable_unstable_features = option_env!("CFG_DISABLE_UNSTABLE_FEATURES").is_some(); + let disable_unstable_features = + option_env!("CFG_DISABLE_UNSTABLE_FEATURES").map(|s| s != "0").unwrap_or(false); // Returns whether `krate` should be counted as unstable let is_unstable_crate = |var: &str| { krate.map_or(false, |name| var.split(',').any(|new_krate| new_krate == name)) diff --git a/compiler/rustc_hir/src/hir.rs b/compiler/rustc_hir/src/hir.rs index d6566860f81..b456bd08048 100644 --- a/compiler/rustc_hir/src/hir.rs +++ b/compiler/rustc_hir/src/hir.rs @@ -3524,6 +3524,13 @@ impl<'hir> Node<'hir> { } } + pub fn alias_ty(self) -> Option<&'hir Ty<'hir>> { + match self { + Node::Item(Item { kind: ItemKind::TyAlias(ty, ..), .. }) => Some(ty), + _ => None, + } + } + pub fn body_id(&self) -> Option<BodyId> { match self { Node::TraitItem(TraitItem { diff --git a/compiler/rustc_hir_analysis/src/astconv/mod.rs b/compiler/rustc_hir_analysis/src/astconv/mod.rs index ce72b78f42f..6435b05cef8 100644 --- a/compiler/rustc_hir_analysis/src/astconv/mod.rs +++ b/compiler/rustc_hir_analysis/src/astconv/mod.rs @@ -569,17 +569,17 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o { .bindings .iter() .map(|binding| { - let kind = match binding.kind { - hir::TypeBindingKind::Equality { ref term } => match term { - hir::Term::Ty(ref ty) => { + let kind = match &binding.kind { + hir::TypeBindingKind::Equality { term } => match term { + hir::Term::Ty(ty) => { ConvertedBindingKind::Equality(self.ast_ty_to_ty(ty).into()) } - hir::Term::Const(ref c) => { + hir::Term::Const(c) => { let c = Const::from_anon_const(self.tcx(), c.def_id); ConvertedBindingKind::Equality(c.into()) } }, - hir::TypeBindingKind::Constraint { ref bounds } => { + hir::TypeBindingKind::Constraint { bounds } => { ConvertedBindingKind::Constraint(bounds) } }; @@ -1928,7 +1928,7 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o { ) -> Result<(Ty<'tcx>, DefKind, DefId), ErrorGuaranteed> { let tcx = self.tcx(); let assoc_ident = assoc_segment.ident; - let qself_res = if let hir::TyKind::Path(hir::QPath::Resolved(_, ref path)) = qself.kind { + let qself_res = if let hir::TyKind::Path(hir::QPath::Resolved(_, path)) = &qself.kind { path.res } else { Res::Err @@ -1971,8 +1971,8 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o { return; }; let (qself_sugg_span, is_self) = if let hir::TyKind::Path( - hir::QPath::Resolved(_, ref path) - ) = qself.kind { + hir::QPath::Resolved(_, path) + ) = &qself.kind { // If the path segment already has type params, we want to overwrite // them. match &path.segments[..] { @@ -2760,7 +2760,7 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o { "generic `Self` types are currently not permitted in anonymous constants", ); if let Some(hir::Node::Item(&hir::Item { - kind: hir::ItemKind::Impl(ref impl_), + kind: hir::ItemKind::Impl(impl_), .. })) = tcx.hir().get_if_local(def_id) { @@ -2843,12 +2843,12 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o { fn ast_ty_to_ty_inner(&self, ast_ty: &hir::Ty<'_>, borrowed: bool, in_path: bool) -> Ty<'tcx> { let tcx = self.tcx(); - let result_ty = match ast_ty.kind { - hir::TyKind::Slice(ref ty) => tcx.mk_slice(self.ast_ty_to_ty(ty)), - hir::TyKind::Ptr(ref mt) => { + let result_ty = match &ast_ty.kind { + hir::TyKind::Slice(ty) => tcx.mk_slice(self.ast_ty_to_ty(ty)), + hir::TyKind::Ptr(mt) => { tcx.mk_ptr(ty::TypeAndMut { ty: self.ast_ty_to_ty(mt.ty), mutbl: mt.mutbl }) } - hir::TyKind::Ref(ref region, ref mt) => { + hir::TyKind::Ref(region, mt) => { let r = self.ast_region_to_region(region, None); debug!(?r); let t = self.ast_ty_to_ty_inner(mt.ty, true, false); @@ -2868,7 +2868,7 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o { Some(ast_ty), )) } - hir::TyKind::TraitObject(bounds, ref lifetime, repr) => { + hir::TyKind::TraitObject(bounds, lifetime, repr) => { self.maybe_lint_bare_trait(ast_ty, in_path); let repr = match repr { TraitObjectSyntax::Dyn | TraitObjectSyntax::None => ty::Dyn, @@ -2876,12 +2876,12 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o { }; self.conv_object_ty_poly_trait_ref(ast_ty.span, bounds, lifetime, borrowed, repr) } - hir::TyKind::Path(hir::QPath::Resolved(ref maybe_qself, ref path)) => { + hir::TyKind::Path(hir::QPath::Resolved(maybe_qself, path)) => { debug!(?maybe_qself, ?path); let opt_self_ty = maybe_qself.as_ref().map(|qself| self.ast_ty_to_ty(qself)); self.res_to_ty(opt_self_ty, path, false) } - hir::TyKind::OpaqueDef(item_id, lifetimes, in_trait) => { + &hir::TyKind::OpaqueDef(item_id, lifetimes, in_trait) => { let opaque_ty = tcx.hir().item(item_id); let def_id = item_id.owner_id.to_def_id(); @@ -2892,14 +2892,14 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o { ref i => bug!("`impl Trait` pointed to non-opaque type?? {:#?}", i), } } - hir::TyKind::Path(hir::QPath::TypeRelative(ref qself, ref segment)) => { + hir::TyKind::Path(hir::QPath::TypeRelative(qself, segment)) => { debug!(?qself, ?segment); let ty = self.ast_ty_to_ty_inner(qself, false, true); self.associated_path_to_ty(ast_ty.hir_id, ast_ty.span, ty, qself, segment, false) .map(|(ty, _, _)| ty) .unwrap_or_else(|_| tcx.ty_error()) } - hir::TyKind::Path(hir::QPath::LangItem(lang_item, span, _)) => { + &hir::TyKind::Path(hir::QPath::LangItem(lang_item, span, _)) => { let def_id = tcx.require_lang_item(lang_item, Some(span)); let (substs, _) = self.create_substs_for_ast_path( span, @@ -2913,7 +2913,7 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o { ); EarlyBinder(tcx.at(span).type_of(def_id)).subst(tcx, substs) } - hir::TyKind::Array(ref ty, ref length) => { + hir::TyKind::Array(ty, length) => { let length = match length { &hir::ArrayLen::Infer(_, span) => self.ct_infer(tcx.types.usize, None, span), hir::ArrayLen::Body(constant) => { @@ -2923,7 +2923,7 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o { tcx.mk_ty(ty::Array(self.ast_ty_to_ty(ty), length)) } - hir::TyKind::Typeof(ref e) => { + hir::TyKind::Typeof(e) => { let ty_erased = tcx.type_of(e.def_id); let ty = tcx.fold_regions(ty_erased, |r, _| { if r.is_erased() { tcx.lifetimes.re_static } else { r } diff --git a/compiler/rustc_hir_analysis/src/autoderef.rs b/compiler/rustc_hir_analysis/src/autoderef.rs index 730560cc686..a5c96a8b016 100644 --- a/compiler/rustc_hir_analysis/src/autoderef.rs +++ b/compiler/rustc_hir_analysis/src/autoderef.rs @@ -2,11 +2,11 @@ use crate::errors::AutoDerefReachedRecursionLimit; use crate::traits::query::evaluate_obligation::InferCtxtExt; use crate::traits::NormalizeExt; use crate::traits::{self, TraitEngine, TraitEngineExt}; -use rustc_hir as hir; use rustc_infer::infer::InferCtxt; use rustc_middle::ty::TypeVisitable; use rustc_middle::ty::{self, Ty, TyCtxt}; use rustc_session::Limit; +use rustc_span::def_id::LocalDefId; use rustc_span::def_id::LOCAL_CRATE; use rustc_span::Span; @@ -28,7 +28,7 @@ pub struct Autoderef<'a, 'tcx> { // Meta infos: infcx: &'a InferCtxt<'tcx>, span: Span, - body_id: hir::HirId, + body_id: LocalDefId, param_env: ty::ParamEnv<'tcx>, // Current state: @@ -96,14 +96,14 @@ impl<'a, 'tcx> Autoderef<'a, 'tcx> { pub fn new( infcx: &'a InferCtxt<'tcx>, param_env: ty::ParamEnv<'tcx>, - body_id: hir::HirId, + body_def_id: LocalDefId, span: Span, base_ty: Ty<'tcx>, ) -> Autoderef<'a, 'tcx> { Autoderef { infcx, span, - body_id, + body_id: body_def_id, param_env, state: AutoderefSnapshot { steps: vec![], diff --git a/compiler/rustc_hir_analysis/src/check/check.rs b/compiler/rustc_hir_analysis/src/check/check.rs index d5e4b4cb9e7..6c7482b40c3 100644 --- a/compiler/rustc_hir_analysis/src/check/check.rs +++ b/compiler/rustc_hir_analysis/src/check/check.rs @@ -412,7 +412,6 @@ fn check_opaque_meets_bounds<'tcx>( span: Span, origin: &hir::OpaqueTyOrigin, ) { - let hir_id = tcx.hir().local_def_id_to_hir_id(def_id); let defining_use_anchor = match *origin { hir::OpaqueTyOrigin::FnReturn(did) | hir::OpaqueTyOrigin::AsyncFn(did) => did, hir::OpaqueTyOrigin::TyAlias => def_id, @@ -438,7 +437,7 @@ fn check_opaque_meets_bounds<'tcx>( _ => re, }); - let misc_cause = traits::ObligationCause::misc(span, hir_id); + let misc_cause = traits::ObligationCause::misc(span, def_id); match ocx.eq(&misc_cause, param_env, opaque_ty, hidden_ty) { Ok(()) => {} @@ -531,9 +530,7 @@ fn check_item_type(tcx: TyCtxt<'_>, id: hir::ItemId) { DefKind::Fn => {} // entirely within check_item_body DefKind::Impl => { let it = tcx.hir().item(id); - let hir::ItemKind::Impl(ref impl_) = it.kind else { - return; - }; + let hir::ItemKind::Impl(impl_) = it.kind else { return }; debug!("ItemKind::Impl {} with id {:?}", it.ident, it.owner_id); if let Some(impl_trait_ref) = tcx.impl_trait_ref(it.owner_id) { check_impl_items_against_trait( @@ -548,15 +545,15 @@ fn check_item_type(tcx: TyCtxt<'_>, id: hir::ItemId) { } DefKind::Trait => { let it = tcx.hir().item(id); - let hir::ItemKind::Trait(_, _, _, _, ref items) = it.kind else { + let hir::ItemKind::Trait(_, _, _, _, items) = it.kind else { return; }; check_on_unimplemented(tcx, it); for item in items.iter() { let item = tcx.hir().trait_item(item.id); - match item.kind { - hir::TraitItemKind::Fn(ref sig, _) => { + match &item.kind { + hir::TraitItemKind::Fn(sig, _) => { let abi = sig.header.abi; fn_maybe_err(tcx, item.ident.span, abi); } @@ -652,8 +649,8 @@ fn check_item_type(tcx: TyCtxt<'_>, id: hir::ItemId) { } let item = tcx.hir().foreign_item(item.id); - match item.kind { - hir::ForeignItemKind::Fn(ref fn_decl, _, _) => { + match &item.kind { + hir::ForeignItemKind::Fn(fn_decl, _, _) => { require_c_abi_if_c_variadic(tcx, fn_decl, abi, item.span); } hir::ForeignItemKind::Static(..) => { @@ -1393,11 +1390,15 @@ fn async_opaque_type_cycle_error(tcx: TyCtxt<'_>, span: Span) -> ErrorGuaranteed /// /// If all the return expressions evaluate to `!`, then we explain that the error will go away /// after changing it. This can happen when a user uses `panic!()` or similar as a placeholder. -fn opaque_type_cycle_error(tcx: TyCtxt<'_>, def_id: LocalDefId, span: Span) -> ErrorGuaranteed { +fn opaque_type_cycle_error( + tcx: TyCtxt<'_>, + opaque_def_id: LocalDefId, + span: Span, +) -> ErrorGuaranteed { let mut err = struct_span_err!(tcx.sess, span, E0720, "cannot resolve opaque type"); let mut label = false; - if let Some((def_id, visitor)) = get_owner_return_paths(tcx, def_id) { + if let Some((def_id, visitor)) = get_owner_return_paths(tcx, opaque_def_id) { let typeck_results = tcx.typeck(def_id); if visitor .returns @@ -1433,21 +1434,30 @@ fn opaque_type_cycle_error(tcx: TyCtxt<'_>, def_id: LocalDefId, span: Span) -> E .filter_map(|e| typeck_results.node_type_opt(e.hir_id).map(|t| (e.span, t))) .filter(|(_, ty)| !matches!(ty.kind(), ty::Never)) { - struct OpaqueTypeCollector(Vec<DefId>); + #[derive(Default)] + struct OpaqueTypeCollector { + opaques: Vec<DefId>, + closures: Vec<DefId>, + } impl<'tcx> ty::visit::TypeVisitor<'tcx> for OpaqueTypeCollector { fn visit_ty(&mut self, t: Ty<'tcx>) -> ControlFlow<Self::BreakTy> { match *t.kind() { ty::Alias(ty::Opaque, ty::AliasTy { def_id: def, .. }) => { - self.0.push(def); + self.opaques.push(def); ControlFlow::Continue(()) } + ty::Closure(def_id, ..) | ty::Generator(def_id, ..) => { + self.closures.push(def_id); + t.super_visit_with(self) + } _ => t.super_visit_with(self), } } } - let mut visitor = OpaqueTypeCollector(vec![]); + + let mut visitor = OpaqueTypeCollector::default(); ty.visit_with(&mut visitor); - for def_id in visitor.0 { + for def_id in visitor.opaques { let ty_span = tcx.def_span(def_id); if !seen.contains(&ty_span) { err.span_label(ty_span, &format!("returning this opaque type `{ty}`")); @@ -1455,6 +1465,40 @@ fn opaque_type_cycle_error(tcx: TyCtxt<'_>, def_id: LocalDefId, span: Span) -> E } err.span_label(sp, &format!("returning here with type `{ty}`")); } + + for closure_def_id in visitor.closures { + let Some(closure_local_did) = closure_def_id.as_local() else { continue; }; + let typeck_results = tcx.typeck(closure_local_did); + + let mut label_match = |ty: Ty<'_>, span| { + for arg in ty.walk() { + if let ty::GenericArgKind::Type(ty) = arg.unpack() + && let ty::Alias(ty::Opaque, ty::AliasTy { def_id: captured_def_id, .. }) = *ty.kind() + && captured_def_id == opaque_def_id.to_def_id() + { + err.span_label( + span, + format!( + "{} captures itself here", + tcx.def_kind(closure_def_id).descr(closure_def_id) + ), + ); + } + } + }; + + // Label any closure upvars that capture the opaque + for capture in typeck_results.closure_min_captures_flattened(closure_local_did) + { + label_match(capture.place.ty(), capture.get_path_span(tcx)); + } + // Label any generator locals that capture the opaque + for interior_ty in + typeck_results.generator_interior_types.as_ref().skip_binder() + { + label_match(interior_ty.ty, interior_ty.span); + } + } } } } diff --git a/compiler/rustc_hir_analysis/src/check/compare_impl_item.rs b/compiler/rustc_hir_analysis/src/check/compare_impl_item.rs index 06b69599b58..c09294090d3 100644 --- a/compiler/rustc_hir_analysis/src/check/compare_impl_item.rs +++ b/compiler/rustc_hir_analysis/src/check/compare_impl_item.rs @@ -47,42 +47,22 @@ pub(super) fn compare_impl_method<'tcx>( let impl_m_span = tcx.def_span(impl_m.def_id); - if let Err(_) = compare_self_type(tcx, impl_m, impl_m_span, trait_m, impl_trait_ref) { - return; - } - - if let Err(_) = compare_number_of_generics(tcx, impl_m, trait_m, trait_item_span, false) { - return; - } - - if let Err(_) = compare_generic_param_kinds(tcx, impl_m, trait_m, false) { - return; - } - - if let Err(_) = - compare_number_of_method_arguments(tcx, impl_m, impl_m_span, trait_m, trait_item_span) - { - return; - } - - if let Err(_) = compare_synthetic_generics(tcx, impl_m, trait_m) { - return; - } - - if let Err(_) = compare_asyncness(tcx, impl_m, impl_m_span, trait_m, trait_item_span) { - return; - } - - if let Err(_) = compare_method_predicate_entailment( - tcx, - impl_m, - impl_m_span, - trait_m, - impl_trait_ref, - CheckImpliedWfMode::Check, - ) { - return; - } + let _: Result<_, ErrorGuaranteed> = try { + compare_self_type(tcx, impl_m, impl_m_span, trait_m, impl_trait_ref)?; + compare_number_of_generics(tcx, impl_m, trait_m, trait_item_span, false)?; + compare_generic_param_kinds(tcx, impl_m, trait_m, false)?; + compare_number_of_method_arguments(tcx, impl_m, impl_m_span, trait_m, trait_item_span)?; + compare_synthetic_generics(tcx, impl_m, trait_m)?; + compare_asyncness(tcx, impl_m, impl_m_span, trait_m, trait_item_span)?; + compare_method_predicate_entailment( + tcx, + impl_m, + impl_m_span, + trait_m, + impl_trait_ref, + CheckImpliedWfMode::Check, + )?; + }; } /// This function is best explained by example. Consider a trait: @@ -167,12 +147,12 @@ fn compare_method_predicate_entailment<'tcx>( // // FIXME(@lcnr): remove that after removing `cause.body_id` from // obligations. - let impl_m_hir_id = tcx.hir().local_def_id_to_hir_id(impl_m.def_id.expect_local()); + let impl_m_def_id = impl_m.def_id.expect_local(); let cause = ObligationCause::new( impl_m_span, - impl_m_hir_id, + impl_m_def_id, ObligationCauseCode::CompareImplItemObligation { - impl_item_def_id: impl_m.def_id.expect_local(), + impl_item_def_id: impl_m_def_id, trait_item_def_id: trait_m.def_id, kind: impl_m.kind, }, @@ -218,7 +198,7 @@ fn compare_method_predicate_entailment<'tcx>( // Construct trait parameter environment and then shift it into the placeholder viewpoint. // The key step here is to update the caller_bounds's predicates to be // the new hybrid bounds we computed. - let normalize_cause = traits::ObligationCause::misc(impl_m_span, impl_m_hir_id); + let normalize_cause = traits::ObligationCause::misc(impl_m_span, impl_m_def_id); let param_env = ty::ParamEnv::new( tcx.intern_predicates(&hybrid_preds.predicates), Reveal::UserFacing, @@ -233,14 +213,14 @@ fn compare_method_predicate_entailment<'tcx>( let impl_m_own_bounds = impl_m_predicates.instantiate_own(tcx, impl_to_placeholder_substs); for (predicate, span) in impl_m_own_bounds { - let normalize_cause = traits::ObligationCause::misc(span, impl_m_hir_id); + let normalize_cause = traits::ObligationCause::misc(span, impl_m_def_id); let predicate = ocx.normalize(&normalize_cause, param_env, predicate); let cause = ObligationCause::new( span, - impl_m_hir_id, + impl_m_def_id, ObligationCauseCode::CompareImplItemObligation { - impl_item_def_id: impl_m.def_id.expect_local(), + impl_item_def_id: impl_m_def_id, trait_item_def_id: trait_m.def_id, kind: impl_m.kind, }, @@ -273,7 +253,7 @@ fn compare_method_predicate_entailment<'tcx>( ); let unnormalized_impl_fty = tcx.mk_fn_ptr(ty::Binder::dummy(unnormalized_impl_sig)); - let norm_cause = ObligationCause::misc(impl_m_span, impl_m_hir_id); + let norm_cause = ObligationCause::misc(impl_m_span, impl_m_def_id); let impl_sig = ocx.normalize(&norm_cause, param_env, unnormalized_impl_sig); debug!("compare_impl_method: impl_fty={:?}", impl_sig); @@ -331,6 +311,7 @@ fn compare_method_predicate_entailment<'tcx>( if !errors.is_empty() { match check_implied_wf { CheckImpliedWfMode::Check => { + let impl_m_hir_id = tcx.hir().local_def_id_to_hir_id(impl_m_def_id); return compare_method_predicate_entailment( tcx, impl_m, @@ -356,7 +337,7 @@ fn compare_method_predicate_entailment<'tcx>( let outlives_env = OutlivesEnvironment::with_bounds( param_env, Some(infcx), - infcx.implied_bounds_tys(param_env, impl_m_hir_id, wf_tys.clone()), + infcx.implied_bounds_tys(param_env, impl_m_def_id, wf_tys.clone()), ); infcx.process_registered_region_obligations( outlives_env.region_bound_pairs(), @@ -366,6 +347,7 @@ fn compare_method_predicate_entailment<'tcx>( if !errors.is_empty() { // FIXME(compiler-errors): This can be simplified when IMPLIED_BOUNDS_ENTAILMENT // becomes a hard error (i.e. ideally we'd just call `resolve_regions_and_report_errors` + let impl_m_hir_id = tcx.hir().local_def_id_to_hir_id(impl_m_def_id); match check_implied_wf { CheckImpliedWfMode::Check => { return compare_method_predicate_entailment( @@ -391,7 +373,7 @@ fn compare_method_predicate_entailment<'tcx>( } CheckImpliedWfMode::Skip => { if infcx.tainted_by_errors().is_none() { - infcx.err_ctxt().report_region_errors(impl_m.def_id.expect_local(), &errors); + infcx.err_ctxt().report_region_errors(impl_m_def_id, &errors); } return Err(tcx .sess @@ -630,13 +612,14 @@ pub(super) fn collect_return_position_impl_trait_in_trait_tys<'tcx>( let trait_to_impl_substs = impl_trait_ref.substs; - let impl_m_hir_id = tcx.hir().local_def_id_to_hir_id(impl_m.def_id.expect_local()); + let impl_m_def_id = impl_m.def_id.expect_local(); + let impl_m_hir_id = tcx.hir().local_def_id_to_hir_id(impl_m_def_id); let return_span = tcx.hir().fn_decl_by_hir_id(impl_m_hir_id).unwrap().output.span(); let cause = ObligationCause::new( return_span, - impl_m_hir_id, + impl_m_def_id, ObligationCauseCode::CompareImplItemObligation { - impl_item_def_id: impl_m.def_id.expect_local(), + impl_item_def_id: impl_m_def_id, trait_item_def_id: trait_m.def_id, kind: impl_m.kind, }, @@ -653,7 +636,7 @@ pub(super) fn collect_return_position_impl_trait_in_trait_tys<'tcx>( let ocx = ObligationCtxt::new(infcx); // Normalize the impl signature with fresh variables for lifetime inference. - let norm_cause = ObligationCause::misc(return_span, impl_m_hir_id); + let norm_cause = ObligationCause::misc(return_span, impl_m_def_id); let impl_sig = ocx.normalize( &norm_cause, param_env, @@ -670,7 +653,7 @@ pub(super) fn collect_return_position_impl_trait_in_trait_tys<'tcx>( // the ImplTraitInTraitCollector, which gathers all of the RPITITs and replaces // them with inference variables. // We will use these inference variables to collect the hidden types of RPITITs. - let mut collector = ImplTraitInTraitCollector::new(&ocx, return_span, param_env, impl_m_hir_id); + let mut collector = ImplTraitInTraitCollector::new(&ocx, return_span, param_env, impl_m_def_id); let unnormalized_trait_sig = tcx .liberate_late_bound_regions( impl_m.def_id, @@ -752,12 +735,11 @@ pub(super) fn collect_return_position_impl_trait_in_trait_tys<'tcx>( let outlives_environment = OutlivesEnvironment::with_bounds( param_env, Some(infcx), - infcx.implied_bounds_tys(param_env, impl_m_hir_id, wf_tys), + infcx.implied_bounds_tys(param_env, impl_m_def_id, wf_tys), ); - infcx.err_ctxt().check_region_obligations_and_report_errors( - impl_m.def_id.expect_local(), - &outlives_environment, - )?; + infcx + .err_ctxt() + .check_region_obligations_and_report_errors(impl_m_def_id, &outlives_environment)?; let mut collected_tys = FxHashMap::default(); for (def_id, (ty, substs)) in collector.types { @@ -839,7 +821,7 @@ struct ImplTraitInTraitCollector<'a, 'tcx> { types: FxHashMap<DefId, (Ty<'tcx>, ty::SubstsRef<'tcx>)>, span: Span, param_env: ty::ParamEnv<'tcx>, - body_id: hir::HirId, + body_id: LocalDefId, } impl<'a, 'tcx> ImplTraitInTraitCollector<'a, 'tcx> { @@ -847,7 +829,7 @@ impl<'a, 'tcx> ImplTraitInTraitCollector<'a, 'tcx> { ocx: &'a ObligationCtxt<'a, 'tcx>, span: Span, param_env: ty::ParamEnv<'tcx>, - body_id: hir::HirId, + body_id: LocalDefId, ) -> Self { ImplTraitInTraitCollector { ocx, types: FxHashMap::default(), span, param_env, body_id } } @@ -936,16 +918,14 @@ fn report_trait_method_mismatch<'tcx>( // When the `impl` receiver is an arbitrary self type, like `self: Box<Self>`, the // span points only at the type `Box<Self`>, but we want to cover the whole // argument pattern and type. - let span = match tcx.hir().expect_impl_item(impl_m.def_id.expect_local()).kind { - ImplItemKind::Fn(ref sig, body) => tcx - .hir() - .body_param_names(body) - .zip(sig.decl.inputs.iter()) - .map(|(param, ty)| param.span.to(ty.span)) - .next() - .unwrap_or(impl_err_span), - _ => bug!("{:?} is not a method", impl_m), - }; + let ImplItemKind::Fn(ref sig, body) = tcx.hir().expect_impl_item(impl_m.def_id.expect_local()).kind else { bug!("{impl_m:?} is not a method") }; + let span = tcx + .hir() + .body_param_names(body) + .zip(sig.decl.inputs.iter()) + .map(|(param, ty)| param.span.to(ty.span)) + .next() + .unwrap_or(impl_err_span); diag.span_suggestion( span, @@ -958,22 +938,21 @@ fn report_trait_method_mismatch<'tcx>( if trait_sig.inputs().len() == *i { // Suggestion to change output type. We do not suggest in `async` functions // to avoid complex logic or incorrect output. - match tcx.hir().expect_impl_item(impl_m.def_id.expect_local()).kind { - ImplItemKind::Fn(ref sig, _) if !sig.header.asyncness.is_async() => { - let msg = "change the output type to match the trait"; - let ap = Applicability::MachineApplicable; - match sig.decl.output { - hir::FnRetTy::DefaultReturn(sp) => { - let sugg = format!("-> {} ", trait_sig.output()); - diag.span_suggestion_verbose(sp, msg, sugg, ap); - } - hir::FnRetTy::Return(hir_ty) => { - let sugg = trait_sig.output(); - diag.span_suggestion(hir_ty.span, msg, sugg, ap); - } - }; - } - _ => {} + if let ImplItemKind::Fn(sig, _) = &tcx.hir().expect_impl_item(impl_m.def_id.expect_local()).kind + && !sig.header.asyncness.is_async() + { + let msg = "change the output type to match the trait"; + let ap = Applicability::MachineApplicable; + match sig.decl.output { + hir::FnRetTy::DefaultReturn(sp) => { + let sugg = format!("-> {} ", trait_sig.output()); + diag.span_suggestion_verbose(sp, msg, sugg, ap); + } + hir::FnRetTy::Return(hir_ty) => { + let sugg = trait_sig.output(); + diag.span_suggestion(hir_ty.span, msg, sugg, ap); + } + }; }; } else if let Some(trait_ty) = trait_sig.inputs().get(*i) { diag.span_suggestion( @@ -1100,25 +1079,18 @@ fn extract_spans_for_error_reporting<'tcx>( trait_m: &ty::AssocItem, ) -> (Span, Option<Span>) { let tcx = infcx.tcx; - let mut impl_args = match tcx.hir().expect_impl_item(impl_m.def_id.expect_local()).kind { - ImplItemKind::Fn(ref sig, _) => { - sig.decl.inputs.iter().map(|t| t.span).chain(iter::once(sig.decl.output.span())) - } - _ => bug!("{:?} is not a method", impl_m), + let mut impl_args = { + let ImplItemKind::Fn(sig, _) = &tcx.hir().expect_impl_item(impl_m.def_id.expect_local()).kind else { bug!("{:?} is not a method", impl_m) }; + sig.decl.inputs.iter().map(|t| t.span).chain(iter::once(sig.decl.output.span())) }; - let trait_args = - trait_m.def_id.as_local().map(|def_id| match tcx.hir().expect_trait_item(def_id).kind { - TraitItemKind::Fn(ref sig, _) => { - sig.decl.inputs.iter().map(|t| t.span).chain(iter::once(sig.decl.output.span())) - } - _ => bug!("{:?} is not a TraitItemKind::Fn", trait_m), - }); + + let trait_args = trait_m.def_id.as_local().map(|def_id| { + let TraitItemKind::Fn(sig, _) = &tcx.hir().expect_trait_item(def_id).kind else { bug!("{:?} is not a TraitItemKind::Fn", trait_m) }; + sig.decl.inputs.iter().map(|t| t.span).chain(iter::once(sig.decl.output.span())) + }); match terr { - TypeError::ArgumentMutability(i) => { - (impl_args.nth(i).unwrap(), trait_args.and_then(|mut args| args.nth(i))) - } - TypeError::ArgumentSorts(ExpectedFound { .. }, i) => { + TypeError::ArgumentMutability(i) | TypeError::ArgumentSorts(ExpectedFound { .. }, i) => { (impl_args.nth(i).unwrap(), trait_args.and_then(|mut args| args.nth(i))) } _ => (cause.span(), tcx.hir().span_if_local(trait_m.def_id)), @@ -1178,8 +1150,7 @@ fn compare_self_type<'tcx>( } else { err.note_trait_signature(trait_m.name, trait_m.signature(tcx)); } - let reported = err.emit(); - return Err(reported); + return Err(err.emit()); } (true, false) => { @@ -1198,8 +1169,8 @@ fn compare_self_type<'tcx>( } else { err.note_trait_signature(trait_m.name, trait_m.signature(tcx)); } - let reported = err.emit(); - return Err(reported); + + return Err(err.emit()); } } @@ -1381,41 +1352,39 @@ fn compare_number_of_method_arguments<'tcx>( let trait_m_fty = tcx.fn_sig(trait_m.def_id); let trait_number_args = trait_m_fty.inputs().skip_binder().len(); let impl_number_args = impl_m_fty.inputs().skip_binder().len(); + if trait_number_args != impl_number_args { - let trait_span = if let Some(def_id) = trait_m.def_id.as_local() { - match tcx.hir().expect_trait_item(def_id).kind { - TraitItemKind::Fn(ref trait_m_sig, _) => { - let pos = if trait_number_args > 0 { trait_number_args - 1 } else { 0 }; - if let Some(arg) = trait_m_sig.decl.inputs.get(pos) { - Some(if pos == 0 { - arg.span - } else { - arg.span.with_lo(trait_m_sig.decl.inputs[0].span.lo()) - }) - } else { - trait_item_span - } - } - _ => bug!("{:?} is not a method", impl_m), - } - } else { - trait_item_span - }; - let impl_span = match tcx.hir().expect_impl_item(impl_m.def_id.expect_local()).kind { - ImplItemKind::Fn(ref impl_m_sig, _) => { - let pos = if impl_number_args > 0 { impl_number_args - 1 } else { 0 }; - if let Some(arg) = impl_m_sig.decl.inputs.get(pos) { + let trait_span = trait_m + .def_id + .as_local() + .and_then(|def_id| { + let TraitItemKind::Fn(trait_m_sig, _) = &tcx.hir().expect_trait_item(def_id).kind else { bug!("{:?} is not a method", impl_m) }; + let pos = trait_number_args.saturating_sub(1); + trait_m_sig.decl.inputs.get(pos).map(|arg| { if pos == 0 { arg.span } else { - arg.span.with_lo(impl_m_sig.decl.inputs[0].span.lo()) + arg.span.with_lo(trait_m_sig.decl.inputs[0].span.lo()) } + }) + }) + .or(trait_item_span); + + let ImplItemKind::Fn(impl_m_sig, _) = &tcx.hir().expect_impl_item(impl_m.def_id.expect_local()).kind else { bug!("{:?} is not a method", impl_m) }; + let pos = impl_number_args.saturating_sub(1); + let impl_span = impl_m_sig + .decl + .inputs + .get(pos) + .map(|arg| { + if pos == 0 { + arg.span } else { - impl_m_span + arg.span.with_lo(impl_m_sig.decl.inputs[0].span.lo()) } - } - _ => bug!("{:?} is not a method", impl_m), - }; + }) + .unwrap_or(impl_m_span); + let mut err = struct_span_err!( tcx.sess, impl_span, @@ -1426,6 +1395,7 @@ fn compare_number_of_method_arguments<'tcx>( tcx.def_path_str(trait_m.def_id), trait_number_args ); + if let Some(trait_span) = trait_span { err.span_label( trait_span, @@ -1437,6 +1407,7 @@ fn compare_number_of_method_arguments<'tcx>( } else { err.note_trait_signature(trait_m.name, trait_m.signature(tcx)); } + err.span_label( impl_span, format!( @@ -1445,8 +1416,8 @@ fn compare_number_of_method_arguments<'tcx>( impl_number_args ), ); - let reported = err.emit(); - return Err(reported); + + return Err(err.emit()); } Ok(()) @@ -1493,7 +1464,7 @@ fn compare_synthetic_generics<'tcx>( // explicit generics (true, false) => { err.span_label(impl_span, "expected generic parameter, found `impl Trait`"); - (|| { + let _: Option<_> = try { // try taking the name from the trait impl // FIXME: this is obviously suboptimal since the name can already be used // as another generic argument @@ -1526,26 +1497,23 @@ fn compare_synthetic_generics<'tcx>( ], Applicability::MaybeIncorrect, ); - Some(()) - })(); + }; } // The case where the trait method uses `impl Trait`, but the impl method uses // explicit generics. (false, true) => { err.span_label(impl_span, "expected `impl Trait`, found generic parameter"); - (|| { + let _: Option<_> = try { let impl_m = impl_m.def_id.as_local()?; let impl_m = tcx.hir().expect_impl_item(impl_m); - let input_tys = match impl_m.kind { - hir::ImplItemKind::Fn(ref sig, _) => sig.decl.inputs, - _ => unreachable!(), - }; + let hir::ImplItemKind::Fn(sig, _) = &impl_m.kind else { unreachable!() }; + let input_tys = sig.decl.inputs; + struct Visitor(Option<Span>, hir::def_id::LocalDefId); impl<'v> intravisit::Visitor<'v> for Visitor { fn visit_ty(&mut self, ty: &'v hir::Ty<'v>) { intravisit::walk_ty(self, ty); - if let hir::TyKind::Path(hir::QPath::Resolved(None, ref path)) = - ty.kind + if let hir::TyKind::Path(hir::QPath::Resolved(None, path)) = ty.kind && let Res::Def(DefKind::TyParam, def_id) = path.res && def_id == self.1.to_def_id() { @@ -1553,6 +1521,7 @@ fn compare_synthetic_generics<'tcx>( } } } + let mut visitor = Visitor(None, impl_def_id); for ty in input_tys { intravisit::Visitor::visit_ty(&mut visitor, ty); @@ -1573,13 +1542,11 @@ fn compare_synthetic_generics<'tcx>( ], Applicability::MaybeIncorrect, ); - Some(()) - })(); + }; } _ => unreachable!(), } - let reported = err.emit(); - error_found = Some(reported); + error_found = Some(err.emit()); } } if let Some(reported) = error_found { Err(reported) } else { Ok(()) } @@ -1706,14 +1673,12 @@ pub(super) fn compare_impl_const_raw( // Create a parameter environment that represents the implementation's // method. - let impl_c_hir_id = tcx.hir().local_def_id_to_hir_id(impl_const_item_def); - // Compute placeholder form of impl and trait const tys. let impl_ty = tcx.type_of(impl_const_item_def.to_def_id()); let trait_ty = tcx.bound_type_of(trait_const_item_def).subst(tcx, trait_to_impl_substs); let mut cause = ObligationCause::new( impl_c_span, - impl_c_hir_id, + impl_const_item_def, ObligationCauseCode::CompareImplItemObligation { impl_item_def_id: impl_const_item_def, trait_item_def_id: trait_const_item_def, @@ -1739,10 +1704,8 @@ pub(super) fn compare_impl_const_raw( ); // Locate the Span containing just the type of the offending impl - match tcx.hir().expect_impl_item(impl_const_item_def).kind { - ImplItemKind::Const(ref ty, _) => cause.span = ty.span, - _ => bug!("{:?} is not a impl const", impl_const_item), - } + let ImplItemKind::Const(ty, _) = tcx.hir().expect_impl_item(impl_const_item_def).kind else { bug!("{impl_const_item:?} is not a impl const") }; + cause.span = ty.span; let mut diag = struct_span_err!( tcx.sess, @@ -1754,10 +1717,8 @@ pub(super) fn compare_impl_const_raw( let trait_c_span = trait_const_item_def.as_local().map(|trait_c_def_id| { // Add a label to the Span containing just the type of the const - match tcx.hir().expect_trait_item(trait_c_def_id).kind { - TraitItemKind::Const(ref ty, _) => ty.span, - _ => bug!("{:?} is not a trait const", trait_const_item), - } + let TraitItemKind::Const(ty, _) = tcx.hir().expect_trait_item(trait_c_def_id).kind else { bug!("{trait_const_item:?} is not a trait const") }; + ty.span }); infcx.err_ctxt().note_type_err( @@ -1799,7 +1760,7 @@ pub(super) fn compare_impl_ty<'tcx>( ) { debug!("compare_impl_type(impl_trait_ref={:?})", impl_trait_ref); - let _: Result<(), ErrorGuaranteed> = (|| { + let _: Result<(), ErrorGuaranteed> = try { compare_number_of_generics(tcx, impl_ty, trait_ty, trait_item_span, false)?; compare_generic_param_kinds(tcx, impl_ty, trait_ty, false)?; @@ -1807,8 +1768,8 @@ pub(super) fn compare_impl_ty<'tcx>( let sp = tcx.def_span(impl_ty.def_id); compare_type_predicate_entailment(tcx, impl_ty, sp, trait_ty, impl_trait_ref)?; - check_type_bounds(tcx, trait_ty, impl_ty, impl_ty_span, impl_trait_ref) - })(); + check_type_bounds(tcx, trait_ty, impl_ty, impl_ty_span, impl_trait_ref)?; + }; } /// The equivalent of [compare_method_predicate_entailment], but for associated types @@ -1838,7 +1799,7 @@ fn compare_type_predicate_entailment<'tcx>( // This `HirId` should be used for the `body_id` field on each // `ObligationCause` (and the `FnCtxt`). This is what // `regionck_item` expects. - let impl_ty_hir_id = tcx.hir().local_def_id_to_hir_id(impl_ty.def_id.expect_local()); + let impl_ty_def_id = impl_ty.def_id.expect_local(); debug!("compare_type_predicate_entailment: trait_to_impl_substs={:?}", trait_to_impl_substs); // The predicates declared by the impl definition, the trait and the @@ -1853,7 +1814,7 @@ fn compare_type_predicate_entailment<'tcx>( debug!("compare_type_predicate_entailment: bounds={:?}", hybrid_preds); - let normalize_cause = traits::ObligationCause::misc(impl_ty_span, impl_ty_hir_id); + let normalize_cause = traits::ObligationCause::misc(impl_ty_span, impl_ty_def_id); let param_env = ty::ParamEnv::new( tcx.intern_predicates(&hybrid_preds.predicates), Reveal::UserFacing, @@ -1866,12 +1827,12 @@ fn compare_type_predicate_entailment<'tcx>( debug!("compare_type_predicate_entailment: caller_bounds={:?}", param_env.caller_bounds()); for (predicate, span) in impl_ty_own_bounds { - let cause = ObligationCause::misc(span, impl_ty_hir_id); + let cause = ObligationCause::misc(span, impl_ty_def_id); let predicate = ocx.normalize(&cause, param_env, predicate); let cause = ObligationCause::new( span, - impl_ty_hir_id, + impl_ty_def_id, ObligationCauseCode::CompareImplItemObligation { impl_item_def_id: impl_ty.def_id.expect_local(), trait_item_def_id: trait_ty.def_id, @@ -2047,7 +2008,7 @@ pub(super) fn check_type_bounds<'tcx>( }; debug!(?normalize_param_env); - let impl_ty_hir_id = tcx.hir().local_def_id_to_hir_id(impl_ty.def_id.expect_local()); + let impl_ty_def_id = impl_ty.def_id.expect_local(); let impl_ty_substs = InternalSubsts::identity_for_item(tcx, impl_ty.def_id); let rebased_substs = impl_ty_substs.rebase_onto(tcx, container_id, impl_trait_ref.substs); @@ -2059,7 +2020,7 @@ pub(super) fn check_type_bounds<'tcx>( let normalize_cause = ObligationCause::new( impl_ty_span, - impl_ty_hir_id, + impl_ty_def_id, ObligationCauseCode::CheckAssociatedTypeBounds { impl_item_def_id: impl_ty.def_id.expect_local(), trait_item_def_id: trait_ty.def_id, @@ -2071,7 +2032,7 @@ pub(super) fn check_type_bounds<'tcx>( } else { traits::BindingObligation(trait_ty.def_id, span) }; - ObligationCause::new(impl_ty_span, impl_ty_hir_id, code) + ObligationCause::new(impl_ty_span, impl_ty_def_id, code) }; let obligations = tcx @@ -2102,7 +2063,7 @@ pub(super) fn check_type_bounds<'tcx>( // Finally, resolve all regions. This catches wily misuses of // lifetime parameters. - let implied_bounds = infcx.implied_bounds_tys(param_env, impl_ty_hir_id, assumed_wf_types); + let implied_bounds = infcx.implied_bounds_tys(param_env, impl_ty_def_id, assumed_wf_types); let outlives_environment = OutlivesEnvironment::with_bounds(param_env, Some(&infcx), implied_bounds); diff --git a/compiler/rustc_hir_analysis/src/check/intrinsic.rs b/compiler/rustc_hir_analysis/src/check/intrinsic.rs index 598dc2dca5c..c93ac5ad963 100644 --- a/compiler/rustc_hir_analysis/src/check/intrinsic.rs +++ b/compiler/rustc_hir_analysis/src/check/intrinsic.rs @@ -56,7 +56,8 @@ fn equate_intrinsic_type<'tcx>( && gen_count_ok(own_counts.consts, 0, "const") { let fty = tcx.mk_fn_ptr(sig); - let cause = ObligationCause::new(it.span, it.hir_id(), ObligationCauseCode::IntrinsicType); + let it_def_id = it.owner_id.def_id; + let cause = ObligationCause::new(it.span, it_def_id, ObligationCauseCode::IntrinsicType); require_same_types(tcx, &cause, tcx.mk_fn_ptr(tcx.fn_sig(it.owner_id)), fty); } } diff --git a/compiler/rustc_hir_analysis/src/check/intrinsicck.rs b/compiler/rustc_hir_analysis/src/check/intrinsicck.rs index 17c4d0d482f..82030d82f57 100644 --- a/compiler/rustc_hir_analysis/src/check/intrinsicck.rs +++ b/compiler/rustc_hir_analysis/src/check/intrinsicck.rs @@ -351,7 +351,7 @@ impl<'a, 'tcx> InlineAsmCtxt<'a, 'tcx> { } match *op { - hir::InlineAsmOperand::In { reg, ref expr } => { + hir::InlineAsmOperand::In { reg, expr } => { self.check_asm_operand_type( idx, reg, @@ -362,7 +362,7 @@ impl<'a, 'tcx> InlineAsmCtxt<'a, 'tcx> { &target_features, ); } - hir::InlineAsmOperand::Out { reg, late: _, ref expr } => { + hir::InlineAsmOperand::Out { reg, late: _, expr } => { if let Some(expr) = expr { self.check_asm_operand_type( idx, @@ -375,7 +375,7 @@ impl<'a, 'tcx> InlineAsmCtxt<'a, 'tcx> { ); } } - hir::InlineAsmOperand::InOut { reg, late: _, ref expr } => { + hir::InlineAsmOperand::InOut { reg, late: _, expr } => { self.check_asm_operand_type( idx, reg, @@ -386,7 +386,7 @@ impl<'a, 'tcx> InlineAsmCtxt<'a, 'tcx> { &target_features, ); } - hir::InlineAsmOperand::SplitInOut { reg, late: _, ref in_expr, ref out_expr } => { + hir::InlineAsmOperand::SplitInOut { reg, late: _, in_expr, out_expr } => { let in_ty = self.check_asm_operand_type( idx, reg, diff --git a/compiler/rustc_hir_analysis/src/check/region.rs b/compiler/rustc_hir_analysis/src/check/region.rs index 479a10d6000..b28bfb1d54b 100644 --- a/compiler/rustc_hir_analysis/src/check/region.rs +++ b/compiler/rustc_hir_analysis/src/check/region.rs @@ -180,7 +180,7 @@ fn resolve_arm<'tcx>(visitor: &mut RegionResolutionVisitor<'tcx>, arm: &'tcx hir visitor.terminating_scopes.insert(arm.body.hir_id.local_id); - if let Some(hir::Guard::If(ref expr)) = arm.guard { + if let Some(hir::Guard::If(expr)) = arm.guard { visitor.terminating_scopes.insert(expr.hir_id.local_id); } @@ -242,8 +242,8 @@ fn resolve_expr<'tcx>(visitor: &mut RegionResolutionVisitor<'tcx>, expr: &'tcx h // This ensures fixed size stacks. hir::ExprKind::Binary( source_map::Spanned { node: hir::BinOpKind::And | hir::BinOpKind::Or, .. }, - ref l, - ref r, + l, + r, ) => { // expr is a short circuiting operator (|| or &&). As its // functionality can't be overridden by traits, it always @@ -288,20 +288,20 @@ fn resolve_expr<'tcx>(visitor: &mut RegionResolutionVisitor<'tcx>, expr: &'tcx h terminating(r.hir_id.local_id); } } - hir::ExprKind::If(_, ref then, Some(ref otherwise)) => { + hir::ExprKind::If(_, then, Some(otherwise)) => { terminating(then.hir_id.local_id); terminating(otherwise.hir_id.local_id); } - hir::ExprKind::If(_, ref then, None) => { + hir::ExprKind::If(_, then, None) => { terminating(then.hir_id.local_id); } - hir::ExprKind::Loop(ref body, _, _, _) => { + hir::ExprKind::Loop(body, _, _, _) => { terminating(body.hir_id.local_id); } - hir::ExprKind::DropTemps(ref expr) => { + hir::ExprKind::DropTemps(expr) => { // `DropTemps(expr)` does not denote a conditional scope. // Rather, we want to achieve the same behavior as `{ let _t = expr; _t }`. terminating(expr.hir_id.local_id); @@ -396,7 +396,7 @@ fn resolve_expr<'tcx>(visitor: &mut RegionResolutionVisitor<'tcx>, expr: &'tcx h let body = visitor.tcx.hir().body(body); visitor.visit_body(body); } - hir::ExprKind::AssignOp(_, ref left_expr, ref right_expr) => { + hir::ExprKind::AssignOp(_, left_expr, right_expr) => { debug!( "resolve_expr - enabling pessimistic_yield, was previously {}", prev_pessimistic @@ -447,7 +447,7 @@ fn resolve_expr<'tcx>(visitor: &mut RegionResolutionVisitor<'tcx>, expr: &'tcx h } } - hir::ExprKind::If(ref cond, ref then, Some(ref otherwise)) => { + hir::ExprKind::If(cond, then, Some(otherwise)) => { let expr_cx = visitor.cx; visitor.enter_scope(Scope { id: then.hir_id.local_id, data: ScopeData::IfThen }); visitor.cx.var_parent = visitor.cx.parent; @@ -457,7 +457,7 @@ fn resolve_expr<'tcx>(visitor: &mut RegionResolutionVisitor<'tcx>, expr: &'tcx h visitor.visit_expr(otherwise); } - hir::ExprKind::If(ref cond, ref then, None) => { + hir::ExprKind::If(cond, then, None) => { let expr_cx = visitor.cx; visitor.enter_scope(Scope { id: then.hir_id.local_id, data: ScopeData::IfThen }); visitor.cx.var_parent = visitor.cx.parent; @@ -641,21 +641,21 @@ fn resolve_local<'tcx>( match pat.kind { PatKind::Binding(hir::BindingAnnotation(hir::ByRef::Yes, _), ..) => true, - PatKind::Struct(_, ref field_pats, _) => { + PatKind::Struct(_, field_pats, _) => { field_pats.iter().any(|fp| is_binding_pat(&fp.pat)) } - PatKind::Slice(ref pats1, ref pats2, ref pats3) => { + PatKind::Slice(pats1, pats2, pats3) => { pats1.iter().any(|p| is_binding_pat(&p)) || pats2.iter().any(|p| is_binding_pat(&p)) || pats3.iter().any(|p| is_binding_pat(&p)) } - PatKind::Or(ref subpats) - | PatKind::TupleStruct(_, ref subpats, _) - | PatKind::Tuple(ref subpats, _) => subpats.iter().any(|p| is_binding_pat(&p)), + PatKind::Or(subpats) + | PatKind::TupleStruct(_, subpats, _) + | PatKind::Tuple(subpats, _) => subpats.iter().any(|p| is_binding_pat(&p)), - PatKind::Box(ref subpat) => is_binding_pat(&subpat), + PatKind::Box(subpat) => is_binding_pat(&subpat), PatKind::Ref(_, _) | PatKind::Binding(hir::BindingAnnotation(hir::ByRef::No, _), ..) @@ -704,11 +704,11 @@ fn resolve_local<'tcx>( record_rvalue_scope_if_borrow_expr(visitor, &subexpr, blk_id); } } - hir::ExprKind::Cast(ref subexpr, _) => { + hir::ExprKind::Cast(subexpr, _) => { record_rvalue_scope_if_borrow_expr(visitor, &subexpr, blk_id) } - hir::ExprKind::Block(ref block, _) => { - if let Some(ref subexpr) = block.expr { + hir::ExprKind::Block(block, _) => { + if let Some(subexpr) = block.expr { record_rvalue_scope_if_borrow_expr(visitor, &subexpr, blk_id); } } diff --git a/compiler/rustc_hir_analysis/src/check/wfcheck.rs b/compiler/rustc_hir_analysis/src/check/wfcheck.rs index 8739228e207..cf14da35375 100644 --- a/compiler/rustc_hir_analysis/src/check/wfcheck.rs +++ b/compiler/rustc_hir_analysis/src/check/wfcheck.rs @@ -37,7 +37,7 @@ use std::ops::{ControlFlow, Deref}; pub(super) struct WfCheckingCtxt<'a, 'tcx> { pub(super) ocx: ObligationCtxt<'a, 'tcx>, span: Span, - body_id: hir::HirId, + body_def_id: LocalDefId, param_env: ty::ParamEnv<'tcx>, } impl<'a, 'tcx> Deref for WfCheckingCtxt<'a, 'tcx> { @@ -59,7 +59,7 @@ impl<'tcx> WfCheckingCtxt<'_, 'tcx> { T: TypeFoldable<'tcx>, { self.ocx.normalize( - &ObligationCause::new(span, self.body_id, ObligationCauseCode::WellFormed(loc)), + &ObligationCause::new(span, self.body_def_id, ObligationCauseCode::WellFormed(loc)), self.param_env, value, ) @@ -71,8 +71,11 @@ impl<'tcx> WfCheckingCtxt<'_, 'tcx> { loc: Option<WellFormedLoc>, arg: ty::GenericArg<'tcx>, ) { - let cause = - traits::ObligationCause::new(span, self.body_id, ObligationCauseCode::WellFormed(loc)); + let cause = traits::ObligationCause::new( + span, + self.body_def_id, + ObligationCauseCode::WellFormed(loc), + ); // for a type to be WF, we do not need to check if const trait predicates satisfy. let param_env = self.param_env.without_const(); self.ocx.register_obligation(traits::Obligation::new( @@ -93,11 +96,10 @@ pub(super) fn enter_wf_checking_ctxt<'tcx, F>( F: for<'a> FnOnce(&WfCheckingCtxt<'a, 'tcx>), { let param_env = tcx.param_env(body_def_id); - let body_id = tcx.hir().local_def_id_to_hir_id(body_def_id); let infcx = &tcx.infer_ctxt().build(); let ocx = ObligationCtxt::new(infcx); - let mut wfcx = WfCheckingCtxt { ocx, span, body_id, param_env }; + let mut wfcx = WfCheckingCtxt { ocx, span, body_def_id, param_env }; if !tcx.features().trivial_bounds { wfcx.check_false_global_bounds() @@ -105,7 +107,7 @@ pub(super) fn enter_wf_checking_ctxt<'tcx, F>( f(&mut wfcx); let assumed_wf_types = wfcx.ocx.assumed_wf_types(param_env, span, body_def_id); - let implied_bounds = infcx.implied_bounds_tys(param_env, body_id, assumed_wf_types); + let implied_bounds = infcx.implied_bounds_tys(param_env, body_def_id, assumed_wf_types); let errors = wfcx.select_all_or_error(); if !errors.is_empty() { @@ -178,7 +180,7 @@ fn check_item<'tcx>(tcx: TyCtxt<'tcx>, item: &'tcx hir::Item<'tcx>) { // // won't be allowed unless there's an *explicit* implementation of `Send` // for `T` - hir::ItemKind::Impl(ref impl_) => { + hir::ItemKind::Impl(impl_) => { let is_auto = tcx .impl_trait_ref(def_id) .map_or(false, |trait_ref| tcx.trait_is_auto(trait_ref.skip_binder().def_id)); @@ -224,15 +226,15 @@ fn check_item<'tcx>(tcx: TyCtxt<'tcx>, item: &'tcx hir::Item<'tcx>) { hir::ItemKind::Const(ty, ..) => { check_item_type(tcx, def_id, ty.span, false); } - hir::ItemKind::Struct(_, ref ast_generics) => { + hir::ItemKind::Struct(_, ast_generics) => { check_type_defn(tcx, item, false); check_variances_for_type_defn(tcx, item, ast_generics); } - hir::ItemKind::Union(_, ref ast_generics) => { + hir::ItemKind::Union(_, ast_generics) => { check_type_defn(tcx, item, true); check_variances_for_type_defn(tcx, item, ast_generics); } - hir::ItemKind::Enum(_, ref ast_generics) => { + hir::ItemKind::Enum(_, ast_generics) => { check_type_defn(tcx, item, true); check_variances_for_type_defn(tcx, item, ast_generics); } @@ -374,7 +376,6 @@ fn check_gat_where_clauses(tcx: TyCtxt<'_>, associated_items: &[hir::TraitItemRe continue; } - let item_hir_id = item.id.hir_id(); let param_env = tcx.param_env(item_def_id); let item_required_bounds = match item.kind { @@ -390,7 +391,7 @@ fn check_gat_where_clauses(tcx: TyCtxt<'_>, associated_items: &[hir::TraitItemRe gather_gat_bounds( tcx, param_env, - item_hir_id, + item_def_id.def_id, sig.inputs_and_output, // We also assume that all of the function signature's parameter types // are well formed. @@ -412,7 +413,7 @@ fn check_gat_where_clauses(tcx: TyCtxt<'_>, associated_items: &[hir::TraitItemRe gather_gat_bounds( tcx, param_env, - item_hir_id, + item_def_id.def_id, tcx.explicit_item_bounds(item_def_id).to_vec(), &FxIndexSet::default(), gat_def_id.def_id, @@ -458,7 +459,6 @@ fn check_gat_where_clauses(tcx: TyCtxt<'_>, associated_items: &[hir::TraitItemRe let gat_item_hir = tcx.hir().expect_trait_item(gat_def_id.def_id); debug!(?required_bounds); let param_env = tcx.param_env(gat_def_id); - let gat_hir = gat_item_hir.hir_id(); let mut unsatisfied_bounds: Vec<_> = required_bounds .into_iter() @@ -466,13 +466,25 @@ fn check_gat_where_clauses(tcx: TyCtxt<'_>, associated_items: &[hir::TraitItemRe ty::PredicateKind::Clause(ty::Clause::RegionOutlives(ty::OutlivesPredicate( a, b, - ))) => { - !region_known_to_outlive(tcx, gat_hir, param_env, &FxIndexSet::default(), a, b) - } + ))) => !region_known_to_outlive( + tcx, + gat_def_id.def_id, + param_env, + &FxIndexSet::default(), + a, + b, + ), ty::PredicateKind::Clause(ty::Clause::TypeOutlives(ty::OutlivesPredicate( a, b, - ))) => !ty_known_to_outlive(tcx, gat_hir, param_env, &FxIndexSet::default(), a, b), + ))) => !ty_known_to_outlive( + tcx, + gat_def_id.def_id, + param_env, + &FxIndexSet::default(), + a, + b, + ), _ => bug!("Unexpected PredicateKind"), }) .map(|clause| clause.to_string()) @@ -551,7 +563,7 @@ fn augment_param_env<'tcx>( fn gather_gat_bounds<'tcx, T: TypeFoldable<'tcx>>( tcx: TyCtxt<'tcx>, param_env: ty::ParamEnv<'tcx>, - item_hir: hir::HirId, + item_def_id: LocalDefId, to_check: T, wf_tys: &FxIndexSet<Ty<'tcx>>, gat_def_id: LocalDefId, @@ -584,7 +596,7 @@ fn gather_gat_bounds<'tcx, T: TypeFoldable<'tcx>>( // reflected in a where clause on the GAT itself. for (ty, ty_idx) in &types { // In our example, requires that `Self: 'a` - if ty_known_to_outlive(tcx, item_hir, param_env, &wf_tys, *ty, *region_a) { + if ty_known_to_outlive(tcx, item_def_id, param_env, &wf_tys, *ty, *region_a) { debug!(?ty_idx, ?region_a_idx); debug!("required clause: {ty} must outlive {region_a}"); // Translate into the generic parameters of the GAT. In @@ -622,7 +634,7 @@ fn gather_gat_bounds<'tcx, T: TypeFoldable<'tcx>>( if ty::ReStatic == **region_b || region_a == region_b { continue; } - if region_known_to_outlive(tcx, item_hir, param_env, &wf_tys, *region_a, *region_b) { + if region_known_to_outlive(tcx, item_def_id, param_env, &wf_tys, *region_a, *region_b) { debug!(?region_a_idx, ?region_b_idx); debug!("required clause: {region_a} must outlive {region_b}"); // Translate into the generic parameters of the GAT. @@ -658,7 +670,7 @@ fn gather_gat_bounds<'tcx, T: TypeFoldable<'tcx>>( /// `ty` outlives `region`. fn ty_known_to_outlive<'tcx>( tcx: TyCtxt<'tcx>, - id: hir::HirId, + id: LocalDefId, param_env: ty::ParamEnv<'tcx>, wf_tys: &FxIndexSet<Ty<'tcx>>, ty: Ty<'tcx>, @@ -675,7 +687,7 @@ fn ty_known_to_outlive<'tcx>( /// `region_a` outlives `region_b` fn region_known_to_outlive<'tcx>( tcx: TyCtxt<'tcx>, - id: hir::HirId, + id: LocalDefId, param_env: ty::ParamEnv<'tcx>, wf_tys: &FxIndexSet<Ty<'tcx>>, region_a: ty::Region<'tcx>, @@ -699,7 +711,7 @@ fn region_known_to_outlive<'tcx>( /// to be tested), then resolve region and return errors fn resolve_regions_with_wf_tys<'tcx>( tcx: TyCtxt<'tcx>, - id: hir::HirId, + id: LocalDefId, param_env: ty::ParamEnv<'tcx>, wf_tys: &FxIndexSet<Ty<'tcx>>, add_constraints: impl for<'a> FnOnce(&'a InferCtxt<'tcx>, &'a RegionBoundPairs<'tcx>), @@ -1093,7 +1105,7 @@ fn check_type_defn<'tcx>(tcx: TyCtxt<'tcx>, item: &hir::Item<'tcx>, all_sized: b wfcx.register_bound( traits::ObligationCause::new( hir_ty.span, - wfcx.body_id, + wfcx.body_def_id, traits::FieldSized { adt_kind: match item_adt_kind(&item.kind) { Some(i) => i, @@ -1113,7 +1125,7 @@ fn check_type_defn<'tcx>(tcx: TyCtxt<'tcx>, item: &hir::Item<'tcx>, all_sized: b if let ty::VariantDiscr::Explicit(discr_def_id) = variant.discr { let cause = traits::ObligationCause::new( tcx.def_span(discr_def_id), - wfcx.body_id, + wfcx.body_def_id, traits::MiscObligation, ); wfcx.register_obligation(traits::Obligation::new( @@ -1174,7 +1186,7 @@ fn check_associated_type_bounds(wfcx: &WfCheckingCtxt<'_, '_>, item: &ty::AssocI traits::wf::predicate_obligations( wfcx.infcx, wfcx.param_env, - wfcx.body_id, + wfcx.body_def_id, normalized_bound, bound_span, ) @@ -1214,7 +1226,7 @@ fn check_item_type(tcx: TyCtxt<'_>, item_id: LocalDefId, ty_span: Span, allow_fo wfcx.register_wf_obligation(ty_span, Some(WellFormedLoc::Ty(item_id)), item_ty.into()); if forbid_unsized { wfcx.register_bound( - traits::ObligationCause::new(ty_span, wfcx.body_id, traits::WellFormed(None)), + traits::ObligationCause::new(ty_span, wfcx.body_def_id, traits::WellFormed(None)), wfcx.param_env, item_ty, tcx.require_lang_item(LangItem::Sized, None), @@ -1229,7 +1241,7 @@ fn check_item_type(tcx: TyCtxt<'_>, item_id: LocalDefId, ty_span: Span, allow_fo if should_check_for_sync { wfcx.register_bound( - traits::ObligationCause::new(ty_span, wfcx.body_id, traits::SharedStatic), + traits::ObligationCause::new(ty_span, wfcx.body_def_id, traits::SharedStatic), wfcx.param_env, item_ty, tcx.require_lang_item(LangItem::Sync, Some(ty_span)), @@ -1247,8 +1259,8 @@ fn check_impl<'tcx>( constness: hir::Constness, ) { enter_wf_checking_ctxt(tcx, item.span, item.owner_id.def_id, |wfcx| { - match *ast_trait_ref { - Some(ref ast_trait_ref) => { + match ast_trait_ref { + Some(ast_trait_ref) => { // `#[rustc_reservation_impl]` impls are not real impls and // therefore don't need to be WF (the trait's `Self: Trait` predicate // won't hold). @@ -1269,7 +1281,7 @@ fn check_impl<'tcx>( let mut obligations = traits::wf::trait_obligations( wfcx.infcx, wfcx.param_env, - wfcx.body_id, + wfcx.body_def_id, &trait_pred, ast_trait_ref.path.span, item, @@ -1466,7 +1478,7 @@ fn check_where_clauses<'tcx>(wfcx: &WfCheckingCtxt<'_, 'tcx>, span: Span, def_id let pred = wfcx.normalize(sp, None, pred); let cause = traits::ObligationCause::new( sp, - wfcx.body_id, + wfcx.body_def_id, traits::ItemObligation(def_id.to_def_id()), ); traits::Obligation::new(tcx, cause, wfcx.param_env, pred) @@ -1482,12 +1494,11 @@ fn check_where_clauses<'tcx>(wfcx: &WfCheckingCtxt<'_, 'tcx>, span: Span, def_id traits::wf::predicate_obligations( infcx, wfcx.param_env.without_const(), - wfcx.body_id, + wfcx.body_def_id, p, sp, ) }); - let obligations: Vec<_> = wf_obligations.chain(default_obligations).collect(); wfcx.register_obligations(obligations); } @@ -1549,7 +1560,7 @@ fn check_fn_or_method<'tcx>( // Check that the argument is a tuple if let Some(ty) = inputs.next() { wfcx.register_bound( - ObligationCause::new(span, wfcx.body_id, ObligationCauseCode::RustCall), + ObligationCause::new(span, wfcx.body_def_id, ObligationCauseCode::RustCall), wfcx.param_env, *ty, tcx.require_lang_item(hir::LangItem::Tuple, Some(span)), @@ -1597,7 +1608,7 @@ fn check_return_position_impl_trait_in_trait_bounds<'tcx>( traits::wf::predicate_obligations( wfcx.infcx, wfcx.param_env, - wfcx.body_id, + wfcx.body_def_id, normalized_bound, bound_span, ) @@ -1697,7 +1708,7 @@ fn receiver_is_valid<'tcx>( let infcx = wfcx.infcx; let tcx = wfcx.tcx(); let cause = - ObligationCause::new(span, wfcx.body_id, traits::ObligationCauseCode::MethodReceiver); + ObligationCause::new(span, wfcx.body_def_id, traits::ObligationCauseCode::MethodReceiver); let can_eq_self = |ty| infcx.can_eq(wfcx.param_env, self_ty, ty).is_ok(); @@ -1709,7 +1720,7 @@ fn receiver_is_valid<'tcx>( return true; } - let mut autoderef = Autoderef::new(infcx, wfcx.param_env, wfcx.body_id, span, receiver_ty); + let mut autoderef = Autoderef::new(infcx, wfcx.param_env, wfcx.body_def_id, span, receiver_ty); // The `arbitrary_self_types` feature allows raw pointer receivers like `self: *const Self`. if arbitrary_self_types_enabled { @@ -1894,8 +1905,7 @@ impl<'tcx> WfCheckingCtxt<'_, 'tcx> { let mut span = self.span; let empty_env = ty::ParamEnv::empty(); - let def_id = tcx.hir().local_def_id(self.body_id); - let predicates_with_span = tcx.predicates_of(def_id).predicates.iter().copied(); + let predicates_with_span = tcx.predicates_of(self.body_def_id).predicates.iter().copied(); // Check elaborated bounds. let implied_obligations = traits::elaborate_predicates_with_span(tcx, predicates_with_span); @@ -1910,7 +1920,7 @@ impl<'tcx> WfCheckingCtxt<'_, 'tcx> { // Match the existing behavior. if pred.is_global() && !pred.has_late_bound_vars() { let pred = self.normalize(span, None, pred); - let hir_node = tcx.hir().find(self.body_id); + let hir_node = tcx.hir().find_by_def_id(self.body_def_id); // only use the span of the predicate clause (#90869) @@ -1929,7 +1939,7 @@ impl<'tcx> WfCheckingCtxt<'_, 'tcx> { let obligation = traits::Obligation::new( tcx, - traits::ObligationCause::new(span, self.body_id, traits::TrivialBound), + traits::ObligationCause::new(span, self.body_def_id, traits::TrivialBound), empty_env, pred, ); diff --git a/compiler/rustc_hir_analysis/src/coherence/builtin.rs b/compiler/rustc_hir_analysis/src/coherence/builtin.rs index 4edd9221ab2..76668f7e9ac 100644 --- a/compiler/rustc_hir_analysis/src/coherence/builtin.rs +++ b/compiler/rustc_hir_analysis/src/coherence/builtin.rs @@ -7,13 +7,15 @@ use rustc_hir as hir; use rustc_hir::def_id::{DefId, LocalDefId}; use rustc_hir::lang_items::LangItem; use rustc_hir::ItemKind; -use rustc_infer::infer; use rustc_infer::infer::outlives::env::OutlivesEnvironment; use rustc_infer::infer::TyCtxtInferExt; +use rustc_infer::infer::{self, RegionResolutionError}; use rustc_middle::ty::adjustment::CoerceUnsizedInfo; use rustc_middle::ty::{self, suggest_constraining_type_params, Ty, TyCtxt, TypeVisitable}; use rustc_trait_selection::traits::error_reporting::TypeErrCtxtExt; -use rustc_trait_selection::traits::misc::{can_type_implement_copy, CopyImplementationError}; +use rustc_trait_selection::traits::misc::{ + type_allowed_to_implement_copy, CopyImplementationError, InfringingFieldsReason, +}; use rustc_trait_selection::traits::predicate_for_trait_def; use rustc_trait_selection::traits::{self, ObligationCause}; use std::collections::BTreeMap; @@ -54,19 +56,14 @@ fn visit_implementation_of_drop(tcx: TyCtxt<'_>, impl_did: LocalDefId) { _ => {} } - let sp = match tcx.hir().expect_item(impl_did).kind { - ItemKind::Impl(ref impl_) => impl_.self_ty.span, - _ => bug!("expected Drop impl item"), - }; + let ItemKind::Impl(impl_) = tcx.hir().expect_item(impl_did).kind else { bug!("expected Drop impl item") }; - tcx.sess.emit_err(DropImplOnWrongItem { span: sp }); + tcx.sess.emit_err(DropImplOnWrongItem { span: impl_.self_ty.span }); } fn visit_implementation_of_copy(tcx: TyCtxt<'_>, impl_did: LocalDefId) { debug!("visit_implementation_of_copy: impl_did={:?}", impl_did); - let impl_hir_id = tcx.hir().local_def_id_to_hir_id(impl_did); - let self_type = tcx.type_of(impl_did); debug!("visit_implementation_of_copy: self_type={:?} (bound)", self_type); @@ -81,8 +78,8 @@ fn visit_implementation_of_copy(tcx: TyCtxt<'_>, impl_did: LocalDefId) { _ => bug!("expected Copy impl item"), }; - let cause = traits::ObligationCause::misc(span, impl_hir_id); - match can_type_implement_copy(tcx, param_env, self_type, cause) { + let cause = traits::ObligationCause::misc(span, impl_did); + match type_allowed_to_implement_copy(tcx, param_env, self_type, cause) { Ok(()) => {} Err(CopyImplementationError::InfrigingFields(fields)) => { let mut err = struct_span_err!( @@ -97,50 +94,70 @@ fn visit_implementation_of_copy(tcx: TyCtxt<'_>, impl_did: LocalDefId) { let mut errors: BTreeMap<_, Vec<_>> = Default::default(); let mut bounds = vec![]; - for (field, ty) in fields { + for (field, ty, reason) in fields { let field_span = tcx.def_span(field.did); - let field_ty_span = match tcx.hir().get_if_local(field.did) { - Some(hir::Node::Field(field_def)) => field_def.ty.span, - _ => field_span, - }; err.span_label(field_span, "this field does not implement `Copy`"); - // Spin up a new FulfillmentContext, so we can get the _precise_ reason - // why this field does not implement Copy. This is useful because sometimes - // it is not immediately clear why Copy is not implemented for a field, since - // all we point at is the field itself. - let infcx = tcx.infer_ctxt().ignoring_regions().build(); - for error in traits::fully_solve_bound( - &infcx, - traits::ObligationCause::dummy_with_span(field_ty_span), - param_env, - ty, - tcx.require_lang_item(LangItem::Copy, Some(span)), - ) { - let error_predicate = error.obligation.predicate; - // Only note if it's not the root obligation, otherwise it's trivial and - // should be self-explanatory (i.e. a field literally doesn't implement Copy). - - // FIXME: This error could be more descriptive, especially if the error_predicate - // contains a foreign type or if it's a deeply nested type... - if error_predicate != error.root_obligation.predicate { - errors - .entry((ty.to_string(), error_predicate.to_string())) - .or_default() - .push(error.obligation.cause.span); + + match reason { + InfringingFieldsReason::Fulfill(fulfillment_errors) => { + for error in fulfillment_errors { + let error_predicate = error.obligation.predicate; + // Only note if it's not the root obligation, otherwise it's trivial and + // should be self-explanatory (i.e. a field literally doesn't implement Copy). + + // FIXME: This error could be more descriptive, especially if the error_predicate + // contains a foreign type or if it's a deeply nested type... + if error_predicate != error.root_obligation.predicate { + errors + .entry((ty.to_string(), error_predicate.to_string())) + .or_default() + .push(error.obligation.cause.span); + } + if let ty::PredicateKind::Clause(ty::Clause::Trait( + ty::TraitPredicate { + trait_ref, + polarity: ty::ImplPolarity::Positive, + .. + }, + )) = error_predicate.kind().skip_binder() + { + let ty = trait_ref.self_ty(); + if let ty::Param(_) = ty.kind() { + bounds.push(( + format!("{ty}"), + trait_ref.print_only_trait_path().to_string(), + Some(trait_ref.def_id), + )); + } + } + } } - if let ty::PredicateKind::Clause(ty::Clause::Trait(ty::TraitPredicate { - trait_ref, - polarity: ty::ImplPolarity::Positive, - .. - })) = error_predicate.kind().skip_binder() - { - let ty = trait_ref.self_ty(); - if let ty::Param(_) = ty.kind() { - bounds.push(( - format!("{ty}"), - trait_ref.print_only_trait_path().to_string(), - Some(trait_ref.def_id), - )); + InfringingFieldsReason::Regions(region_errors) => { + for error in region_errors { + let ty = ty.to_string(); + match error { + RegionResolutionError::ConcreteFailure(origin, a, b) => { + let predicate = format!("{b}: {a}"); + errors + .entry((ty.clone(), predicate.clone())) + .or_default() + .push(origin.span()); + if let ty::RegionKind::ReEarlyBound(ebr) = *b && ebr.has_name() { + bounds.push((b.to_string(), a.to_string(), None)); + } + } + RegionResolutionError::GenericBoundFailure(origin, a, b) => { + let predicate = format!("{a}: {b}"); + errors + .entry((ty.clone(), predicate.clone())) + .or_default() + .push(origin.span()); + if let infer::region_constraints::GenericKind::Param(_) = a { + bounds.push((a.to_string(), b.to_string(), None)); + } + } + _ => continue, + } } } } @@ -205,7 +222,7 @@ fn visit_implementation_of_dispatch_from_dyn(tcx: TyCtxt<'_>, impl_did: LocalDef let create_err = |msg: &str| struct_span_err!(tcx.sess, span, E0378, "{}", msg); let infcx = tcx.infer_ctxt().build(); - let cause = ObligationCause::misc(span, impl_hir_id); + let cause = ObligationCause::misc(span, impl_did); use rustc_type_ir::sty::TyKind::*; match (source.kind(), target.kind()) { @@ -367,8 +384,7 @@ pub fn coerce_unsized_info<'tcx>(tcx: TyCtxt<'tcx>, impl_did: DefId) -> CoerceUn debug!("visit_implementation_of_coerce_unsized: {:?} -> {:?} (free)", source, target); let infcx = tcx.infer_ctxt().build(); - let impl_hir_id = tcx.hir().local_def_id_to_hir_id(impl_did); - let cause = ObligationCause::misc(span, impl_hir_id); + let cause = ObligationCause::misc(span, impl_did); let check_mutbl = |mt_a: ty::TypeAndMut<'tcx>, mt_b: ty::TypeAndMut<'tcx>, mk_ptr: &dyn Fn(Ty<'tcx>) -> Ty<'tcx>| { @@ -505,12 +521,11 @@ pub fn coerce_unsized_info<'tcx>(tcx: TyCtxt<'tcx>, impl_did: DefId) -> CoerceUn return err_info; } else if diff_fields.len() > 1 { let item = tcx.hir().expect_item(impl_did); - let span = - if let ItemKind::Impl(hir::Impl { of_trait: Some(ref t), .. }) = item.kind { - t.path.span - } else { - tcx.def_span(impl_did) - }; + let span = if let ItemKind::Impl(hir::Impl { of_trait: Some(t), .. }) = &item.kind { + t.path.span + } else { + tcx.def_span(impl_did) + }; struct_span_err!( tcx.sess, @@ -557,7 +572,7 @@ pub fn coerce_unsized_info<'tcx>(tcx: TyCtxt<'tcx>, impl_did: DefId) -> CoerceUn }; // Register an obligation for `A: Trait<B>`. - let cause = traits::ObligationCause::misc(span, impl_hir_id); + let cause = traits::ObligationCause::misc(span, impl_did); let predicate = predicate_for_trait_def(tcx, param_env, cause, trait_def_id, 0, [source, target]); let errors = traits::fully_solve_obligation(&infcx, predicate); diff --git a/compiler/rustc_hir_analysis/src/coherence/inherent_impls.rs b/compiler/rustc_hir_analysis/src/coherence/inherent_impls.rs index 6469f389bf9..dfb98240943 100644 --- a/compiler/rustc_hir_analysis/src/coherence/inherent_impls.rs +++ b/compiler/rustc_hir_analysis/src/coherence/inherent_impls.rs @@ -182,7 +182,7 @@ impl<'tcx> InherentCollect<'tcx> { } let item = self.tcx.hir().item(id); - let hir::ItemKind::Impl(hir::Impl { of_trait: None, self_ty: ty, ref items, .. }) = item.kind else { + let hir::ItemKind::Impl(hir::Impl { of_trait: None, self_ty: ty, items, .. }) = item.kind else { return; }; diff --git a/compiler/rustc_hir_analysis/src/coherence/orphan.rs b/compiler/rustc_hir_analysis/src/coherence/orphan.rs index 0d070f3d118..95b03eb8263 100644 --- a/compiler/rustc_hir_analysis/src/coherence/orphan.rs +++ b/compiler/rustc_hir_analysis/src/coherence/orphan.rs @@ -40,7 +40,7 @@ fn do_orphan_check_impl<'tcx>( let trait_def_id = trait_ref.def_id; let item = tcx.hir().expect_item(def_id); - let hir::ItemKind::Impl(ref impl_) = item.kind else { + let hir::ItemKind::Impl(impl_) = item.kind else { bug!("{:?} is not an impl: {:?}", def_id, item); }; let sp = tcx.def_span(def_id); diff --git a/compiler/rustc_hir_analysis/src/coherence/unsafety.rs b/compiler/rustc_hir_analysis/src/coherence/unsafety.rs index a485768e37b..fe6119dce87 100644 --- a/compiler/rustc_hir_analysis/src/coherence/unsafety.rs +++ b/compiler/rustc_hir_analysis/src/coherence/unsafety.rs @@ -11,7 +11,7 @@ use rustc_span::def_id::LocalDefId; pub(super) fn check_item(tcx: TyCtxt<'_>, def_id: LocalDefId) { debug_assert!(matches!(tcx.def_kind(def_id), DefKind::Impl)); let item = tcx.hir().expect_item(def_id); - let hir::ItemKind::Impl(ref impl_) = item.kind else { bug!() }; + let hir::ItemKind::Impl(impl_) = item.kind else { bug!() }; if let Some(trait_ref) = tcx.impl_trait_ref(item.owner_id) { let trait_ref = trait_ref.subst_identity(); diff --git a/compiler/rustc_hir_analysis/src/collect.rs b/compiler/rustc_hir_analysis/src/collect.rs index 9be37dbe8c6..e253459ef64 100644 --- a/compiler/rustc_hir_analysis/src/collect.rs +++ b/compiler/rustc_hir_analysis/src/collect.rs @@ -561,7 +561,7 @@ fn convert_item(tcx: TyCtxt<'_>, item_id: hir::ItemId) { debug!("convert: item {} with id {}", it.ident, it.hir_id()); let def_id = item_id.owner_id.def_id; - match it.kind { + match &it.kind { // These don't define types. hir::ItemKind::ExternCrate(_) | hir::ItemKind::Use(..) @@ -569,7 +569,7 @@ fn convert_item(tcx: TyCtxt<'_>, item_id: hir::ItemId) { | hir::ItemKind::Mod(_) | hir::ItemKind::GlobalAsm(_) => {} hir::ItemKind::ForeignMod { items, .. } => { - for item in items { + for item in *items { let item = tcx.hir().foreign_item(item.id); tcx.ensure().generics_of(item.owner_id); tcx.ensure().type_of(item.owner_id); @@ -619,7 +619,7 @@ fn convert_item(tcx: TyCtxt<'_>, item_id: hir::ItemId) { tcx.at(it.span).super_predicates_of(def_id); tcx.ensure().predicates_of(def_id); } - hir::ItemKind::Struct(ref struct_def, _) | hir::ItemKind::Union(ref struct_def, _) => { + hir::ItemKind::Struct(struct_def, _) | hir::ItemKind::Union(struct_def, _) => { tcx.ensure().generics_of(def_id); tcx.ensure().type_of(def_id); tcx.ensure().predicates_of(def_id); @@ -854,14 +854,14 @@ fn adt_def(tcx: TyCtxt<'_>, def_id: DefId) -> ty::AdtDef<'_> { }; let repr = tcx.repr_options_of_def(def_id.to_def_id()); - let (kind, variants) = match item.kind { - ItemKind::Enum(ref def, _) => { + let (kind, variants) = match &item.kind { + ItemKind::Enum(def, _) => { let mut distance_from_explicit = 0; let variants = def .variants .iter() .map(|v| { - let discr = if let Some(ref e) = v.disr_expr { + let discr = if let Some(e) = &v.disr_expr { distance_from_explicit = 0; ty::VariantDiscr::Explicit(e.def_id.to_def_id()) } else { @@ -883,7 +883,7 @@ fn adt_def(tcx: TyCtxt<'_>, def_id: DefId) -> ty::AdtDef<'_> { (AdtKind::Enum, variants) } - ItemKind::Struct(ref def, _) | ItemKind::Union(ref def, _) => { + ItemKind::Struct(def, _) | ItemKind::Union(def, _) => { let adt_kind = match item.kind { ItemKind::Struct(..) => AdtKind::Struct, _ => AdtKind::Union, @@ -1248,11 +1248,12 @@ fn infer_return_ty_for_fn_sig<'tcx>( } } +// FIXME(vincenzopalazzo): remove the hir item when the refactoring is stable fn suggest_impl_trait<'tcx>( tcx: TyCtxt<'tcx>, ret_ty: Ty<'tcx>, span: Span, - hir_id: hir::HirId, + _hir_id: hir::HirId, def_id: LocalDefId, ) -> Option<String> { let format_as_assoc: fn(_, _, _, _, _) -> _ = @@ -1324,7 +1325,7 @@ fn suggest_impl_trait<'tcx>( } let ocx = ObligationCtxt::new_in_snapshot(&infcx); let item_ty = ocx.normalize( - &ObligationCause::misc(span, hir_id), + &ObligationCause::misc(span, def_id), param_env, tcx.mk_projection(assoc_item_def_id, substs), ); @@ -1343,21 +1344,19 @@ fn suggest_impl_trait<'tcx>( fn impl_trait_ref(tcx: TyCtxt<'_>, def_id: DefId) -> Option<ty::EarlyBinder<ty::TraitRef<'_>>> { let icx = ItemCtxt::new(tcx, def_id); let item = tcx.hir().expect_item(def_id.expect_local()); - match item.kind { - hir::ItemKind::Impl(ref impl_) => impl_ - .of_trait - .as_ref() - .map(|ast_trait_ref| { - let selfty = tcx.type_of(def_id); - icx.astconv().instantiate_mono_trait_ref( - ast_trait_ref, - selfty, - check_impl_constness(tcx, impl_.constness, ast_trait_ref), - ) - }) - .map(ty::EarlyBinder), - _ => bug!(), - } + let hir::ItemKind::Impl(impl_) = item.kind else { bug!() }; + impl_ + .of_trait + .as_ref() + .map(|ast_trait_ref| { + let selfty = tcx.type_of(def_id); + icx.astconv().instantiate_mono_trait_ref( + ast_trait_ref, + selfty, + check_impl_constness(tcx, impl_.constness, ast_trait_ref), + ) + }) + .map(ty::EarlyBinder) } fn check_impl_constness( @@ -1512,7 +1511,7 @@ fn compute_sig_of_foreign_fn_decl<'tcx>( for (input, ty) in iter::zip(decl.inputs, fty.inputs().skip_binder()) { check(input, *ty) } - if let hir::FnRetTy::Return(ref ty) = decl.output { + if let hir::FnRetTy::Return(ty) = decl.output { check(ty, fty.output().skip_binder()) } } diff --git a/compiler/rustc_hir_analysis/src/collect/generics_of.rs b/compiler/rustc_hir_analysis/src/collect/generics_of.rs index 9a5f447c260..014ee9fcc20 100644 --- a/compiler/rustc_hir_analysis/src/collect/generics_of.rs +++ b/compiler/rustc_hir_analysis/src/collect/generics_of.rs @@ -110,12 +110,12 @@ pub(super) fn generics_of(tcx: TyCtxt<'_>, def_id: DefId) -> ty::Generics { // expressions' count (i.e. `N` in `[x; N]`), and explicit // `enum` discriminants (i.e. `D` in `enum Foo { Bar = D }`), // as they shouldn't be able to cause query cycle errors. - Node::Expr(&Expr { kind: ExprKind::Repeat(_, ref constant), .. }) + Node::Expr(Expr { kind: ExprKind::Repeat(_, constant), .. }) if constant.hir_id() == hir_id => { Some(parent_def_id.to_def_id()) } - Node::Variant(Variant { disr_expr: Some(ref constant), .. }) + Node::Variant(Variant { disr_expr: Some(constant), .. }) if constant.hir_id == hir_id => { Some(parent_def_id.to_def_id()) @@ -259,7 +259,7 @@ pub(super) fn generics_of(tcx: TyCtxt<'_>, def_id: DefId) -> ty::Generics { params.extend(ast_generics.params.iter().filter_map(|param| match param.kind { GenericParamKind::Lifetime { .. } => None, - GenericParamKind::Type { ref default, synthetic, .. } => { + GenericParamKind::Type { default, synthetic, .. } => { if default.is_some() { match allow_defaults { Defaults::Allowed => {} @@ -426,26 +426,22 @@ fn has_late_bound_regions<'tcx>(tcx: TyCtxt<'tcx>, node: Node<'tcx>) -> Option<S } match node { - Node::TraitItem(item) => match item.kind { - hir::TraitItemKind::Fn(ref sig, _) => { - has_late_bound_regions(tcx, &item.generics, sig.decl) - } + Node::TraitItem(item) => match &item.kind { + hir::TraitItemKind::Fn(sig, _) => has_late_bound_regions(tcx, &item.generics, sig.decl), _ => None, }, - Node::ImplItem(item) => match item.kind { - hir::ImplItemKind::Fn(ref sig, _) => { - has_late_bound_regions(tcx, &item.generics, sig.decl) - } + Node::ImplItem(item) => match &item.kind { + hir::ImplItemKind::Fn(sig, _) => has_late_bound_regions(tcx, &item.generics, sig.decl), _ => None, }, Node::ForeignItem(item) => match item.kind { - hir::ForeignItemKind::Fn(fn_decl, _, ref generics) => { + hir::ForeignItemKind::Fn(fn_decl, _, generics) => { has_late_bound_regions(tcx, generics, fn_decl) } _ => None, }, - Node::Item(item) => match item.kind { - hir::ItemKind::Fn(ref sig, .., ref generics, _) => { + Node::Item(item) => match &item.kind { + hir::ItemKind::Fn(sig, .., generics, _) => { has_late_bound_regions(tcx, generics, sig.decl) } _ => None, diff --git a/compiler/rustc_hir_analysis/src/collect/lifetimes.rs b/compiler/rustc_hir_analysis/src/collect/lifetimes.rs index 9435022ddf0..359122d4e16 100644 --- a/compiler/rustc_hir_analysis/src/collect/lifetimes.rs +++ b/compiler/rustc_hir_analysis/src/collect/lifetimes.rs @@ -428,7 +428,7 @@ impl<'a, 'tcx> Visitor<'tcx> for LifetimeContext<'a, 'tcx> { _ => {} } match item.kind { - hir::ItemKind::Fn(_, ref generics, _) => { + hir::ItemKind::Fn(_, generics, _) => { self.visit_early_late(item.hir_id(), generics, |this| { intravisit::walk_item(this, item); }); @@ -508,13 +508,13 @@ impl<'a, 'tcx> Visitor<'tcx> for LifetimeContext<'a, 'tcx> { this.with(scope, |this| intravisit::walk_item(this, item)) }); } - hir::ItemKind::TyAlias(_, ref generics) - | hir::ItemKind::Enum(_, ref generics) - | hir::ItemKind::Struct(_, ref generics) - | hir::ItemKind::Union(_, ref generics) - | hir::ItemKind::Trait(_, _, ref generics, ..) - | hir::ItemKind::TraitAlias(ref generics, ..) - | hir::ItemKind::Impl(hir::Impl { ref generics, .. }) => { + hir::ItemKind::TyAlias(_, generics) + | hir::ItemKind::Enum(_, generics) + | hir::ItemKind::Struct(_, generics) + | hir::ItemKind::Union(_, generics) + | hir::ItemKind::Trait(_, _, generics, ..) + | hir::ItemKind::TraitAlias(generics, ..) + | hir::ItemKind::Impl(&hir::Impl { generics, .. }) => { // These kinds of items have only early-bound lifetime parameters. let lifetimes = generics .params @@ -544,7 +544,7 @@ impl<'a, 'tcx> Visitor<'tcx> for LifetimeContext<'a, 'tcx> { fn visit_foreign_item(&mut self, item: &'tcx hir::ForeignItem<'tcx>) { match item.kind { - hir::ForeignItemKind::Fn(_, _, ref generics) => { + hir::ForeignItemKind::Fn(_, _, generics) => { self.visit_early_late(item.hir_id(), generics, |this| { intravisit::walk_foreign_item(this, item); }) @@ -561,7 +561,7 @@ impl<'a, 'tcx> Visitor<'tcx> for LifetimeContext<'a, 'tcx> { #[instrument(level = "debug", skip(self))] fn visit_ty(&mut self, ty: &'tcx hir::Ty<'tcx>) { match ty.kind { - hir::TyKind::BareFn(ref c) => { + hir::TyKind::BareFn(c) => { let (lifetimes, binders): (FxIndexMap<LocalDefId, Region>, Vec<_>) = c .generic_params .iter() @@ -587,7 +587,7 @@ impl<'a, 'tcx> Visitor<'tcx> for LifetimeContext<'a, 'tcx> { intravisit::walk_ty(this, ty); }); } - hir::TyKind::TraitObject(bounds, ref lifetime, _) => { + hir::TyKind::TraitObject(bounds, lifetime, _) => { debug!(?bounds, ?lifetime, "TraitObject"); let scope = Scope::TraitRefBoundary { s: self.scope }; self.with(scope, |this| { @@ -617,7 +617,7 @@ impl<'a, 'tcx> Visitor<'tcx> for LifetimeContext<'a, 'tcx> { LifetimeName::Error => {} } } - hir::TyKind::Ref(ref lifetime_ref, ref mt) => { + hir::TyKind::Ref(lifetime_ref, ref mt) => { self.visit_lifetime(lifetime_ref); let scope = Scope::ObjectLifetimeDefault { lifetime: self.map.defs.get(&lifetime_ref.hir_id).cloned(), @@ -632,7 +632,7 @@ impl<'a, 'tcx> Visitor<'tcx> for LifetimeContext<'a, 'tcx> { // ^ ^ this gets resolved in the scope of // the opaque_ty generics let opaque_ty = self.tcx.hir().item(item_id); - match opaque_ty.kind { + match &opaque_ty.kind { hir::ItemKind::OpaqueTy(hir::OpaqueTy { origin: hir::OpaqueTyOrigin::TyAlias, .. @@ -655,7 +655,7 @@ impl<'a, 'tcx> Visitor<'tcx> for LifetimeContext<'a, 'tcx> { origin: hir::OpaqueTyOrigin::FnReturn(..) | hir::OpaqueTyOrigin::AsyncFn(..), .. }) => {} - ref i => bug!("`impl Trait` pointed to non-opaque type?? {:#?}", i), + i => bug!("`impl Trait` pointed to non-opaque type?? {:#?}", i), }; // Resolve the lifetimes that are applied to the opaque type. @@ -720,7 +720,7 @@ impl<'a, 'tcx> Visitor<'tcx> for LifetimeContext<'a, 'tcx> { intravisit::walk_trait_item(this, trait_item) }); } - Type(bounds, ref ty) => { + Type(bounds, ty) => { let generics = &trait_item.generics; let lifetimes = generics .params @@ -766,7 +766,7 @@ impl<'a, 'tcx> Visitor<'tcx> for LifetimeContext<'a, 'tcx> { Fn(..) => self.visit_early_late(impl_item.hir_id(), &impl_item.generics, |this| { intravisit::walk_impl_item(this, impl_item) }), - Type(ref ty) => { + Type(ty) => { let generics = &impl_item.generics; let lifetimes: FxIndexMap<LocalDefId, Region> = generics .params @@ -817,7 +817,7 @@ impl<'a, 'tcx> Visitor<'tcx> for LifetimeContext<'a, 'tcx> { fn visit_path(&mut self, path: &hir::Path<'tcx>, _: hir::HirId) { for (i, segment) in path.segments.iter().enumerate() { let depth = path.segments.len() - i - 1; - if let Some(ref args) = segment.args { + if let Some(args) = segment.args { self.visit_segment_args(path.res, depth, args); } } @@ -833,7 +833,7 @@ impl<'a, 'tcx> Visitor<'tcx> for LifetimeContext<'a, 'tcx> { ) { let output = match fd.output { hir::FnRetTy::DefaultReturn(_) => None, - hir::FnRetTy::Return(ref ty) => Some(&**ty), + hir::FnRetTy::Return(ty) => Some(ty), }; self.visit_fn_like_elision(&fd.inputs, output, matches!(fk, intravisit::FnKind::Closure)); intravisit::walk_fn_kind(self, fk); @@ -846,13 +846,13 @@ impl<'a, 'tcx> Visitor<'tcx> for LifetimeContext<'a, 'tcx> { for param in generics.params { match param.kind { GenericParamKind::Lifetime { .. } => {} - GenericParamKind::Type { ref default, .. } => { - if let Some(ref ty) = default { - this.visit_ty(&ty); + GenericParamKind::Type { default, .. } => { + if let Some(ty) = default { + this.visit_ty(ty); } } - GenericParamKind::Const { ref ty, default } => { - this.visit_ty(&ty); + GenericParamKind::Const { ty, default } => { + this.visit_ty(ty); if let Some(default) = default { this.visit_body(this.tcx.hir().body(default.body)); } @@ -863,9 +863,9 @@ impl<'a, 'tcx> Visitor<'tcx> for LifetimeContext<'a, 'tcx> { match predicate { &hir::WherePredicate::BoundPredicate(hir::WhereBoundPredicate { hir_id, - ref bounded_ty, + bounded_ty, bounds, - ref bound_generic_params, + bound_generic_params, origin, .. }) => { @@ -905,7 +905,7 @@ impl<'a, 'tcx> Visitor<'tcx> for LifetimeContext<'a, 'tcx> { }) } &hir::WherePredicate::RegionPredicate(hir::WhereRegionPredicate { - ref lifetime, + lifetime, bounds, .. }) => { @@ -914,7 +914,7 @@ impl<'a, 'tcx> Visitor<'tcx> for LifetimeContext<'a, 'tcx> { if lifetime.res != hir::LifetimeName::Static { for bound in bounds { - let hir::GenericBound::Outlives(ref lt) = bound else { + let hir::GenericBound::Outlives(lt) = bound else { continue; }; if lt.res != hir::LifetimeName::Static { @@ -939,8 +939,8 @@ impl<'a, 'tcx> Visitor<'tcx> for LifetimeContext<'a, 'tcx> { } } &hir::WherePredicate::EqPredicate(hir::WhereEqPredicate { - ref lhs_ty, - ref rhs_ty, + lhs_ty, + rhs_ty, .. }) => { this.visit_ty(lhs_ty); @@ -1042,7 +1042,7 @@ fn object_lifetime_default(tcx: TyCtxt<'_>, param_def_id: DefId) -> ObjectLifeti } for bound in bound.bounds { - if let hir::GenericBound::Outlives(ref lifetime) = *bound { + if let hir::GenericBound::Outlives(lifetime) = bound { set.insert(lifetime.res); } } @@ -1828,7 +1828,7 @@ fn is_late_bound_map(tcx: TyCtxt<'_>, def_id: LocalDefId) -> Option<&FxIndexSet< } } - hir::TyKind::Path(hir::QPath::Resolved(None, ref path)) => { + hir::TyKind::Path(hir::QPath::Resolved(None, path)) => { // consider only the lifetimes on the final // segment; I am not sure it's even currently // valid to have them elsewhere, but even if it diff --git a/compiler/rustc_hir_analysis/src/collect/predicates_of.rs b/compiler/rustc_hir_analysis/src/collect/predicates_of.rs index 62ad0a6c0fc..46b277d9803 100644 --- a/compiler/rustc_hir_analysis/src/collect/predicates_of.rs +++ b/compiler/rustc_hir_analysis/src/collect/predicates_of.rs @@ -85,30 +85,30 @@ fn gather_explicit_predicates_of(tcx: TyCtxt<'_>, def_id: DefId) -> ty::GenericP Node::ImplItem(item) => item.generics, Node::Item(item) => match item.kind { - ItemKind::Impl(ref impl_) => { + ItemKind::Impl(impl_) => { if impl_.defaultness.is_default() { is_default_impl_trait = tcx.impl_trait_ref(def_id).map(|t| ty::Binder::dummy(t.subst_identity())); } - &impl_.generics + impl_.generics } - ItemKind::Fn(.., ref generics, _) - | ItemKind::TyAlias(_, ref generics) - | ItemKind::Enum(_, ref generics) - | ItemKind::Struct(_, ref generics) - | ItemKind::Union(_, ref generics) => *generics, + ItemKind::Fn(.., generics, _) + | ItemKind::TyAlias(_, generics) + | ItemKind::Enum(_, generics) + | ItemKind::Struct(_, generics) + | ItemKind::Union(_, generics) => generics, - ItemKind::Trait(_, _, ref generics, ..) | ItemKind::TraitAlias(ref generics, _) => { + ItemKind::Trait(_, _, generics, ..) | ItemKind::TraitAlias(generics, _) => { is_trait = Some(ty::TraitRef::identity(tcx, def_id)); - *generics + generics } - ItemKind::OpaqueTy(OpaqueTy { ref generics, .. }) => generics, + ItemKind::OpaqueTy(OpaqueTy { generics, .. }) => generics, _ => NO_GENERICS, }, Node::ForeignItem(item) => match item.kind { ForeignItemKind::Static(..) => NO_GENERICS, - ForeignItemKind::Fn(_, _, ref generics) => *generics, + ForeignItemKind::Fn(_, _, generics) => generics, ForeignItemKind::Type => NO_GENERICS, }, @@ -350,7 +350,7 @@ fn const_evaluatable_predicates_of( let node = tcx.hir().get(hir_id); let mut collector = ConstCollector { tcx, preds: FxIndexSet::default() }; - if let hir::Node::Item(item) = node && let hir::ItemKind::Impl(ref impl_) = item.kind { + if let hir::Node::Item(item) = node && let hir::ItemKind::Impl(impl_) = item.kind { if let Some(of_trait) = &impl_.of_trait { debug!("const_evaluatable_predicates_of({:?}): visit impl trait_ref", def_id); collector.visit_trait_ref(of_trait); @@ -511,8 +511,8 @@ pub(super) fn super_predicates_that_define_assoc_type( }; let (generics, bounds) = match item.kind { - hir::ItemKind::Trait(.., ref generics, ref supertraits, _) => (generics, supertraits), - hir::ItemKind::TraitAlias(ref generics, ref supertraits) => (generics, supertraits), + hir::ItemKind::Trait(.., generics, supertraits, _) => (generics, supertraits), + hir::ItemKind::TraitAlias(generics, supertraits) => (generics, supertraits), _ => span_bug!(item.span, "super_predicates invoked on non-trait"), }; @@ -612,18 +612,18 @@ pub(super) fn type_param_predicates( Node::Item(item) => { match item.kind { - ItemKind::Fn(.., ref generics, _) - | ItemKind::Impl(hir::Impl { ref generics, .. }) - | ItemKind::TyAlias(_, ref generics) + ItemKind::Fn(.., generics, _) + | ItemKind::Impl(&hir::Impl { generics, .. }) + | ItemKind::TyAlias(_, generics) | ItemKind::OpaqueTy(OpaqueTy { - ref generics, + generics, origin: hir::OpaqueTyOrigin::TyAlias, .. }) - | ItemKind::Enum(_, ref generics) - | ItemKind::Struct(_, ref generics) - | ItemKind::Union(_, ref generics) => generics, - ItemKind::Trait(_, _, ref generics, ..) => { + | ItemKind::Enum(_, generics) + | ItemKind::Struct(_, generics) + | ItemKind::Union(_, generics) => generics, + ItemKind::Trait(_, _, generics, ..) => { // Implied `Self: Trait` and supertrait bounds. if param_id == item_hir_id { let identity_trait_ref = ty::TraitRef::identity(tcx, item_def_id); @@ -637,7 +637,7 @@ pub(super) fn type_param_predicates( } Node::ForeignItem(item) => match item.kind { - ForeignItemKind::Fn(_, _, ref generics) => generics, + ForeignItemKind::Fn(_, _, generics) => generics, _ => return result, }, @@ -681,8 +681,8 @@ impl<'tcx> ItemCtxt<'tcx> { ast_generics .predicates .iter() - .filter_map(|wp| match *wp { - hir::WherePredicate::BoundPredicate(ref bp) => Some(bp), + .filter_map(|wp| match wp { + hir::WherePredicate::BoundPredicate(bp) => Some(bp), _ => None, }) .flat_map(|bp| { diff --git a/compiler/rustc_hir_analysis/src/collect/type_of.rs b/compiler/rustc_hir_analysis/src/collect/type_of.rs index 1f9a9f80302..5e388a2f2ba 100644 --- a/compiler/rustc_hir_analysis/src/collect/type_of.rs +++ b/compiler/rustc_hir_analysis/src/collect/type_of.rs @@ -379,7 +379,7 @@ pub(super) fn type_of(tcx: TyCtxt<'_>, def_id: DefId) -> Ty<'_> { ForeignItemKind::Type => tcx.mk_foreign(def_id.to_def_id()), }, - Node::Ctor(&ref def) | Node::Variant(Variant { data: ref def, .. }) => match *def { + Node::Ctor(def) | Node::Variant(Variant { data: def, .. }) => match def { VariantData::Unit(..) | VariantData::Struct(..) => { tcx.type_of(tcx.hir().get_parent_item(hir_id)) } @@ -404,17 +404,17 @@ pub(super) fn type_of(tcx: TyCtxt<'_>, def_id: DefId) -> Ty<'_> { Node::AnonConst(_) => { let parent_node = tcx.hir().get_parent(hir_id); match parent_node { - Node::Ty(&Ty { kind: TyKind::Array(_, ref constant), .. }) - | Node::Expr(&Expr { kind: ExprKind::Repeat(_, ref constant), .. }) + Node::Ty(Ty { kind: TyKind::Array(_, constant), .. }) + | Node::Expr(Expr { kind: ExprKind::Repeat(_, constant), .. }) if constant.hir_id() == hir_id => { tcx.types.usize } - Node::Ty(&Ty { kind: TyKind::Typeof(ref e), .. }) if e.hir_id == hir_id => { + Node::Ty(Ty { kind: TyKind::Typeof(e), .. }) if e.hir_id == hir_id => { tcx.typeck(def_id).node_type(e.hir_id) } - Node::Expr(&Expr { kind: ExprKind::ConstBlock(ref anon_const), .. }) + Node::Expr(Expr { kind: ExprKind::ConstBlock(anon_const), .. }) if anon_const.hir_id == hir_id => { let substs = InternalSubsts::identity_for_item(tcx, def_id.to_def_id()); @@ -434,18 +434,19 @@ pub(super) fn type_of(tcx: TyCtxt<'_>, def_id: DefId) -> Ty<'_> { tcx.typeck(def_id).node_type(hir_id) } - Node::Variant(Variant { disr_expr: Some(ref e), .. }) if e.hir_id == hir_id => { + Node::Variant(Variant { disr_expr: Some(e), .. }) if e.hir_id == hir_id => { tcx.adt_def(tcx.hir().get_parent_item(hir_id)).repr().discr_type().to_ty(tcx) } Node::TypeBinding( - binding @ &TypeBinding { + TypeBinding { hir_id: binding_id, - kind: TypeBindingKind::Equality { term: Term::Const(ref e) }, + kind: TypeBindingKind::Equality { term: Term::Const(e) }, + ident, .. }, ) if let Node::TraitRef(trait_ref) = - tcx.hir().get_parent(binding_id) + tcx.hir().get_parent(*binding_id) && e.hir_id == hir_id => { let Some(trait_def_id) = trait_ref.trait_def_id() else { @@ -454,7 +455,7 @@ pub(super) fn type_of(tcx: TyCtxt<'_>, def_id: DefId) -> Ty<'_> { let assoc_items = tcx.associated_items(trait_def_id); let assoc_item = assoc_items.find_by_name_and_kind( tcx, - binding.ident, + *ident, ty::AssocKind::Const, def_id.to_def_id(), ); @@ -470,9 +471,9 @@ pub(super) fn type_of(tcx: TyCtxt<'_>, def_id: DefId) -> Ty<'_> { } Node::TypeBinding( - binding @ &TypeBinding { hir_id: binding_id, gen_args, ref kind, .. }, + TypeBinding { hir_id: binding_id, gen_args, kind, ident, .. }, ) if let Node::TraitRef(trait_ref) = - tcx.hir().get_parent(binding_id) + tcx.hir().get_parent(*binding_id) && let Some((idx, _)) = gen_args.args.iter().enumerate().find(|(_, arg)| { if let GenericArg::Const(ct) = arg { @@ -488,7 +489,7 @@ pub(super) fn type_of(tcx: TyCtxt<'_>, def_id: DefId) -> Ty<'_> { let assoc_items = tcx.associated_items(trait_def_id); let assoc_item = assoc_items.find_by_name_and_kind( tcx, - binding.ident, + *ident, match kind { // I think `<A: T>` type bindings requires that `A` is a type TypeBindingKind::Constraint { .. } diff --git a/compiler/rustc_hir_analysis/src/hir_wf_check.rs b/compiler/rustc_hir_analysis/src/hir_wf_check.rs index 2dbfc1bc9a2..9cf82b39ec9 100644 --- a/compiler/rustc_hir_analysis/src/hir_wf_check.rs +++ b/compiler/rustc_hir_analysis/src/hir_wf_check.rs @@ -1,11 +1,12 @@ use crate::collect::ItemCtxt; use rustc_hir as hir; use rustc_hir::intravisit::{self, Visitor}; -use rustc_hir::{ForeignItem, ForeignItemKind, HirId}; +use rustc_hir::{ForeignItem, ForeignItemKind}; use rustc_infer::infer::TyCtxtInferExt; use rustc_infer::traits::{ObligationCause, WellFormedLoc}; use rustc_middle::ty::query::Providers; use rustc_middle::ty::{self, Region, TyCtxt, TypeFoldable, TypeFolder}; +use rustc_span::def_id::LocalDefId; use rustc_trait_selection::traits; pub fn provide(providers: &mut Providers) { @@ -57,7 +58,7 @@ fn diagnostic_hir_wf_check<'tcx>( cause: Option<ObligationCause<'tcx>>, cause_depth: usize, icx: ItemCtxt<'tcx>, - hir_id: HirId, + def_id: LocalDefId, param_env: ty::ParamEnv<'tcx>, depth: usize, } @@ -68,7 +69,7 @@ fn diagnostic_hir_wf_check<'tcx>( let tcx_ty = self.icx.to_ty(ty).fold_with(&mut EraseAllBoundRegions { tcx: self.tcx }); let cause = traits::ObligationCause::new( ty.span, - self.hir_id, + self.def_id, traits::ObligationCauseCode::WellFormed(None), ); let errors = traits::fully_solve_obligation( @@ -106,7 +107,7 @@ fn diagnostic_hir_wf_check<'tcx>( cause: None, cause_depth: 0, icx, - hir_id, + def_id, param_env: tcx.param_env(def_id.to_def_id()), depth: 0, }; @@ -128,7 +129,7 @@ fn diagnostic_hir_wf_check<'tcx>( }, hir::Node::Item(item) => match item.kind { hir::ItemKind::Static(ty, _, _) | hir::ItemKind::Const(ty, _) => vec![ty], - hir::ItemKind::Impl(ref impl_) => match &impl_.of_trait { + hir::ItemKind::Impl(impl_) => match &impl_.of_trait { Some(t) => t .path .segments diff --git a/compiler/rustc_hir_analysis/src/impl_wf_check/min_specialization.rs b/compiler/rustc_hir_analysis/src/impl_wf_check/min_specialization.rs index bcda26c4cc8..a5dcfab9be8 100644 --- a/compiler/rustc_hir_analysis/src/impl_wf_check/min_specialization.rs +++ b/compiler/rustc_hir_analysis/src/impl_wf_check/min_specialization.rs @@ -164,7 +164,6 @@ fn get_impl_substs( let infcx = &tcx.infer_ctxt().build(); let ocx = ObligationCtxt::new(infcx); let param_env = tcx.param_env(impl1_def_id); - let impl1_hir_id = tcx.hir().local_def_id_to_hir_id(impl1_def_id); let assumed_wf_types = ocx.assumed_wf_types(param_env, tcx.def_span(impl1_def_id), impl1_def_id); @@ -179,7 +178,7 @@ fn get_impl_substs( return None; } - let implied_bounds = infcx.implied_bounds_tys(param_env, impl1_hir_id, assumed_wf_types); + let implied_bounds = infcx.implied_bounds_tys(param_env, impl1_def_id, assumed_wf_types); let outlives_env = OutlivesEnvironment::with_bounds(param_env, Some(infcx), implied_bounds); let _ = infcx.err_ctxt().check_region_obligations_and_report_errors(impl1_def_id, &outlives_env); @@ -372,15 +371,9 @@ fn check_predicates<'tcx>( // Include the well-formed predicates of the type parameters of the impl. for arg in tcx.impl_trait_ref(impl1_def_id).unwrap().subst_identity().substs { let infcx = &tcx.infer_ctxt().build(); - let obligations = wf::obligations( - infcx, - tcx.param_env(impl1_def_id), - tcx.hir().local_def_id_to_hir_id(impl1_def_id), - 0, - arg, - span, - ) - .unwrap(); + let obligations = + wf::obligations(infcx, tcx.param_env(impl1_def_id), impl1_def_id, 0, arg, span) + .unwrap(); assert!(!obligations.needs_infer()); impl2_predicates.extend( diff --git a/compiler/rustc_hir_analysis/src/lib.rs b/compiler/rustc_hir_analysis/src/lib.rs index 9f8da463650..da352100238 100644 --- a/compiler/rustc_hir_analysis/src/lib.rs +++ b/compiler/rustc_hir_analysis/src/lib.rs @@ -100,20 +100,21 @@ mod variance; use rustc_errors::{struct_span_err, ErrorGuaranteed}; use rustc_hir as hir; -use rustc_hir::def_id::DefId; -use rustc_hir::{Node, CRATE_HIR_ID}; +use rustc_hir::Node; use rustc_infer::infer::{InferOk, TyCtxtInferExt}; use rustc_middle::middle; use rustc_middle::ty::query::Providers; use rustc_middle::ty::{self, Ty, TyCtxt}; use rustc_middle::util; use rustc_session::{config::EntryFnType, parse::feature_err}; +use rustc_span::def_id::{DefId, LocalDefId, CRATE_DEF_ID}; use rustc_span::{symbol::sym, Span, DUMMY_SP}; use rustc_target::spec::abi::Abi; use rustc_trait_selection::traits::error_reporting::TypeErrCtxtExt as _; use rustc_trait_selection::traits::{self, ObligationCause, ObligationCauseCode}; use std::iter; +use std::ops::Not; use astconv::AstConv; use bounds::Bounds; @@ -184,16 +185,15 @@ fn check_main_fn_ty(tcx: TyCtxt<'_>, main_def_id: DefId) { let main_fnsig = tcx.fn_sig(main_def_id); let main_span = tcx.def_span(main_def_id); - fn main_fn_diagnostics_hir_id(tcx: TyCtxt<'_>, def_id: DefId, sp: Span) -> hir::HirId { + fn main_fn_diagnostics_def_id(tcx: TyCtxt<'_>, def_id: DefId, sp: Span) -> LocalDefId { if let Some(local_def_id) = def_id.as_local() { - let hir_id = tcx.hir().local_def_id_to_hir_id(local_def_id); let hir_type = tcx.type_of(local_def_id); if !matches!(hir_type.kind(), ty::FnDef(..)) { span_bug!(sp, "main has a non-function type: found `{}`", hir_type); } - hir_id + local_def_id } else { - CRATE_HIR_ID + CRATE_DEF_ID } } @@ -203,12 +203,8 @@ fn check_main_fn_ty(tcx: TyCtxt<'_>, main_def_id: DefId) { } let hir_id = tcx.hir().local_def_id_to_hir_id(def_id.expect_local()); match tcx.hir().find(hir_id) { - Some(Node::Item(hir::Item { kind: hir::ItemKind::Fn(_, ref generics, _), .. })) => { - if !generics.params.is_empty() { - Some(generics.span) - } else { - None - } + Some(Node::Item(hir::Item { kind: hir::ItemKind::Fn(_, generics, _), .. })) => { + generics.params.is_empty().not().then(|| generics.span) } _ => { span_bug!(tcx.def_span(def_id), "main has a non-function type"); @@ -222,7 +218,7 @@ fn check_main_fn_ty(tcx: TyCtxt<'_>, main_def_id: DefId) { } let hir_id = tcx.hir().local_def_id_to_hir_id(def_id.expect_local()); match tcx.hir().find(hir_id) { - Some(Node::Item(hir::Item { kind: hir::ItemKind::Fn(_, ref generics, _), .. })) => { + Some(Node::Item(hir::Item { kind: hir::ItemKind::Fn(_, generics, _), .. })) => { Some(generics.where_clause_span) } _ => { @@ -244,7 +240,7 @@ fn check_main_fn_ty(tcx: TyCtxt<'_>, main_def_id: DefId) { } let hir_id = tcx.hir().local_def_id_to_hir_id(def_id.expect_local()); match tcx.hir().find(hir_id) { - Some(Node::Item(hir::Item { kind: hir::ItemKind::Fn(ref fn_sig, _, _), .. })) => { + Some(Node::Item(hir::Item { kind: hir::ItemKind::Fn(fn_sig, _, _), .. })) => { Some(fn_sig.decl.output.span()) } _ => { @@ -254,7 +250,7 @@ fn check_main_fn_ty(tcx: TyCtxt<'_>, main_def_id: DefId) { } let mut error = false; - let main_diagnostics_hir_id = main_fn_diagnostics_hir_id(tcx, main_def_id, main_span); + let main_diagnostics_def_id = main_fn_diagnostics_def_id(tcx, main_def_id, main_span); let main_fn_generics = tcx.generics_of(main_def_id); let main_fn_predicates = tcx.predicates_of(main_def_id); if main_fn_generics.count() != 0 || !main_fnsig.bound_vars().is_empty() { @@ -329,7 +325,7 @@ fn check_main_fn_ty(tcx: TyCtxt<'_>, main_def_id: DefId) { let param_env = ty::ParamEnv::empty(); let cause = traits::ObligationCause::new( return_ty_span, - main_diagnostics_hir_id, + main_diagnostics_def_id, ObligationCauseCode::MainFunctionType, ); let ocx = traits::ObligationCtxt::new(&infcx); @@ -359,7 +355,7 @@ fn check_main_fn_ty(tcx: TyCtxt<'_>, main_def_id: DefId) { tcx, &ObligationCause::new( main_span, - main_diagnostics_hir_id, + main_diagnostics_def_id, ObligationCauseCode::MainFunctionType, ), se_ty, @@ -374,7 +370,7 @@ fn check_start_fn_ty(tcx: TyCtxt<'_>, start_def_id: DefId) { match start_t.kind() { ty::FnDef(..) => { if let Some(Node::Item(it)) = tcx.hir().find(start_id) { - if let hir::ItemKind::Fn(ref sig, ref generics, _) = it.kind { + if let hir::ItemKind::Fn(sig, generics, _) = &it.kind { let mut error = false; if !generics.params.is_empty() { struct_span_err!( @@ -447,7 +443,11 @@ fn check_start_fn_ty(tcx: TyCtxt<'_>, start_def_id: DefId) { require_same_types( tcx, - &ObligationCause::new(start_span, start_id, ObligationCauseCode::StartFunctionType), + &ObligationCause::new( + start_span, + start_def_id, + ObligationCauseCode::StartFunctionType, + ), se_ty, tcx.mk_fn_ptr(tcx.fn_sig(start_def_id)), ); diff --git a/compiler/rustc_hir_analysis/src/structured_errors/wrong_number_of_generic_args.rs b/compiler/rustc_hir_analysis/src/structured_errors/wrong_number_of_generic_args.rs index 574b1e8b485..9133e6540d4 100644 --- a/compiler/rustc_hir_analysis/src/structured_errors/wrong_number_of_generic_args.rs +++ b/compiler/rustc_hir_analysis/src/structured_errors/wrong_number_of_generic_args.rs @@ -727,8 +727,8 @@ impl<'a, 'tcx> WrongNumberOfGenericArgs<'a, 'tcx> { if let Some(parent_node) = self.tcx.hir().opt_parent_id(self.path_segment.hir_id) && let Some(parent_node) = self.tcx.hir().find(parent_node) && let hir::Node::Expr(expr) = parent_node { - match expr.kind { - hir::ExprKind::Path(ref qpath) => { + match &expr.kind { + hir::ExprKind::Path(qpath) => { self.suggest_moving_args_from_assoc_fn_to_trait_for_qualified_path( err, qpath, diff --git a/compiler/rustc_hir_analysis/src/variance/solve.rs b/compiler/rustc_hir_analysis/src/variance/solve.rs index c9b59d35704..a17edb598ad 100644 --- a/compiler/rustc_hir_analysis/src/variance/solve.rs +++ b/compiler/rustc_hir_analysis/src/variance/solve.rs @@ -5,8 +5,7 @@ //! optimal solution to the constraints. The final variance for each //! inferred is then written into the `variance_map` in the tcx. -use rustc_data_structures::fx::FxHashMap; -use rustc_hir::def_id::DefId; +use rustc_hir::def_id::DefIdMap; use rustc_middle::ty; use super::constraints::*; @@ -28,8 +27,8 @@ pub fn solve_constraints<'tcx>( let ConstraintContext { terms_cx, constraints, .. } = constraints_cx; let mut solutions = vec![ty::Bivariant; terms_cx.inferred_terms.len()]; - for &(id, ref variances) in &terms_cx.lang_items { - let InferredIndex(start) = terms_cx.inferred_starts[&id]; + for (id, variances) in &terms_cx.lang_items { + let InferredIndex(start) = terms_cx.inferred_starts[id]; for (i, &variance) in variances.iter().enumerate() { solutions[start + i] = variance; } @@ -89,14 +88,12 @@ impl<'a, 'tcx> SolveContext<'a, 'tcx> { } } - fn create_map(&self) -> FxHashMap<DefId, &'tcx [ty::Variance]> { + fn create_map(&self) -> DefIdMap<&'tcx [ty::Variance]> { let tcx = self.terms_cx.tcx; let solutions = &self.solutions; - self.terms_cx - .inferred_starts - .iter() - .map(|(&def_id, &InferredIndex(start))| { + DefIdMap::from(self.terms_cx.inferred_starts.items().map( + |(&def_id, &InferredIndex(start))| { let generics = tcx.generics_of(def_id); let count = generics.count(); @@ -115,8 +112,8 @@ impl<'a, 'tcx> SolveContext<'a, 'tcx> { } (def_id.to_def_id(), &*variances) - }) - .collect() + }, + )) } fn evaluate(&self, term: VarianceTermPtr<'a>) -> ty::Variance { diff --git a/compiler/rustc_hir_typeck/src/_match.rs b/compiler/rustc_hir_typeck/src/_match.rs index b6f19d3cc68..73aba2780d6 100644 --- a/compiler/rustc_hir_typeck/src/_match.rs +++ b/compiler/rustc_hir_typeck/src/_match.rs @@ -186,10 +186,10 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { prior_arm: Option<(Option<hir::HirId>, Ty<'tcx>, Span)>, ) { let hir = self.tcx.hir(); - // First, check that we're actually in the tail of a function. - let hir::Node::Expr(hir::Expr { kind: hir::ExprKind::Block(block, _), .. }) = - hir.get(self.body_id) else { return; }; + let Some(body_id) = hir.maybe_body_owned_by(self.body_id) else { return; }; + let body = hir.body(body_id); + let hir::ExprKind::Block(block, _) = body.value.kind else { return; }; let Some(hir::Stmt { kind: hir::StmtKind::Semi(last_expr), .. }) = block.innermost_block().stmts.last() else { return; }; if last_expr.hir_id != expr.hir_id { @@ -198,7 +198,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { // Next, make sure that we have no type expectation. let Some(ret) = hir - .find_by_def_id(self.body_id.owner.def_id) + .find_by_def_id(self.body_id) .and_then(|owner| owner.fn_decl()) .map(|decl| decl.output.span()) else { return; }; let Expectation::IsLast(stmt) = expectation else { diff --git a/compiler/rustc_hir_typeck/src/check.rs b/compiler/rustc_hir_typeck/src/check.rs index 57feefbcab6..8bbbf04c0cd 100644 --- a/compiler/rustc_hir_typeck/src/check.rs +++ b/compiler/rustc_hir_typeck/src/check.rs @@ -43,7 +43,7 @@ pub(super) fn check_fn<'a, 'tcx>( let ret_ty = fcx.register_infer_ok_obligations(fcx.infcx.replace_opaque_types_with_inference_vars( declared_ret_ty, - body.value.hir_id, + fn_def_id, decl.output.span(), fcx.param_env, )); diff --git a/compiler/rustc_hir_typeck/src/closure.rs b/compiler/rustc_hir_typeck/src/closure.rs index 12a2abfa76a..329b69eff54 100644 --- a/compiler/rustc_hir_typeck/src/closure.rs +++ b/compiler/rustc_hir_typeck/src/closure.rs @@ -4,7 +4,6 @@ use super::{check_fn, Expectation, FnCtxt, GeneratorTypes}; use hir::def::DefKind; use rustc_hir as hir; -use rustc_hir::def_id::LocalDefId; use rustc_hir::lang_items::LangItem; use rustc_hir_analysis::astconv::AstConv; use rustc_infer::infer::type_variable::{TypeVariableOrigin, TypeVariableOriginKind}; @@ -14,6 +13,7 @@ use rustc_macros::{TypeFoldable, TypeVisitable}; use rustc_middle::ty::subst::InternalSubsts; use rustc_middle::ty::visit::TypeVisitable; use rustc_middle::ty::{self, Ty, TypeSuperVisitable, TypeVisitor}; +use rustc_span::def_id::LocalDefId; use rustc_span::source_map::Span; use rustc_target::spec::abi::Abi; use rustc_trait_selection::traits; @@ -80,7 +80,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { debug!(?bound_sig, ?liberated_sig); - let mut fcx = FnCtxt::new(self, self.param_env.without_const(), body.value.hir_id); + let mut fcx = FnCtxt::new(self, self.param_env.without_const(), closure.def_id); let generator_types = check_fn( &mut fcx, liberated_sig, @@ -620,8 +620,9 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { // function. Some(hir::GeneratorKind::Async(hir::AsyncGeneratorKind::Fn)) => { debug!("closure is async fn body"); - self.deduce_future_output_from_obligations(expr_def_id, body.id().hir_id) - .unwrap_or_else(|| { + let def_id = self.tcx.hir().body_owner_def_id(body.id()); + self.deduce_future_output_from_obligations(expr_def_id, def_id).unwrap_or_else( + || { // AFAIK, deducing the future output // always succeeds *except* in error cases // like #65159. I'd like to return Error @@ -630,7 +631,8 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { // *have* reported an // error. --nikomatsakis astconv.ty_infer(None, decl.output.span()) - }) + }, + ) } _ => astconv.ty_infer(None, decl.output.span()), @@ -665,7 +667,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { fn deduce_future_output_from_obligations( &self, expr_def_id: LocalDefId, - body_id: hir::HirId, + body_def_id: LocalDefId, ) -> Option<Ty<'tcx>> { let ret_coercion = self.ret_coercion.as_ref().unwrap_or_else(|| { span_bug!(self.tcx.def_span(expr_def_id), "async fn generator outside of a fn") @@ -725,7 +727,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { let InferOk { value: output_ty, obligations } = self .replace_opaque_types_with_inference_vars( output_ty, - body_id, + body_def_id, self.tcx.def_span(expr_def_id), self.param_env, ); diff --git a/compiler/rustc_hir_typeck/src/coercion.rs b/compiler/rustc_hir_typeck/src/coercion.rs index bbf7b81a2cc..1a0715a91cb 100644 --- a/compiler/rustc_hir_typeck/src/coercion.rs +++ b/compiler/rustc_hir_typeck/src/coercion.rs @@ -1613,12 +1613,14 @@ impl<'tcx, 'exprs, E: AsCoercionSite> CoerceMany<'tcx, 'exprs, E> { if visitor.ret_exprs.len() > 0 && let Some(expr) = expression { self.note_unreachable_loop_return(&mut err, &expr, &visitor.ret_exprs); } + let reported = err.emit_unless(unsized_return); self.final_ty = Some(fcx.tcx.ty_error_with_guaranteed(reported)); } } } + fn note_unreachable_loop_return( &self, err: &mut Diagnostic, diff --git a/compiler/rustc_hir_typeck/src/demand.rs b/compiler/rustc_hir_typeck/src/demand.rs index 665dc8b6a2f..7379e75963f 100644 --- a/compiler/rustc_hir_typeck/src/demand.rs +++ b/compiler/rustc_hir_typeck/src/demand.rs @@ -59,7 +59,8 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { || self.suggest_copied_or_cloned(err, expr, expr_ty, expected) || self.suggest_clone_for_ref(err, expr, expr_ty, expected) || self.suggest_into(err, expr, expr_ty, expected) - || self.suggest_floating_point_literal(err, expr, expected); + || self.suggest_floating_point_literal(err, expr, expected) + || self.note_result_coercion(err, expr, expected, expr_ty); if !suggested { self.point_at_expr_source_of_inferred_type(err, expr, expr_ty, expected); } @@ -81,7 +82,6 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { self.annotate_expected_due_to_let_ty(err, expr, error); self.emit_type_mismatch_suggestions(err, expr, expr_ty, expected, expected_ty_expr, error); self.note_type_is_not_clone(err, expected, expr_ty, expr); - self.note_need_for_fn_pointer(err, expected, expr_ty); self.note_internal_mutation_in_method(err, expr, expected, expr_ty); self.check_for_range_as_method_call(err, expr, expr_ty, expected); self.check_for_binding_assigned_block_without_tail_expression(err, expr, expr_ty, expected); @@ -697,6 +697,56 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { ); } + pub(crate) fn note_result_coercion( + &self, + err: &mut Diagnostic, + expr: &hir::Expr<'tcx>, + expected: Ty<'tcx>, + found: Ty<'tcx>, + ) -> bool { + let ty::Adt(e, substs_e) = expected.kind() else { return false; }; + let ty::Adt(f, substs_f) = found.kind() else { return false; }; + if e.did() != f.did() { + return false; + } + if Some(e.did()) != self.tcx.get_diagnostic_item(sym::Result) { + return false; + } + let map = self.tcx.hir(); + if let Some(hir::Node::Expr(expr)) = map.find_parent(expr.hir_id) + && let hir::ExprKind::Ret(_) = expr.kind + { + // `return foo;` + } else if map.get_return_block(expr.hir_id).is_some() { + // Function's tail expression. + } else { + return false; + } + let e = substs_e.type_at(1); + let f = substs_f.type_at(1); + if self + .infcx + .type_implements_trait( + self.tcx.get_diagnostic_item(sym::Into).unwrap(), + [f, e], + self.param_env, + ) + .must_apply_modulo_regions() + { + err.multipart_suggestion( + "use `?` to coerce and return an appropriate `Err`, and wrap the resulting value \ + in `Ok` so the expression remains of type `Result`", + vec![ + (expr.span.shrink_to_lo(), "Ok(".to_string()), + (expr.span.shrink_to_hi(), "?)".to_string()), + ], + Applicability::MaybeIncorrect, + ); + return true; + } + false + } + /// If the expected type is an enum (Issue #55250) with any variants whose /// sole field is of the found type, suggest such variants. (Issue #42764) fn suggest_compatible_variants( @@ -1233,6 +1283,22 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { sugg_sp = receiver.span; } } + + if let hir::ExprKind::Unary(hir::UnOp::Deref, ref inner) = expr.kind + && let Some(1) = self.deref_steps(expected, checked_ty) { + // We have `*&T`, check if what was expected was `&T`. + // If so, we may want to suggest removing a `*`. + sugg_sp = sugg_sp.with_hi(inner.span.lo()); + return Some(( + sugg_sp, + "consider removing deref here".to_string(), + "".to_string(), + Applicability::MachineApplicable, + true, + false, + )); + } + if let Ok(src) = sm.span_to_snippet(sugg_sp) { let needs_parens = match expr.kind { // parenthesize if needed (Issue #46756) diff --git a/compiler/rustc_hir_typeck/src/expr.rs b/compiler/rustc_hir_typeck/src/expr.rs index bc7474cdfcf..05898473104 100644 --- a/compiler/rustc_hir_typeck/src/expr.rs +++ b/compiler/rustc_hir_typeck/src/expr.rs @@ -852,7 +852,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { // Point any obligations that were registered due to opaque type // inference at the return expression. self.select_obligations_where_possible(|errors| { - self.point_at_return_for_opaque_ty_error(errors, span, return_expr_ty); + self.point_at_return_for_opaque_ty_error(errors, span, return_expr_ty, return_expr.span); }); } } @@ -862,9 +862,10 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { errors: &mut Vec<traits::FulfillmentError<'tcx>>, span: Span, return_expr_ty: Ty<'tcx>, + return_span: Span, ) { // Don't point at the whole block if it's empty - if span == self.tcx.hir().span(self.body_id) { + if span == return_span { return; } for err in errors { @@ -1374,7 +1375,8 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { let body = self.tcx.hir().body(anon_const.body); // Create a new function context. - let fcx = FnCtxt::new(self, self.param_env.with_const(), body.value.hir_id); + let def_id = anon_const.def_id; + let fcx = FnCtxt::new(self, self.param_env.with_const(), def_id); crate::GatherLocalsVisitor::new(&fcx).visit_body(body); let ty = fcx.check_expr_with_expectation(&body.value, expected); @@ -2151,13 +2153,18 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { variant: &'tcx ty::VariantDef, access_span: Span, ) -> Vec<Symbol> { + let body_owner_hir_id = self.tcx.hir().local_def_id_to_hir_id(self.body_id); variant .fields .iter() .filter(|field| { let def_scope = self .tcx - .adjust_ident_and_get_scope(field.ident(self.tcx), variant.def_id, self.body_id) + .adjust_ident_and_get_scope( + field.ident(self.tcx), + variant.def_id, + body_owner_hir_id, + ) .1; field.vis.is_accessible_from(def_scope, self.tcx) && !matches!( @@ -2199,8 +2206,9 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { match deref_base_ty.kind() { ty::Adt(base_def, substs) if !base_def.is_enum() => { debug!("struct named {:?}", deref_base_ty); + let body_hir_id = self.tcx.hir().local_def_id_to_hir_id(self.body_id); let (ident, def_scope) = - self.tcx.adjust_ident_and_get_scope(field, base_def.did(), self.body_id); + self.tcx.adjust_ident_and_get_scope(field, base_def.did(), body_hir_id); let fields = &base_def.non_enum_variant().fields; if let Some(index) = fields .iter() @@ -2538,7 +2546,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { } fn point_at_param_definition(&self, err: &mut Diagnostic, param: ty::ParamTy) { - let generics = self.tcx.generics_of(self.body_id.owner.to_def_id()); + let generics = self.tcx.generics_of(self.body_id); let generic_param = generics.type_param(¶m, self.tcx); if let ty::GenericParamDefKind::Type { synthetic: true, .. } = generic_param.kind { return; diff --git a/compiler/rustc_hir_typeck/src/fallback.rs b/compiler/rustc_hir_typeck/src/fallback.rs index dde8797804f..943dc9b9646 100644 --- a/compiler/rustc_hir_typeck/src/fallback.rs +++ b/compiler/rustc_hir_typeck/src/fallback.rs @@ -196,8 +196,6 @@ impl<'tcx> FnCtxt<'_, 'tcx> { ) -> FxHashMap<Ty<'tcx>, Ty<'tcx>> { debug!("calculate_diverging_fallback({:?})", unsolved_variables); - let relationships = self.fulfillment_cx.borrow_mut().relationships().clone(); - // Construct a coercion graph where an edge `A -> B` indicates // a type variable is that is coerced let coercion_graph = self.create_coercion_graph(); @@ -281,9 +279,7 @@ impl<'tcx> FnCtxt<'_, 'tcx> { roots_reachable_from_non_diverging, ); - debug!("inherited: {:#?}", self.inh.fulfillment_cx.borrow_mut().pending_obligations()); debug!("obligations: {:#?}", self.fulfillment_cx.borrow_mut().pending_obligations()); - debug!("relationships: {:#?}", relationships); // For each diverging variable, figure out whether it can // reach a member of N. If so, it falls back to `()`. Else @@ -297,16 +293,16 @@ impl<'tcx> FnCtxt<'_, 'tcx> { .depth_first_search(root_vid) .any(|n| roots_reachable_from_non_diverging.visited(n)); - let mut relationship = ty::FoundRelationships { self_in_trait: false, output: false }; + let mut found_infer_var_info = ty::InferVarInfo { self_in_trait: false, output: false }; - for (vid, rel) in relationships.iter() { - if self.root_var(*vid) == root_vid { - relationship.self_in_trait |= rel.self_in_trait; - relationship.output |= rel.output; + for (vid, info) in self.inh.infer_var_info.borrow().iter() { + if self.infcx.root_var(*vid) == root_vid { + found_infer_var_info.self_in_trait |= info.self_in_trait; + found_infer_var_info.output |= info.output; } } - if relationship.self_in_trait && relationship.output { + if found_infer_var_info.self_in_trait && found_infer_var_info.output { // This case falls back to () to ensure that the code pattern in // tests/ui/never_type/fallback-closure-ret.rs continues to // compile when never_type_fallback is enabled. diff --git a/compiler/rustc_hir_typeck/src/fn_ctxt/_impl.rs b/compiler/rustc_hir_typeck/src/fn_ctxt/_impl.rs index 6ed8adb4742..e9858aef6d0 100644 --- a/compiler/rustc_hir_typeck/src/fn_ctxt/_impl.rs +++ b/compiler/rustc_hir_typeck/src/fn_ctxt/_impl.rs @@ -926,43 +926,6 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { } } - pub(in super::super) fn note_need_for_fn_pointer( - &self, - err: &mut Diagnostic, - expected: Ty<'tcx>, - found: Ty<'tcx>, - ) { - let (sig, did, substs) = match (&expected.kind(), &found.kind()) { - (ty::FnDef(did1, substs1), ty::FnDef(did2, substs2)) => { - let sig1 = self.tcx.bound_fn_sig(*did1).subst(self.tcx, substs1); - let sig2 = self.tcx.bound_fn_sig(*did2).subst(self.tcx, substs2); - if sig1 != sig2 { - return; - } - err.note( - "different `fn` items always have unique types, even if their signatures are \ - the same", - ); - (sig1, *did1, substs1) - } - (ty::FnDef(did, substs), ty::FnPtr(sig2)) => { - let sig1 = self.tcx.bound_fn_sig(*did).subst(self.tcx, substs); - if sig1 != *sig2 { - return; - } - (sig1, *did, substs) - } - _ => return, - }; - err.help(&format!("change the expected type to be function pointer `{}`", sig)); - err.help(&format!( - "if the expected type is due to type inference, cast the expected `fn` to a function \ - pointer: `{} as {}`", - self.tcx.def_path_str_with_substs(did, substs), - sig - )); - } - // Instantiates the given path, which must refer to an item with the given // number of type parameters and type. #[instrument(skip(self, span), level = "debug")] diff --git a/compiler/rustc_hir_typeck/src/fn_ctxt/checks.rs b/compiler/rustc_hir_typeck/src/fn_ctxt/checks.rs index c9609e69439..a6d96881c8f 100644 --- a/compiler/rustc_hir_typeck/src/fn_ctxt/checks.rs +++ b/compiler/rustc_hir_typeck/src/fn_ctxt/checks.rs @@ -2126,7 +2126,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { match *callee_ty.kind() { ty::Param(param) => { let param = - self.tcx.generics_of(self.body_id.owner).type_param(¶m, self.tcx); + self.tcx.generics_of(self.body_id).type_param(¶m, self.tcx); if param.kind.is_synthetic() { // if it's `impl Fn() -> ..` then just fall down to the def-id based logic def_id = param.def_id; @@ -2135,7 +2135,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { // and point at that. let instantiated = self .tcx - .explicit_predicates_of(self.body_id.owner) + .explicit_predicates_of(self.body_id) .instantiate_identity(self.tcx); // FIXME(compiler-errors): This could be problematic if something has two // fn-like predicates with different args, but callable types really never diff --git a/compiler/rustc_hir_typeck/src/fn_ctxt/mod.rs b/compiler/rustc_hir_typeck/src/fn_ctxt/mod.rs index 428fde642bc..8724e69cc51 100644 --- a/compiler/rustc_hir_typeck/src/fn_ctxt/mod.rs +++ b/compiler/rustc_hir_typeck/src/fn_ctxt/mod.rs @@ -10,7 +10,7 @@ pub use suggestions::*; use crate::coercion::DynamicCoerceMany; use crate::{Diverges, EnclosingBreakables, Inherited}; use rustc_hir as hir; -use rustc_hir::def_id::DefId; +use rustc_hir::def_id::{DefId, LocalDefId}; use rustc_hir_analysis::astconv::AstConv; use rustc_infer::infer; use rustc_infer::infer::error_reporting::TypeErrCtxt; @@ -38,7 +38,7 @@ use std::ops::Deref; /// [`ItemCtxt`]: rustc_hir_analysis::collect::ItemCtxt /// [`InferCtxt`]: infer::InferCtxt pub struct FnCtxt<'a, 'tcx> { - pub(super) body_id: hir::HirId, + pub(super) body_id: LocalDefId, /// The parameter environment used for proving trait obligations /// in this function. This can change when we descend into @@ -117,7 +117,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { pub fn new( inh: &'a Inherited<'tcx>, param_env: ty::ParamEnv<'tcx>, - body_id: hir::HirId, + body_id: LocalDefId, ) -> FnCtxt<'a, 'tcx> { FnCtxt { body_id, @@ -204,7 +204,7 @@ impl<'a, 'tcx> AstConv<'tcx> for FnCtxt<'a, 'tcx> { } fn item_def_id(&self) -> DefId { - self.body_id.owner.to_def_id() + self.body_id.to_def_id() } fn get_type_parameter_bounds( diff --git a/compiler/rustc_hir_typeck/src/fn_ctxt/suggestions.rs b/compiler/rustc_hir_typeck/src/fn_ctxt/suggestions.rs index 4d673ac9147..6046e55c65c 100644 --- a/compiler/rustc_hir_typeck/src/fn_ctxt/suggestions.rs +++ b/compiler/rustc_hir_typeck/src/fn_ctxt/suggestions.rs @@ -31,7 +31,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { self.typeck_results .borrow() .liberated_fn_sigs() - .get(self.tcx.hir().parent_id(self.body_id)) + .get(self.tcx.hir().local_def_id_to_hir_id(self.body_id)) .copied() } @@ -164,7 +164,8 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { &self, ty: Ty<'tcx>, ) -> Option<(DefIdOrName, Ty<'tcx>, Vec<Ty<'tcx>>)> { - self.err_ctxt().extract_callable_info(self.body_id, self.param_env, ty) + let body_hir_id = self.tcx.hir().local_def_id_to_hir_id(self.body_id); + self.err_ctxt().extract_callable_info(body_hir_id, self.param_env, ty) } pub fn suggest_two_fn_call( diff --git a/compiler/rustc_hir_typeck/src/generator_interior/drop_ranges/cfg_build.rs b/compiler/rustc_hir_typeck/src/generator_interior/drop_ranges/cfg_build.rs index 16806fdba4f..b3dd3031db2 100644 --- a/compiler/rustc_hir_typeck/src/generator_interior/drop_ranges/cfg_build.rs +++ b/compiler/rustc_hir_typeck/src/generator_interior/drop_ranges/cfg_build.rs @@ -304,8 +304,8 @@ impl<'a, 'tcx> Visitor<'tcx> for DropRangeVisitor<'a, 'tcx> { let mut reinit = None; match expr.kind { ExprKind::Assign(lhs, rhs, _) => { - self.visit_expr(lhs); self.visit_expr(rhs); + self.visit_expr(lhs); reinit = Some(lhs); } @@ -433,7 +433,7 @@ impl<'a, 'tcx> Visitor<'tcx> for DropRangeVisitor<'a, 'tcx> { self.drop_ranges.add_control_edge(self.expr_index, *target) }), - ExprKind::Break(destination, ..) => { + ExprKind::Break(destination, value) => { // destination either points to an expression or to a block. We use // find_target_expression_from_destination to use the last expression of the block // if destination points to a block. @@ -443,7 +443,11 @@ impl<'a, 'tcx> Visitor<'tcx> for DropRangeVisitor<'a, 'tcx> { // will refer to the end of the block due to the post order traversal. self.find_target_expression_from_destination(destination).map_or((), |target| { self.drop_ranges.add_control_edge_hir_id(self.expr_index, target) - }) + }); + + if let Some(value) = value { + self.visit_expr(value); + } } ExprKind::Call(f, args) => { @@ -465,6 +469,12 @@ impl<'a, 'tcx> Visitor<'tcx> for DropRangeVisitor<'a, 'tcx> { ExprKind::AddrOf(..) | ExprKind::Array(..) + // FIXME(eholk): We probably need special handling for AssignOps. The ScopeTree builder + // in region.rs runs both lhs then rhs and rhs then lhs and then sets all yields to be + // the latest they show up in either traversal. With the older scope-based + // approximation, this was fine, but it's probably not right now. What we probably want + // to do instead is still run both orders, but consider anything that showed up as a + // yield in either order. | ExprKind::AssignOp(..) | ExprKind::Binary(..) | ExprKind::Block(..) @@ -502,6 +512,9 @@ impl<'a, 'tcx> Visitor<'tcx> for DropRangeVisitor<'a, 'tcx> { // Increment expr_count here to match what InteriorVisitor expects. self.expr_index = self.expr_index + 1; + + // Save a node mapping to get better CFG visualization + self.drop_ranges.add_node_mapping(pat.hir_id, self.expr_index); } } @@ -521,7 +534,7 @@ impl DropRangesBuilder { } }); } - debug!("hir_id_map: {:?}", tracked_value_map); + debug!("hir_id_map: {:#?}", tracked_value_map); let num_values = tracked_value_map.len(); Self { tracked_value_map, diff --git a/compiler/rustc_hir_typeck/src/generator_interior/drop_ranges/cfg_visualize.rs b/compiler/rustc_hir_typeck/src/generator_interior/drop_ranges/cfg_visualize.rs index c0a0bfe8e1c..e8d31be79d9 100644 --- a/compiler/rustc_hir_typeck/src/generator_interior/drop_ranges/cfg_visualize.rs +++ b/compiler/rustc_hir_typeck/src/generator_interior/drop_ranges/cfg_visualize.rs @@ -2,6 +2,7 @@ //! flow graph when needed for debugging. use rustc_graphviz as dot; +use rustc_hir::{Expr, ExprKind, Node}; use rustc_middle::ty::TyCtxt; use super::{DropRangesBuilder, PostOrderId}; @@ -80,10 +81,14 @@ impl<'a> dot::Labeller<'a> for DropRangesGraph<'_, '_> { .post_order_map .iter() .find(|(_hir_id, &post_order_id)| post_order_id == *n) - .map_or("<unknown>".into(), |(hir_id, _)| self - .tcx - .hir() - .node_to_string(*hir_id)) + .map_or("<unknown>".into(), |(hir_id, _)| format!( + "{}{}", + self.tcx.hir().node_to_string(*hir_id), + match self.tcx.hir().find(*hir_id) { + Some(Node::Expr(Expr { kind: ExprKind::Yield(..), .. })) => " (yield)", + _ => "", + } + )) ) .into(), ) diff --git a/compiler/rustc_hir_typeck/src/generator_interior/mod.rs b/compiler/rustc_hir_typeck/src/generator_interior/mod.rs index 7990d95310b..7af52605385 100644 --- a/compiler/rustc_hir_typeck/src/generator_interior/mod.rs +++ b/compiler/rustc_hir_typeck/src/generator_interior/mod.rs @@ -71,10 +71,8 @@ impl<'a, 'tcx> InteriorVisitor<'a, 'tcx> { yield_data.expr_and_pat_count, self.expr_count, source_span ); - if self.fcx.sess().opts.unstable_opts.drop_tracking - && self - .drop_ranges - .is_dropped_at(hir_id, yield_data.expr_and_pat_count) + if self + .is_dropped_at_yield_location(hir_id, yield_data.expr_and_pat_count) { debug!("value is dropped at yield point; not recording"); return false; @@ -173,6 +171,18 @@ impl<'a, 'tcx> InteriorVisitor<'a, 'tcx> { } } } + + /// If drop tracking is enabled, consult drop_ranges to see if a value is + /// known to be dropped at a yield point and therefore can be omitted from + /// the generator witness. + fn is_dropped_at_yield_location(&self, value_hir_id: HirId, yield_location: usize) -> bool { + // short-circuit if drop tracking is not enabled. + if !self.fcx.sess().opts.unstable_opts.drop_tracking { + return false; + } + + self.drop_ranges.is_dropped_at(value_hir_id, yield_location) + } } pub fn resolve_interior<'a, 'tcx>( diff --git a/compiler/rustc_hir_typeck/src/inherited.rs b/compiler/rustc_hir_typeck/src/inherited.rs index b33e7b8d68c..ba34f299453 100644 --- a/compiler/rustc_hir_typeck/src/inherited.rs +++ b/compiler/rustc_hir_typeck/src/inherited.rs @@ -1,6 +1,6 @@ use super::callee::DeferredCallResolution; -use rustc_data_structures::fx::FxHashSet; +use rustc_data_structures::fx::{FxHashMap, FxHashSet}; use rustc_hir as hir; use rustc_hir::def_id::LocalDefId; use rustc_hir::HirIdMap; @@ -10,7 +10,8 @@ use rustc_middle::ty::visit::TypeVisitable; use rustc_middle::ty::{self, Ty, TyCtxt}; use rustc_span::def_id::LocalDefIdMap; use rustc_span::{self, Span}; -use rustc_trait_selection::traits::{self, TraitEngine, TraitEngineExt as _}; +use rustc_trait_selection::traits::query::evaluate_obligation::InferCtxtExt; +use rustc_trait_selection::traits::{self, PredicateObligation, TraitEngine, TraitEngineExt as _}; use std::cell::RefCell; use std::ops::Deref; @@ -63,6 +64,8 @@ pub struct Inherited<'tcx> { /// we record that type variable here. This is later used to inform /// fallback. See the `fallback` module for details. pub(super) diverging_type_vars: RefCell<FxHashSet<Ty<'tcx>>>, + + pub(super) infer_var_info: RefCell<FxHashMap<ty::TyVid, ty::InferVarInfo>>, } impl<'tcx> Deref for Inherited<'tcx> { @@ -128,6 +131,7 @@ impl<'tcx> Inherited<'tcx> { deferred_generator_interiors: RefCell::new(Vec::new()), diverging_type_vars: RefCell::new(Default::default()), body_id, + infer_var_info: RefCell::new(Default::default()), } } @@ -136,6 +140,9 @@ impl<'tcx> Inherited<'tcx> { if obligation.has_escaping_bound_vars() { span_bug!(obligation.cause.span, "escaping bound vars in predicate {:?}", obligation); } + + self.update_infer_var_info(&obligation); + self.fulfillment_cx.borrow_mut().register_predicate_obligation(self, obligation); } @@ -152,4 +159,43 @@ impl<'tcx> Inherited<'tcx> { self.register_predicates(infer_ok.obligations); infer_ok.value } + + pub fn update_infer_var_info(&self, obligation: &PredicateObligation<'tcx>) { + let infer_var_info = &mut self.infer_var_info.borrow_mut(); + + // (*) binder skipped + if let ty::PredicateKind::Clause(ty::Clause::Trait(tpred)) = obligation.predicate.kind().skip_binder() + && let Some(ty) = self.shallow_resolve(tpred.self_ty()).ty_vid().map(|t| self.root_var(t)) + && self.tcx.lang_items().sized_trait().map_or(false, |st| st != tpred.trait_ref.def_id) + { + let new_self_ty = self.tcx.types.unit; + + // Then construct a new obligation with Self = () added + // to the ParamEnv, and see if it holds. + let o = obligation.with(self.tcx, + obligation + .predicate + .kind() + .rebind( + // (*) binder moved here + ty::PredicateKind::Clause(ty::Clause::Trait(tpred.with_self_ty(self.tcx, new_self_ty))) + ), + ); + // Don't report overflow errors. Otherwise equivalent to may_hold. + if let Ok(result) = self.probe(|_| self.evaluate_obligation(&o)) && result.may_apply() { + infer_var_info.entry(ty).or_default().self_in_trait = true; + } + } + + if let ty::PredicateKind::Clause(ty::Clause::Projection(predicate)) = + obligation.predicate.kind().skip_binder() + { + // If the projection predicate (Foo::Bar == X) has X as a non-TyVid, + // we need to make it into one. + if let Some(vid) = predicate.term.ty().and_then(|ty| ty.ty_vid()) { + debug!("infer_var_info: {:?}.output = true", vid); + infer_var_info.entry(vid).or_default().output = true; + } + } + } } diff --git a/compiler/rustc_hir_typeck/src/lib.rs b/compiler/rustc_hir_typeck/src/lib.rs index 7ddf9eaa4d8..bb487facc23 100644 --- a/compiler/rustc_hir_typeck/src/lib.rs +++ b/compiler/rustc_hir_typeck/src/lib.rs @@ -201,7 +201,7 @@ fn typeck_with_fallback<'tcx>( let typeck_results = Inherited::build(tcx, def_id).enter(|inh| { let param_env = tcx.param_env(def_id); - let mut fcx = FnCtxt::new(&inh, param_env, body.value.hir_id); + let mut fcx = FnCtxt::new(&inh, param_env, def_id); if let Some(hir::FnSig { header, decl, .. }) = fn_sig { let fn_sig = if rustc_hir_analysis::collect::get_infer_ret_ty(&decl.output).is_some() { diff --git a/compiler/rustc_hir_typeck/src/method/mod.rs b/compiler/rustc_hir_typeck/src/method/mod.rs index b810a967a24..47396204b14 100644 --- a/compiler/rustc_hir_typeck/src/method/mod.rs +++ b/compiler/rustc_hir_typeck/src/method/mod.rs @@ -76,7 +76,7 @@ pub struct NoMatchData<'tcx> { pub unsatisfied_predicates: Vec<(ty::Predicate<'tcx>, Option<ty::Predicate<'tcx>>, Option<ObligationCause<'tcx>>)>, pub out_of_scope_traits: Vec<DefId>, - pub lev_candidate: Option<ty::AssocItem>, + pub similar_candidate: Option<ty::AssocItem>, pub mode: probe::Mode, } diff --git a/compiler/rustc_hir_typeck/src/method/probe.rs b/compiler/rustc_hir_typeck/src/method/probe.rs index a2481431363..939f9c93a02 100644 --- a/compiler/rustc_hir_typeck/src/method/probe.rs +++ b/compiler/rustc_hir_typeck/src/method/probe.rs @@ -461,7 +461,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { static_candidates: Vec::new(), unsatisfied_predicates: Vec::new(), out_of_scope_traits: Vec::new(), - lev_candidate: None, + similar_candidate: None, mode, })); } @@ -508,9 +508,10 @@ fn method_autoderef_steps<'tcx>( let (ref infcx, goal, inference_vars) = tcx.infer_ctxt().build_with_canonical(DUMMY_SP, &goal); let ParamEnvAnd { param_env, value: self_ty } = goal; - let mut autoderef = Autoderef::new(infcx, param_env, hir::CRATE_HIR_ID, DUMMY_SP, self_ty) - .include_raw_pointers() - .silence_errors(); + let mut autoderef = + Autoderef::new(infcx, param_env, hir::def_id::CRATE_DEF_ID, DUMMY_SP, self_ty) + .include_raw_pointers() + .silence_errors(); let mut reached_raw_pointer = false; let mut steps: Vec<_> = autoderef .by_ref() @@ -610,10 +611,9 @@ impl<'a, 'tcx> ProbeContext<'a, 'tcx> { fn push_candidate(&mut self, candidate: Candidate<'tcx>, is_inherent: bool) { let is_accessible = if let Some(name) = self.method_name { let item = candidate.item; - let def_scope = self - .tcx - .adjust_ident_and_get_scope(name, item.container_id(self.tcx), self.body_id) - .1; + let hir_id = self.tcx.hir().local_def_id_to_hir_id(self.body_id); + let def_scope = + self.tcx.adjust_ident_and_get_scope(name, item.container_id(self.tcx), hir_id).1; item.visibility(self.tcx).is_accessible_from(def_scope, self.tcx) } else { true @@ -1076,13 +1076,13 @@ impl<'a, 'tcx> ProbeContext<'a, 'tcx> { if let Some((kind, def_id)) = private_candidate { return Err(MethodError::PrivateMatch(kind, def_id, out_of_scope_traits)); } - let lev_candidate = self.probe_for_lev_candidate()?; + let similar_candidate = self.probe_for_similar_candidate()?; Err(MethodError::NoMatch(NoMatchData { static_candidates, unsatisfied_predicates, out_of_scope_traits, - lev_candidate, + similar_candidate, mode: self.mode, })) } @@ -1787,7 +1787,7 @@ impl<'a, 'tcx> ProbeContext<'a, 'tcx> { /// Similarly to `probe_for_return_type`, this method attempts to find the best matching /// candidate method where the method name may have been misspelled. Similarly to other /// Levenshtein based suggestions, we provide at most one such suggestion. - fn probe_for_lev_candidate(&mut self) -> Result<Option<ty::AssocItem>, MethodError<'tcx>> { + fn probe_for_similar_candidate(&mut self) -> Result<Option<ty::AssocItem>, MethodError<'tcx>> { debug!("probing for method names similar to {:?}", self.method_name); let steps = self.steps.clone(); @@ -1831,6 +1831,12 @@ impl<'a, 'tcx> ProbeContext<'a, 'tcx> { None, ) } + .or_else(|| { + applicable_close_candidates + .iter() + .find(|cand| self.matches_by_doc_alias(cand.def_id)) + .map(|cand| cand.name) + }) .unwrap(); Ok(applicable_close_candidates.into_iter().find(|method| method.name == best_name)) } @@ -1981,6 +1987,38 @@ impl<'a, 'tcx> ProbeContext<'a, 'tcx> { } } + /// Determine if the associated item withe the given DefId matches + /// the desired name via a doc alias. + fn matches_by_doc_alias(&self, def_id: DefId) -> bool { + let Some(name) = self.method_name else { return false; }; + let Some(local_def_id) = def_id.as_local() else { return false; }; + let hir_id = self.fcx.tcx.hir().local_def_id_to_hir_id(local_def_id); + let attrs = self.fcx.tcx.hir().attrs(hir_id); + for attr in attrs { + let sym::doc = attr.name_or_empty() else { continue; }; + let Some(values) = attr.meta_item_list() else { continue; }; + for v in values { + if v.name_or_empty() != sym::alias { + continue; + } + if let Some(nested) = v.meta_item_list() { + // #[doc(alias("foo", "bar"))] + for n in nested { + if let Some(lit) = n.lit() && name.as_str() == lit.symbol.as_str() { + return true; + } + } + } else if let Some(meta) = v.meta_item() + && let Some(lit) = meta.name_value_literal() + && name.as_str() == lit.symbol.as_str() { + // #[doc(alias = "foo")] + return true; + } + } + } + false + } + /// Finds the method with the appropriate name (or return type, as the case may be). If /// `allow_similar_names` is set, find methods with close-matching names. // The length of the returned iterator is nearly always 0 or 1 and this @@ -1996,6 +2034,9 @@ impl<'a, 'tcx> ProbeContext<'a, 'tcx> { if !self.is_relevant_kind_for_mode(x.kind) { return false; } + if self.matches_by_doc_alias(x.def_id) { + return true; + } match lev_distance_with_substrings(name.as_str(), x.name.as_str(), max_dist) { Some(d) => d > 0, diff --git a/compiler/rustc_hir_typeck/src/method/suggest.rs b/compiler/rustc_hir_typeck/src/method/suggest.rs index 2e1fc4c38b5..7a2791b11bf 100644 --- a/compiler/rustc_hir_typeck/src/method/suggest.rs +++ b/compiler/rustc_hir_typeck/src/method/suggest.rs @@ -262,7 +262,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { let ty_str = with_forced_trimmed_paths!(self.ty_to_string(rcvr_ty)); let is_method = mode == Mode::MethodCall; let unsatisfied_predicates = &no_match_data.unsatisfied_predicates; - let lev_candidate = no_match_data.lev_candidate; + let similar_candidate = no_match_data.similar_candidate; let item_kind = if is_method { "method" } else if rcvr_ty.is_enum() { @@ -352,7 +352,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { let ty_span = match rcvr_ty.kind() { ty::Param(param_type) => { - Some(param_type.span_from_generics(self.tcx, self.body_id.owner.to_def_id())) + Some(param_type.span_from_generics(self.tcx, self.body_id.to_def_id())) } ty::Adt(def, _) if def.did().is_local() => Some(tcx.def_span(def.did())), _ => None, @@ -403,7 +403,6 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { args, sugg_span, ); - self.note_candidates_on_method_error( rcvr_ty, item_name, @@ -496,9 +495,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { ty::Param(_) => { // Account for `fn` items like in `issue-35677.rs` to // suggest restricting its type params. - let parent_body = - hir.body_owner(hir::BodyId { hir_id: self.body_id }); - Some(hir.get(parent_body)) + Some(hir.get_by_def_id(self.body_id)) } ty::Adt(def, _) => { def.did().as_local().map(|def_id| hir.get_by_def_id(def_id)) @@ -937,7 +934,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { // give a helping note that it has to be called as `(x.f)(...)`. if let SelfSource::MethodCall(expr) = source { if !self.suggest_calling_field_as_fn(span, rcvr_ty, expr, item_name, &mut err) - && lev_candidate.is_none() + && similar_candidate.is_none() && !custom_span_label { label_span_not_found(&mut err); @@ -1015,20 +1012,20 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { if fallback_span { err.span_label(span, msg); } - } else if let Some(lev_candidate) = lev_candidate { + } else if let Some(similar_candidate) = similar_candidate { // Don't emit a suggestion if we found an actual method // that had unsatisfied trait bounds if unsatisfied_predicates.is_empty() { - let def_kind = lev_candidate.kind.as_def_kind(); + let def_kind = similar_candidate.kind.as_def_kind(); // Methods are defined within the context of a struct and their first parameter is always self, // which represents the instance of the struct the method is being called on // Associated functions don’t take self as a parameter and // they are not methods because they don’t have an instance of the struct to work with. - if def_kind == DefKind::AssocFn && lev_candidate.fn_has_self_parameter { + if def_kind == DefKind::AssocFn && similar_candidate.fn_has_self_parameter { err.span_suggestion( span, "there is a method with a similar name", - lev_candidate.name, + similar_candidate.name, Applicability::MaybeIncorrect, ); } else { @@ -1037,9 +1034,9 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { &format!( "there is {} {} with a similar name", def_kind.article(), - def_kind.descr(lev_candidate.def_id), + def_kind.descr(similar_candidate.def_id), ), - lev_candidate.name, + similar_candidate.name, Applicability::MaybeIncorrect, ); } @@ -1343,7 +1340,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { _ => None, }); if let Some((field, field_ty)) = field_receiver { - let scope = tcx.parent_module(self.body_id); + let scope = tcx.parent_module_from_def_id(self.body_id); let is_accessible = field.vis.is_accessible_from(scope, tcx); if is_accessible { @@ -1593,7 +1590,8 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { else { return }; let map = self.infcx.tcx.hir(); - let body = map.body(rustc_hir::BodyId { hir_id: self.body_id }); + let body_id = self.tcx.hir().body_owned_by(self.body_id); + let body = map.body(body_id); struct LetVisitor<'a> { result: Option<&'a hir::Expr<'a>>, ident_name: Symbol, @@ -2195,7 +2193,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { true }); - let module_did = self.tcx.parent_module(self.body_id); + let module_did = self.tcx.parent_module_from_def_id(self.body_id); let (module, _, _) = self.tcx.hir().get_module(module_did); let span = module.spans.inject_use_span; @@ -2517,7 +2515,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { }; // Obtain the span for `param` and use it for a structured suggestion. if let Some(param) = param_type { - let generics = self.tcx.generics_of(self.body_id.owner.to_def_id()); + let generics = self.tcx.generics_of(self.body_id.to_def_id()); let type_param = generics.type_param(param, self.tcx); let hir = self.tcx.hir(); if let Some(def_id) = type_param.def_id.as_local() { diff --git a/compiler/rustc_hir_typeck/src/writeback.rs b/compiler/rustc_hir_typeck/src/writeback.rs index 30ef7f3ba29..250f4cd3f65 100644 --- a/compiler/rustc_hir_typeck/src/writeback.rs +++ b/compiler/rustc_hir_typeck/src/writeback.rs @@ -448,8 +448,11 @@ impl<'cx, 'tcx> WritebackCx<'cx, 'tcx> { assert_eq!(fcx_typeck_results.hir_owner, self.typeck_results.hir_owner); let common_hir_owner = fcx_typeck_results.hir_owner; - for (id, origin) in fcx_typeck_results.closure_kind_origins().iter() { - let hir_id = hir::HirId { owner: common_hir_owner, local_id: *id }; + let fcx_closure_kind_origins = + fcx_typeck_results.closure_kind_origins().items_in_stable_order(); + + for (local_id, origin) in fcx_closure_kind_origins { + let hir_id = hir::HirId { owner: common_hir_owner, local_id }; let place_span = origin.0; let place = self.resolve(origin.1.clone(), &place_span); self.typeck_results.closure_kind_origins_mut().insert(hir_id, (place_span, place)); @@ -458,11 +461,12 @@ impl<'cx, 'tcx> WritebackCx<'cx, 'tcx> { fn visit_coercion_casts(&mut self) { let fcx_typeck_results = self.fcx.typeck_results.borrow(); - let fcx_coercion_casts = fcx_typeck_results.coercion_casts(); + assert_eq!(fcx_typeck_results.hir_owner, self.typeck_results.hir_owner); + let fcx_coercion_casts = fcx_typeck_results.coercion_casts().to_sorted_stable_ord(); for local_id in fcx_coercion_casts { - self.typeck_results.set_coercion_cast(*local_id); + self.typeck_results.set_coercion_cast(local_id); } } @@ -471,22 +475,15 @@ impl<'cx, 'tcx> WritebackCx<'cx, 'tcx> { assert_eq!(fcx_typeck_results.hir_owner, self.typeck_results.hir_owner); let common_hir_owner = fcx_typeck_results.hir_owner; - let mut errors_buffer = Vec::new(); - for (&local_id, c_ty) in fcx_typeck_results.user_provided_types().iter() { - let hir_id = hir::HirId { owner: common_hir_owner, local_id }; - - if cfg!(debug_assertions) && c_ty.needs_infer() { - span_bug!( - hir_id.to_span(self.fcx.tcx), - "writeback: `{:?}` has inference variables", - c_ty - ); - }; + if self.rustc_dump_user_substs { + let sorted_user_provided_types = + fcx_typeck_results.user_provided_types().items_in_stable_order(); - self.typeck_results.user_provided_types_mut().insert(hir_id, *c_ty); + let mut errors_buffer = Vec::new(); + for (local_id, c_ty) in sorted_user_provided_types { + let hir_id = hir::HirId { owner: common_hir_owner, local_id }; - if let ty::UserType::TypeOf(_, user_substs) = c_ty.value { - if self.rustc_dump_user_substs { + if let ty::UserType::TypeOf(_, user_substs) = c_ty.value { // This is a unit-testing mechanism. let span = self.tcx().hir().span(hir_id); // We need to buffer the errors in order to guarantee a consistent @@ -498,31 +495,49 @@ impl<'cx, 'tcx> WritebackCx<'cx, 'tcx> { err.buffer(&mut errors_buffer); } } - } - if !errors_buffer.is_empty() { - errors_buffer.sort_by_key(|diag| diag.span.primary_span()); - for mut diag in errors_buffer { - self.tcx().sess.diagnostic().emit_diagnostic(&mut diag); + if !errors_buffer.is_empty() { + errors_buffer.sort_by_key(|diag| diag.span.primary_span()); + for mut diag in errors_buffer { + self.tcx().sess.diagnostic().emit_diagnostic(&mut diag); + } } } + + self.typeck_results.user_provided_types_mut().extend( + fcx_typeck_results.user_provided_types().items().map(|(local_id, c_ty)| { + let hir_id = hir::HirId { owner: common_hir_owner, local_id }; + + if cfg!(debug_assertions) && c_ty.needs_infer() { + span_bug!( + hir_id.to_span(self.fcx.tcx), + "writeback: `{:?}` has inference variables", + c_ty + ); + }; + + (hir_id, *c_ty) + }), + ); } fn visit_user_provided_sigs(&mut self) { let fcx_typeck_results = self.fcx.typeck_results.borrow(); assert_eq!(fcx_typeck_results.hir_owner, self.typeck_results.hir_owner); - for (&def_id, c_sig) in fcx_typeck_results.user_provided_sigs.iter() { - if cfg!(debug_assertions) && c_sig.needs_infer() { - span_bug!( - self.fcx.tcx.def_span(def_id), - "writeback: `{:?}` has inference variables", - c_sig - ); - }; - - self.typeck_results.user_provided_sigs.insert(def_id, *c_sig); - } + self.typeck_results.user_provided_sigs.extend( + fcx_typeck_results.user_provided_sigs.items().map(|(&def_id, c_sig)| { + if cfg!(debug_assertions) && c_sig.needs_infer() { + span_bug!( + self.fcx.tcx.def_span(def_id), + "writeback: `{:?}` has inference variables", + c_sig + ); + }; + + (def_id, *c_sig) + }), + ); } fn visit_generator_interior_types(&mut self) { @@ -641,7 +656,9 @@ impl<'cx, 'tcx> WritebackCx<'cx, 'tcx> { assert_eq!(fcx_typeck_results.hir_owner, self.typeck_results.hir_owner); let common_hir_owner = fcx_typeck_results.hir_owner; - for (&local_id, &fn_sig) in fcx_typeck_results.liberated_fn_sigs().iter() { + let fcx_liberated_fn_sigs = fcx_typeck_results.liberated_fn_sigs().items_in_stable_order(); + + for (local_id, &fn_sig) in fcx_liberated_fn_sigs { let hir_id = hir::HirId { owner: common_hir_owner, local_id }; let fn_sig = self.resolve(fn_sig, &hir_id); self.typeck_results.liberated_fn_sigs_mut().insert(hir_id, fn_sig); @@ -653,7 +670,9 @@ impl<'cx, 'tcx> WritebackCx<'cx, 'tcx> { assert_eq!(fcx_typeck_results.hir_owner, self.typeck_results.hir_owner); let common_hir_owner = fcx_typeck_results.hir_owner; - for (&local_id, ftys) in fcx_typeck_results.fru_field_types().iter() { + let fcx_fru_field_types = fcx_typeck_results.fru_field_types().items_in_stable_order(); + + for (local_id, ftys) in fcx_fru_field_types { let hir_id = hir::HirId { owner: common_hir_owner, local_id }; let ftys = self.resolve(ftys.clone(), &hir_id); self.typeck_results.fru_field_types_mut().insert(hir_id, ftys); diff --git a/compiler/rustc_index/src/vec.rs b/compiler/rustc_index/src/vec.rs index c18a911b2fb..68cdc6d7711 100644 --- a/compiler/rustc_index/src/vec.rs +++ b/compiler/rustc_index/src/vec.rs @@ -207,7 +207,12 @@ impl<I: Idx, T> IndexVec<I, T> { &'a mut self, range: R, ) -> impl Iterator<Item = (I, T)> + 'a { - self.raw.drain(range).enumerate().map(|(n, t)| (I::new(n), t)) + let begin = match range.start_bound() { + std::ops::Bound::Included(i) => *i, + std::ops::Bound::Excluded(i) => i.checked_add(1).unwrap(), + std::ops::Bound::Unbounded => 0, + }; + self.raw.drain(range).enumerate().map(move |(n, t)| (I::new(begin + n), t)) } #[inline] diff --git a/compiler/rustc_infer/src/errors/mod.rs b/compiler/rustc_infer/src/errors/mod.rs index 033a1842edb..8bf3a160abb 100644 --- a/compiler/rustc_infer/src/errors/mod.rs +++ b/compiler/rustc_infer/src/errors/mod.rs @@ -927,6 +927,8 @@ pub struct ButNeedsToSatisfy { #[subdiagnostic] pub req_introduces_loc: Option<ReqIntroducedLocations>, + pub has_param_name: bool, + pub param_name: String, pub spans_empty: bool, pub has_lifetime: bool, pub lifetime: String, diff --git a/compiler/rustc_infer/src/infer/error_reporting/mod.rs b/compiler/rustc_infer/src/infer/error_reporting/mod.rs index 28fd03b878b..79704b6adf7 100644 --- a/compiler/rustc_infer/src/infer/error_reporting/mod.rs +++ b/compiler/rustc_infer/src/infer/error_reporting/mod.rs @@ -1841,19 +1841,12 @@ impl<'tcx> TypeErrCtxt<'_, 'tcx> { self.suggest_as_ref_where_appropriate(span, &exp_found, diag); self.suggest_accessing_field_where_appropriate(cause, &exp_found, diag); self.suggest_await_on_expect_found(cause, span, &exp_found, diag); + self.suggest_function_pointers(cause, span, &exp_found, diag); } } - // In some (most?) cases cause.body_id points to actual body, but in some cases - // it's an actual definition. According to the comments (e.g. in - // rustc_hir_analysis/check/compare_impl_item.rs:compare_predicate_entailment) the latter - // is relied upon by some other code. This might (or might not) need cleanup. - let body_owner_def_id = - self.tcx.hir().opt_local_def_id(cause.body_id).unwrap_or_else(|| { - self.tcx.hir().body_owner_def_id(hir::BodyId { hir_id: cause.body_id }) - }); self.check_and_note_conflicting_crates(diag, terr); - self.tcx.note_and_explain_type_err(diag, terr, cause, span, body_owner_def_id.to_def_id()); + self.tcx.note_and_explain_type_err(diag, terr, cause, span, cause.body_id.to_def_id()); if let Some(ValuePairs::PolyTraitRefs(exp_found)) = values && let ty::Closure(def_id, _) = exp_found.expected.skip_binder().self_ty().kind() @@ -2585,7 +2578,7 @@ impl<'tcx> TypeErrCtxt<'_, 'tcx> { /// with the other type. A TyVar inference type is compatible with any type, and an IntVar or /// FloatVar inference type are compatible with themselves or their concrete types (Int and /// Float types, respectively). When comparing two ADTs, these rules apply recursively. - pub fn same_type_modulo_infer(&self, a: Ty<'tcx>, b: Ty<'tcx>) -> bool { + pub fn same_type_modulo_infer<T: relate::Relate<'tcx>>(&self, a: T, b: T) -> bool { let (a, b) = self.resolve_vars_if_possible((a, b)); SameTypeModuloInfer(self).relate(a, b).is_ok() } diff --git a/compiler/rustc_infer/src/infer/error_reporting/nice_region_error/static_impl_trait.rs b/compiler/rustc_infer/src/infer/error_reporting/nice_region_error/static_impl_trait.rs index 49ad3ce50b8..6a463583dfb 100644 --- a/compiler/rustc_infer/src/infer/error_reporting/nice_region_error/static_impl_trait.rs +++ b/compiler/rustc_infer/src/infer/error_reporting/nice_region_error/static_impl_trait.rs @@ -98,6 +98,7 @@ impl<'a, 'tcx> NiceRegionError<'a, 'tcx> { let sp = var_origin.span(); let return_sp = sub_origin.span(); let param = self.find_param_with_region(*sup_r, *sub_r)?; + let simple_ident = param.param.pat.simple_ident(); let lifetime_name = if sup_r.has_name() { sup_r.to_string() } else { "'_".to_owned() }; let (mention_influencer, influencer_point) = @@ -187,7 +188,9 @@ impl<'a, 'tcx> NiceRegionError<'a, 'tcx> { req_introduces_loc: subdiag, has_lifetime: sup_r.has_name(), - lifetime: sup_r.to_string(), + lifetime: lifetime_name.clone(), + has_param_name: simple_ident.is_some(), + param_name: simple_ident.map(|x| x.to_string()).unwrap_or_default(), spans_empty, bound, }; diff --git a/compiler/rustc_infer/src/infer/error_reporting/suggest.rs b/compiler/rustc_infer/src/infer/error_reporting/suggest.rs index 5b02956a106..eb7bd7256c6 100644 --- a/compiler/rustc_infer/src/infer/error_reporting/suggest.rs +++ b/compiler/rustc_infer/src/infer/error_reporting/suggest.rs @@ -8,7 +8,7 @@ use rustc_middle::traits::{ StatementAsExpression, }; use rustc_middle::ty::print::with_no_trimmed_paths; -use rustc_middle::ty::{self as ty, Ty, TypeVisitable}; +use rustc_middle::ty::{self as ty, IsSuggestable, Ty, TypeVisitable}; use rustc_span::{sym, BytePos, Span}; use crate::errors::SuggAddLetForLetChains; @@ -351,6 +351,82 @@ impl<'tcx> TypeErrCtxt<'_, 'tcx> { } } + pub(super) fn suggest_function_pointers( + &self, + cause: &ObligationCause<'tcx>, + span: Span, + exp_found: &ty::error::ExpectedFound<Ty<'tcx>>, + diag: &mut Diagnostic, + ) { + debug!("suggest_function_pointers(cause={:?}, exp_found={:?})", cause, exp_found); + let ty::error::ExpectedFound { expected, found } = exp_found; + let expected_inner = expected.peel_refs(); + let found_inner = found.peel_refs(); + if !expected_inner.is_fn() || !found_inner.is_fn() { + return; + } + match (&expected_inner.kind(), &found_inner.kind()) { + (ty::FnPtr(sig), ty::FnDef(did, substs)) => { + let expected_sig = &(self.normalize_fn_sig)(*sig); + let found_sig = + &(self.normalize_fn_sig)(self.tcx.bound_fn_sig(*did).subst(self.tcx, substs)); + + let fn_name = self.tcx.def_path_str_with_substs(*did, substs); + + if !self.same_type_modulo_infer(*found_sig, *expected_sig) + || !sig.is_suggestable(self.tcx, true) + || ty::util::is_intrinsic(self.tcx, *did) + { + return; + } + + let (msg, sugg) = match (expected.is_ref(), found.is_ref()) { + (true, false) => { + let msg = "consider using a reference"; + let sug = format!("&{fn_name}"); + (msg, sug) + } + (false, true) => { + let msg = "consider removing the reference"; + let sug = format!("{fn_name}"); + (msg, sug) + } + (true, true) => { + diag.note("fn items are distinct from fn pointers"); + let msg = "consider casting to a fn pointer"; + let sug = format!("&({fn_name} as {sig})"); + (msg, sug) + } + (false, false) => { + diag.note("fn items are distinct from fn pointers"); + let msg = "consider casting to a fn pointer"; + let sug = format!("{fn_name} as {sig}"); + (msg, sug) + } + }; + diag.span_suggestion(span, msg, &sugg, Applicability::MaybeIncorrect); + } + (ty::FnDef(did1, substs1), ty::FnDef(did2, substs2)) => { + let expected_sig = + &(self.normalize_fn_sig)(self.tcx.bound_fn_sig(*did1).subst(self.tcx, substs1)); + let found_sig = + &(self.normalize_fn_sig)(self.tcx.bound_fn_sig(*did2).subst(self.tcx, substs2)); + + if self.same_type_modulo_infer(*found_sig, *expected_sig) { + diag.note( + "different fn items have unique types, even if their signatures are the same", + ); + } + } + (ty::FnDef(_, _), ty::FnPtr(_)) => { + diag.note("fn items are distinct from fn pointers"); + } + _ => { + return; + } + }; + } + pub fn should_suggest_as_ref(&self, expected: Ty<'tcx>, found: Ty<'tcx>) -> Option<&str> { if let (ty::Adt(exp_def, exp_substs), ty::Ref(_, found_ty, _)) = (expected.kind(), found.kind()) @@ -411,8 +487,7 @@ impl<'tcx> TypeErrCtxt<'_, 'tcx> { span: Span, ) { let hir = self.tcx.hir(); - let fn_hir_id = hir.parent_id(cause.body_id); - if let Some(node) = self.tcx.hir().find(fn_hir_id) && + if let Some(node) = self.tcx.hir().find_by_def_id(cause.body_id) && let hir::Node::Item(hir::Item { kind: hir::ItemKind::Fn(_sig, _, body_id), .. }) = node { diff --git a/compiler/rustc_infer/src/infer/lexical_region_resolve/mod.rs b/compiler/rustc_infer/src/infer/lexical_region_resolve/mod.rs index 0b478f4cf5c..ce8aec8044b 100644 --- a/compiler/rustc_infer/src/infer/lexical_region_resolve/mod.rs +++ b/compiler/rustc_infer/src/infer/lexical_region_resolve/mod.rs @@ -251,7 +251,7 @@ impl<'cx, 'tcx> LexicalResolver<'cx, 'tcx> { VarValue::Empty(a_universe) => { let b_data = var_values.value_mut(b_vid); - let changed = (|| match *b_data { + let changed = match *b_data { VarValue::Empty(b_universe) => { // Empty regions are ordered according to the universe // they are associated with. @@ -280,20 +280,20 @@ impl<'cx, 'tcx> LexicalResolver<'cx, 'tcx> { }; if lub == cur_region { - return false; + false + } else { + debug!( + "Expanding value of {:?} from {:?} to {:?}", + b_vid, cur_region, lub + ); + + *b_data = VarValue::Value(lub); + true } - - debug!( - "Expanding value of {:?} from {:?} to {:?}", - b_vid, cur_region, lub - ); - - *b_data = VarValue::Value(lub); - true } VarValue::ErrorValue => false, - })(); + }; if changed { changes.push(b_vid); diff --git a/compiler/rustc_infer/src/infer/opaque_types.rs b/compiler/rustc_infer/src/infer/opaque_types.rs index e22ba9785e1..b68b0baaa40 100644 --- a/compiler/rustc_infer/src/infer/opaque_types.rs +++ b/compiler/rustc_infer/src/infer/opaque_types.rs @@ -3,7 +3,7 @@ use crate::infer::{DefiningAnchor, InferCtxt, InferOk}; use crate::traits; use hir::def::DefKind; use hir::def_id::{DefId, LocalDefId}; -use hir::{HirId, OpaqueTyOrigin}; +use hir::OpaqueTyOrigin; use rustc_data_structures::sync::Lrc; use rustc_data_structures::vec_map::VecMap; use rustc_hir as hir; @@ -48,7 +48,7 @@ impl<'tcx> InferCtxt<'tcx> { pub fn replace_opaque_types_with_inference_vars<T: TypeFoldable<'tcx>>( &self, value: T, - body_id: HirId, + body_id: LocalDefId, span: Span, param_env: ty::ParamEnv<'tcx>, ) -> InferOk<'tcx, T> { @@ -479,7 +479,7 @@ where } ty::Alias(ty::Opaque, ty::AliasTy { def_id, ref substs, .. }) => { - // Skip lifetime paramters that are not captures. + // Skip lifetime parameters that are not captures. let variances = self.tcx.variances_of(*def_id); for (v, s) in std::iter::zip(variances, substs.iter()) { @@ -492,7 +492,7 @@ where ty::Alias(ty::Projection, proj) if self.tcx.def_kind(proj.def_id) == DefKind::ImplTraitPlaceholder => { - // Skip lifetime paramters that are not captures. + // Skip lifetime parameters that are not captures. let variances = self.tcx.variances_of(proj.def_id); for (v, s) in std::iter::zip(variances, proj.substs.iter()) { diff --git a/compiler/rustc_infer/src/traits/engine.rs b/compiler/rustc_infer/src/traits/engine.rs index d3519f4b37b..fcde00056cb 100644 --- a/compiler/rustc_infer/src/traits/engine.rs +++ b/compiler/rustc_infer/src/traits/engine.rs @@ -1,6 +1,5 @@ use crate::infer::InferCtxt; use crate::traits::Obligation; -use rustc_data_structures::fx::FxHashMap; use rustc_hir::def_id::DefId; use rustc_middle::ty::{self, ToPredicate, Ty}; @@ -42,8 +41,6 @@ pub trait TraitEngine<'tcx>: 'tcx { fn select_where_possible(&mut self, infcx: &InferCtxt<'tcx>) -> Vec<FulfillmentError<'tcx>>; fn pending_obligations(&self) -> Vec<PredicateObligation<'tcx>>; - - fn relationships(&mut self) -> &mut FxHashMap<ty::TyVid, ty::FoundRelationships>; } pub trait TraitEngineExt<'tcx> { diff --git a/compiler/rustc_infer/src/traits/mod.rs b/compiler/rustc_infer/src/traits/mod.rs index 026713b6a28..3a82899660b 100644 --- a/compiler/rustc_infer/src/traits/mod.rs +++ b/compiler/rustc_infer/src/traits/mod.rs @@ -8,6 +8,7 @@ mod project; mod structural_impls; pub mod util; +use hir::def_id::LocalDefId; use rustc_hir as hir; use rustc_middle::ty::error::{ExpectedFound, TypeError}; use rustc_middle::ty::{self, Const, ToPredicate, Ty, TyCtxt}; @@ -146,7 +147,7 @@ impl<'tcx, O> Obligation<'tcx, O> { pub fn misc( tcx: TyCtxt<'tcx>, span: Span, - body_id: hir::HirId, + body_id: LocalDefId, param_env: ty::ParamEnv<'tcx>, trait_ref: impl ToPredicate<'tcx, O>, ) -> Obligation<'tcx, O> { diff --git a/compiler/rustc_interface/src/lib.rs b/compiler/rustc_interface/src/lib.rs index 542b638bbd7..82bc4770b6b 100644 --- a/compiler/rustc_interface/src/lib.rs +++ b/compiler/rustc_interface/src/lib.rs @@ -3,6 +3,7 @@ #![feature(internal_output_capture)] #![feature(thread_spawn_unchecked)] #![feature(once_cell)] +#![feature(try_blocks)] #![recursion_limit = "256"] #![allow(rustc::potential_query_instability)] #![deny(rustc::untranslatable_diagnostic)] diff --git a/compiler/rustc_interface/src/passes.rs b/compiler/rustc_interface/src/passes.rs index 2fa846b7e4b..379a76528f3 100644 --- a/compiler/rustc_interface/src/passes.rs +++ b/compiler/rustc_interface/src/passes.rs @@ -558,7 +558,7 @@ fn write_out_deps( } let deps_filename = outputs.path(OutputType::DepInfo); - let result = (|| -> io::Result<()> { + let result: io::Result<()> = try { // Build a list of files used to compile the output and // write Makefile-compatible dependency rules let mut files: Vec<String> = sess @@ -645,9 +645,7 @@ fn write_out_deps( writeln!(file)?; } } - - Ok(()) - })(); + }; match result { Ok(_) => { diff --git a/compiler/rustc_lint/src/builtin.rs b/compiler/rustc_lint/src/builtin.rs index 6f445426df7..f27fd90c55c 100644 --- a/compiler/rustc_lint/src/builtin.rs +++ b/compiler/rustc_lint/src/builtin.rs @@ -72,7 +72,7 @@ use rustc_span::symbol::{kw, sym, Ident, Symbol}; use rustc_span::{BytePos, InnerSpan, Span}; use rustc_target::abi::{Abi, VariantIdx}; use rustc_trait_selection::infer::{InferCtxtExt, TyCtxtInferExt}; -use rustc_trait_selection::traits::{self, misc::can_type_implement_copy, EvaluationResult}; +use rustc_trait_selection::traits::{self, misc::type_allowed_to_implement_copy}; use crate::nonstandard_style::{method_context, MethodLateContext}; @@ -709,12 +709,14 @@ impl<'tcx> LateLintPass<'tcx> for MissingCopyImplementations { // We shouldn't recommend implementing `Copy` on stateful things, // such as iterators. - if let Some(iter_trait) = cx.tcx.get_diagnostic_item(sym::Iterator) { - if cx.tcx.infer_ctxt().build().type_implements_trait(iter_trait, [ty], param_env) - == EvaluationResult::EvaluatedToOk - { - return; - } + if let Some(iter_trait) = cx.tcx.get_diagnostic_item(sym::Iterator) + && cx.tcx + .infer_ctxt() + .build() + .type_implements_trait(iter_trait, [ty], param_env) + .must_apply_modulo_regions() + { + return; } // Default value of clippy::trivially_copy_pass_by_ref @@ -726,11 +728,11 @@ impl<'tcx> LateLintPass<'tcx> for MissingCopyImplementations { } } - if can_type_implement_copy( + if type_allowed_to_implement_copy( cx.tcx, param_env, ty, - traits::ObligationCause::misc(item.span, item.hir_id()), + traits::ObligationCause::misc(item.span, item.owner_id.def_id), ) .is_ok() { diff --git a/compiler/rustc_lint/src/context.rs b/compiler/rustc_lint/src/context.rs index c9b9a622571..8046cc21cea 100644 --- a/compiler/rustc_lint/src/context.rs +++ b/compiler/rustc_lint/src/context.rs @@ -825,21 +825,24 @@ pub trait LintContext: Sized { debug!(?param_span, ?use_span, ?deletion_span); db.span_label(param_span, "this lifetime..."); db.span_label(use_span, "...is used only here"); - let msg = "elide the single-use lifetime"; - let (use_span, replace_lt) = if elide { - let use_span = sess.source_map().span_extend_while( - use_span, - char::is_whitespace, - ).unwrap_or(use_span); - (use_span, String::new()) - } else { - (use_span, "'_".to_owned()) - }; - db.multipart_suggestion( - msg, - vec![(deletion_span, String::new()), (use_span, replace_lt)], - Applicability::MachineApplicable, - ); + if let Some(deletion_span) = deletion_span { + let msg = "elide the single-use lifetime"; + let (use_span, replace_lt) = if elide { + let use_span = sess.source_map().span_extend_while( + use_span, + char::is_whitespace, + ).unwrap_or(use_span); + (use_span, String::new()) + } else { + (use_span, "'_".to_owned()) + }; + debug!(?deletion_span, ?use_span); + db.multipart_suggestion( + msg, + vec![(deletion_span, String::new()), (use_span, replace_lt)], + Applicability::MachineApplicable, + ); + } }, BuiltinLintDiagnostics::SingleUseLifetime { param_span: _, @@ -847,12 +850,14 @@ pub trait LintContext: Sized { deletion_span, } => { debug!(?deletion_span); - db.span_suggestion( - deletion_span, - "elide the unused lifetime", - "", - Applicability::MachineApplicable, - ); + if let Some(deletion_span) = deletion_span { + db.span_suggestion( + deletion_span, + "elide the unused lifetime", + "", + Applicability::MachineApplicable, + ); + } }, BuiltinLintDiagnostics::NamedArgumentUsedPositionally{ position_sp_to_replace, position_sp_for_msg, named_arg_sp, named_arg_name, is_formatting_arg} => { db.span_label(named_arg_sp, "this named argument is referred to by position in formatting string"); diff --git a/compiler/rustc_lint/src/for_loops_over_fallibles.rs b/compiler/rustc_lint/src/for_loops_over_fallibles.rs index 5219992ee94..1add352e0c4 100644 --- a/compiler/rustc_lint/src/for_loops_over_fallibles.rs +++ b/compiler/rustc_lint/src/for_loops_over_fallibles.rs @@ -139,9 +139,10 @@ fn suggest_question_mark<'tcx>( let ty = substs.type_at(0); let infcx = cx.tcx.infer_ctxt().build(); + let body_def_id = cx.tcx.hir().body_owner_def_id(body_id); let cause = ObligationCause::new( span, - body_id.hir_id, + body_def_id, rustc_infer::traits::ObligationCauseCode::MiscObligation, ); let errors = rustc_trait_selection::traits::fully_solve_bound( diff --git a/compiler/rustc_lint_defs/src/builtin.rs b/compiler/rustc_lint_defs/src/builtin.rs index 6cdf5097083..b6481d70bc8 100644 --- a/compiler/rustc_lint_defs/src/builtin.rs +++ b/compiler/rustc_lint_defs/src/builtin.rs @@ -708,7 +708,7 @@ declare_lint! { /// /// ### Example /// - /// ```rust + /// ```rust,compile_fail /// pub enum Enum { /// Foo, /// Bar, @@ -743,7 +743,7 @@ declare_lint! { /// [identifier pattern]: https://doc.rust-lang.org/reference/patterns.html#identifier-patterns /// [path pattern]: https://doc.rust-lang.org/reference/patterns.html#path-patterns pub BINDINGS_WITH_VARIANT_NAME, - Warn, + Deny, "detects pattern bindings with the same name as one of the matched variants" } @@ -2024,6 +2024,73 @@ declare_lint! { } declare_lint! { + /// The `proc_macro_derive_resolution_fallback` lint detects proc macro + /// derives using inaccessible names from parent modules. + /// + /// ### Example + /// + /// ```rust,ignore (proc-macro) + /// // foo.rs + /// #![crate_type = "proc-macro"] + /// + /// extern crate proc_macro; + /// + /// use proc_macro::*; + /// + /// #[proc_macro_derive(Foo)] + /// pub fn foo1(a: TokenStream) -> TokenStream { + /// drop(a); + /// "mod __bar { static mut BAR: Option<Something> = None; }".parse().unwrap() + /// } + /// ``` + /// + /// ```rust,ignore (needs-dependency) + /// // bar.rs + /// #[macro_use] + /// extern crate foo; + /// + /// struct Something; + /// + /// #[derive(Foo)] + /// struct Another; + /// + /// fn main() {} + /// ``` + /// + /// This will produce: + /// + /// ```text + /// warning: cannot find type `Something` in this scope + /// --> src/main.rs:8:10 + /// | + /// 8 | #[derive(Foo)] + /// | ^^^ names from parent modules are not accessible without an explicit import + /// | + /// = note: `#[warn(proc_macro_derive_resolution_fallback)]` on by default + /// = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + /// = note: for more information, see issue #50504 <https://github.com/rust-lang/rust/issues/50504> + /// ``` + /// + /// ### Explanation + /// + /// If a proc-macro generates a module, the compiler unintentionally + /// allowed items in that module to refer to items in the crate root + /// without importing them. This is a [future-incompatible] lint to + /// transition this to a hard error in the future. See [issue #50504] for + /// more details. + /// + /// [issue #50504]: https://github.com/rust-lang/rust/issues/50504 + /// [future-incompatible]: ../index.md#future-incompatible-lints + pub PROC_MACRO_DERIVE_RESOLUTION_FALLBACK, + Deny, + "detects proc macro derives using inaccessible names from parent modules", + @future_incompatible = FutureIncompatibleInfo { + reference: "issue #83583 <https://github.com/rust-lang/rust/issues/83583>", + reason: FutureIncompatibilityReason::FutureReleaseErrorReportNow, + }; +} + +declare_lint! { /// The `macro_use_extern_crate` lint detects the use of the /// [`macro_use` attribute]. /// @@ -2948,6 +3015,7 @@ declare_lint! { "trailing semicolon in macro body used as expression", @future_incompatible = FutureIncompatibleInfo { reference: "issue #79813 <https://github.com/rust-lang/rust/issues/79813>", + reason: FutureIncompatibilityReason::FutureReleaseErrorReportNow, }; } @@ -3261,6 +3329,7 @@ declare_lint_pass! { UNSTABLE_NAME_COLLISIONS, IRREFUTABLE_LET_PATTERNS, WHERE_CLAUSES_OBJECT_SAFETY, + PROC_MACRO_DERIVE_RESOLUTION_FALLBACK, MACRO_USE_EXTERN_CRATE, MACRO_EXPANDED_MACRO_EXPORTS_ACCESSED_BY_ABSOLUTE_PATHS, ILL_FORMED_ATTRIBUTE_INPUT, diff --git a/compiler/rustc_lint_defs/src/lib.rs b/compiler/rustc_lint_defs/src/lib.rs index f4b4c5168bf..7054d1e9f10 100644 --- a/compiler/rustc_lint_defs/src/lib.rs +++ b/compiler/rustc_lint_defs/src/lib.rs @@ -6,8 +6,9 @@ extern crate rustc_macros; pub use self::Level::*; -use rustc_ast::node_id::{NodeId, NodeMap}; +use rustc_ast::node_id::NodeId; use rustc_ast::{AttrId, Attribute}; +use rustc_data_structures::fx::FxIndexMap; use rustc_data_structures::stable_hasher::{HashStable, StableHasher, ToStableHashKey}; use rustc_error_messages::{DiagnosticMessage, MultiSpan}; use rustc_hir::HashStableContext; @@ -502,7 +503,7 @@ pub enum BuiltinLintDiagnostics { param_span: Span, /// Span of the code that should be removed when eliding this lifetime. /// This span should include leading or trailing comma. - deletion_span: Span, + deletion_span: Option<Span>, /// Span of the single use, or None if the lifetime is never used. /// If true, the lifetime will be fully elided. use_span: Option<(Span, bool)>, @@ -544,7 +545,7 @@ pub struct BufferedEarlyLint { #[derive(Default)] pub struct LintBuffer { - pub map: NodeMap<Vec<BufferedEarlyLint>>, + pub map: FxIndexMap<NodeId, Vec<BufferedEarlyLint>>, } impl LintBuffer { diff --git a/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp b/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp index 8f94e8a4ab2..87b0e1273eb 100644 --- a/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp +++ b/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp @@ -1349,18 +1349,16 @@ extern "C" LLVMTypeKind LLVMRustGetTypeKind(LLVMTypeRef Ty) { return LLVMBFloatTypeKind; case Type::X86_AMXTyID: return LLVMX86_AMXTypeKind; -#if LLVM_VERSION_GE(15, 0) && LLVM_VERSION_LT(16, 0) - case Type::DXILPointerTyID: - report_fatal_error("Rust does not support DirectX typed pointers."); - break; -#endif -#if LLVM_VERSION_GE(16, 0) - case Type::TypedPointerTyID: - report_fatal_error("Rust does not support typed pointers."); - break; -#endif + default: + { + std::string error; + llvm::raw_string_ostream stream(error); + stream << "Rust does not support the TypeID: " << unwrap(Ty)->getTypeID() + << " for the type: " << *unwrap(Ty); + stream.flush(); + report_fatal_error(error.c_str()); + } } - report_fatal_error("Unhandled TypeID."); } DEFINE_SIMPLE_CONVERSION_FUNCTIONS(SMDiagnostic, LLVMSMDiagnosticRef) diff --git a/compiler/rustc_metadata/Cargo.toml b/compiler/rustc_metadata/Cargo.toml index 6d85103c9d1..bee5c8541d6 100644 --- a/compiler/rustc_metadata/Cargo.toml +++ b/compiler/rustc_metadata/Cargo.toml @@ -6,6 +6,7 @@ edition = "2021" [lib] [dependencies] +bitflags = "1.2.1" libloading = "0.7.1" odht = { version = "0.3.1", features = ["nightly"] } snap = "1" diff --git a/compiler/rustc_metadata/src/rmeta/decoder.rs b/compiler/rustc_metadata/src/rmeta/decoder.rs index 143d8f2f1e1..bb2dd290c6d 100644 --- a/compiler/rustc_metadata/src/rmeta/decoder.rs +++ b/compiler/rustc_metadata/src/rmeta/decoder.rs @@ -985,7 +985,7 @@ impl<'a, 'tcx> CrateMetadataRef<'a> { let vis = self.get_visibility(id); let span = self.get_span(id, sess); let macro_rules = match kind { - DefKind::Macro(..) => self.root.tables.macro_rules.get(self, id).is_some(), + DefKind::Macro(..) => self.root.tables.is_macro_rules.get(self, id), _ => false, }; @@ -1283,7 +1283,7 @@ impl<'a, 'tcx> CrateMetadataRef<'a> { fn get_macro(self, id: DefIndex, sess: &Session) -> ast::MacroDef { match self.def_kind(id) { DefKind::Macro(_) => { - let macro_rules = self.root.tables.macro_rules.get(self, id).is_some(); + let macro_rules = self.root.tables.is_macro_rules.get(self, id); let body = self.root.tables.macro_definition.get(self, id).unwrap().decode((self, sess)); ast::MacroDef { macro_rules, body: ast::ptr::P(body) } @@ -1594,12 +1594,12 @@ impl<'a, 'tcx> CrateMetadataRef<'a> { }) } - fn get_may_have_doc_links(self, index: DefIndex) -> bool { - self.root.tables.may_have_doc_links.get(self, index).is_some() + fn get_attr_flags(self, index: DefIndex) -> AttrFlags { + self.root.tables.attr_flags.get(self, index) } fn get_is_intrinsic(self, index: DefIndex) -> bool { - self.root.tables.is_intrinsic.get(self, index).is_some() + self.root.tables.is_intrinsic.get(self, index) } } diff --git a/compiler/rustc_metadata/src/rmeta/decoder/cstore_impl.rs b/compiler/rustc_metadata/src/rmeta/decoder/cstore_impl.rs index 0d924f27c21..eebc2f21dfe 100644 --- a/compiler/rustc_metadata/src/rmeta/decoder/cstore_impl.rs +++ b/compiler/rustc_metadata/src/rmeta/decoder/cstore_impl.rs @@ -1,6 +1,7 @@ use crate::creader::{CStore, LoadedMacro}; use crate::foreign_modules; use crate::native_libs; +use crate::rmeta::AttrFlags; use rustc_ast as ast; use rustc_attr::Deprecation; @@ -225,12 +226,7 @@ provide! { tcx, def_id, other, cdata, deduced_param_attrs => { table } is_type_alias_impl_trait => { debug_assert_eq!(tcx.def_kind(def_id), DefKind::OpaqueTy); - cdata - .root - .tables - .is_type_alias_impl_trait - .get(cdata, def_id.index) - .is_some() + cdata.root.tables.is_type_alias_impl_trait.get(cdata, def_id.index) } collect_return_position_impl_trait_in_trait_tys => { Ok(cdata @@ -338,6 +334,7 @@ provide! { tcx, def_id, other, cdata, crate_extern_paths => { cdata.source().paths().cloned().collect() } expn_that_defined => { cdata.get_expn_that_defined(def_id.index, tcx.sess) } generator_diagnostic_data => { cdata.get_generator_diagnostic_data(tcx, def_id.index) } + is_doc_hidden => { cdata.get_attr_flags(def_id.index).contains(AttrFlags::IS_DOC_HIDDEN) } } pub(in crate::rmeta) fn provide(providers: &mut Providers) { @@ -391,7 +388,7 @@ pub(in crate::rmeta) fn provide(providers: &mut Providers) { // keys from the former. // This is a rudimentary check that does not catch all cases, // just the easiest. - let mut fallback_map: DefIdMap<DefId> = Default::default(); + let mut fallback_map: Vec<(DefId, DefId)> = Default::default(); // Issue 46112: We want the map to prefer the shortest // paths when reporting the path to an item. Therefore we @@ -421,12 +418,12 @@ pub(in crate::rmeta) fn provide(providers: &mut Providers) { if let Some(def_id) = child.res.opt_def_id() { if child.ident.name == kw::Underscore { - fallback_map.insert(def_id, parent); + fallback_map.push((def_id, parent)); return; } - if ty::util::is_doc_hidden(tcx, parent) { - fallback_map.insert(def_id, parent); + if tcx.is_doc_hidden(parent) { + fallback_map.push((def_id, parent)); return; } @@ -460,6 +457,7 @@ pub(in crate::rmeta) fn provide(providers: &mut Providers) { // Fill in any missing entries with the less preferable path. // If this path re-exports the child as `_`, we still use this // path in a diagnostic that suggests importing `::*`. + for (child, parent) in fallback_map { visible_parent_map.entry(child).or_insert(parent); } @@ -630,7 +628,9 @@ impl CStore { } pub fn may_have_doc_links_untracked(&self, def_id: DefId) -> bool { - self.get_crate_data(def_id.krate).get_may_have_doc_links(def_id.index) + self.get_crate_data(def_id.krate) + .get_attr_flags(def_id.index) + .contains(AttrFlags::MAY_HAVE_DOC_LINKS) } } diff --git a/compiler/rustc_metadata/src/rmeta/encoder.rs b/compiler/rustc_metadata/src/rmeta/encoder.rs index ab2ad79b876..97f0457ba71 100644 --- a/compiler/rustc_metadata/src/rmeta/encoder.rs +++ b/compiler/rustc_metadata/src/rmeta/encoder.rs @@ -483,7 +483,7 @@ impl<'a, 'tcx> EncodeContext<'a, 'tcx> { self.lazy(DefPathHashMapRef::BorrowedFromTcx(self.tcx.def_path_hash_to_def_index_map())) } - fn encode_source_map(&mut self) -> LazyTable<u32, LazyValue<rustc_span::SourceFile>> { + fn encode_source_map(&mut self) -> LazyTable<u32, Option<LazyValue<rustc_span::SourceFile>>> { let source_map = self.tcx.sess.source_map(); let all_source_files = source_map.files(); @@ -1111,15 +1111,26 @@ impl<'a, 'tcx> EncodeContext<'a, 'tcx> { let tcx = self.tcx; let mut is_public: Option<bool> = None; - let mut attrs = tcx - .hir() - .attrs(tcx.hir().local_def_id_to_hir_id(def_id)) + let hir_attrs = tcx.hir().attrs(tcx.hir().local_def_id_to_hir_id(def_id)); + let mut attrs = hir_attrs .iter() .filter(move |attr| should_encode_attr(tcx, attr, def_id, &mut is_public)); record_array!(self.tables.attributes[def_id.to_def_id()] <- attrs.clone()); + let mut attr_flags = AttrFlags::empty(); if attrs.any(|attr| attr.may_have_doc_links()) { - self.tables.may_have_doc_links.set(def_id.local_def_index, ()); + attr_flags |= AttrFlags::MAY_HAVE_DOC_LINKS; + } + if hir_attrs + .iter() + .filter(|attr| attr.has_name(sym::doc)) + .filter_map(|attr| attr.meta_item_list()) + .any(|items| items.iter().any(|item| item.has_name(sym::hidden))) + { + attr_flags |= AttrFlags::IS_DOC_HIDDEN; + } + if !attr_flags.is_empty() { + self.tables.attr_flags.set_nullable(def_id.local_def_index, attr_flags); } } @@ -1187,8 +1198,11 @@ impl<'a, 'tcx> EncodeContext<'a, 'tcx> { record!(self.tables.trait_impl_trait_tys[def_id] <- table); } } - let inherent_impls = tcx.crate_inherent_impls(()); - for (def_id, implementations) in inherent_impls.inherent_impls.iter() { + let inherent_impls = tcx.with_stable_hashing_context(|hcx| { + tcx.crate_inherent_impls(()).inherent_impls.to_sorted(&hcx, true) + }); + + for (def_id, implementations) in inherent_impls { if implementations.is_empty() { continue; } @@ -1373,7 +1387,7 @@ impl<'a, 'tcx> EncodeContext<'a, 'tcx> { if impl_item.kind == ty::AssocKind::Fn { record!(self.tables.fn_sig[def_id] <- tcx.fn_sig(def_id)); if tcx.is_intrinsic(def_id) { - self.tables.is_intrinsic.set(def_id.index, ()); + self.tables.is_intrinsic.set_nullable(def_id.index, true); } } } @@ -1505,7 +1519,7 @@ impl<'a, 'tcx> EncodeContext<'a, 'tcx> { } hir::ItemKind::Macro(ref macro_def, _) => { if macro_def.macro_rules { - self.tables.macro_rules.set(def_id.index, ()); + self.tables.is_macro_rules.set_nullable(def_id.index, true); } record!(self.tables.macro_definition[def_id] <- &*macro_def.body); } @@ -1515,7 +1529,7 @@ impl<'a, 'tcx> EncodeContext<'a, 'tcx> { hir::ItemKind::OpaqueTy(ref opaque) => { self.encode_explicit_item_bounds(def_id); if matches!(opaque.origin, hir::OpaqueTyOrigin::TyAlias) { - self.tables.is_type_alias_impl_trait.set(def_id.index, ()); + self.tables.is_type_alias_impl_trait.set_nullable(def_id.index, true); } } hir::ItemKind::Enum(..) => { @@ -1622,7 +1636,7 @@ impl<'a, 'tcx> EncodeContext<'a, 'tcx> { if let hir::ItemKind::Fn(..) = item.kind { record!(self.tables.fn_sig[def_id] <- tcx.fn_sig(def_id)); if tcx.is_intrinsic(def_id) { - self.tables.is_intrinsic.set(def_id.index, ()); + self.tables.is_intrinsic.set_nullable(def_id.index, true); } } if let hir::ItemKind::Impl { .. } = item.kind { @@ -2024,7 +2038,7 @@ impl<'a, 'tcx> EncodeContext<'a, 'tcx> { } if let hir::ForeignItemKind::Fn(..) = nitem.kind { if tcx.is_intrinsic(def_id) { - self.tables.is_intrinsic.set(def_id.index, ()); + self.tables.is_intrinsic.set_nullable(def_id.index, true); } } } diff --git a/compiler/rustc_metadata/src/rmeta/mod.rs b/compiler/rustc_metadata/src/rmeta/mod.rs index 5066dbbb90f..698b2ebc473 100644 --- a/compiler/rustc_metadata/src/rmeta/mod.rs +++ b/compiler/rustc_metadata/src/rmeta/mod.rs @@ -185,9 +185,9 @@ enum LazyState { Previous(NonZeroUsize), } -type SyntaxContextTable = LazyTable<u32, LazyValue<SyntaxContextData>>; -type ExpnDataTable = LazyTable<ExpnIndex, LazyValue<ExpnData>>; -type ExpnHashTable = LazyTable<ExpnIndex, LazyValue<ExpnHash>>; +type SyntaxContextTable = LazyTable<u32, Option<LazyValue<SyntaxContextData>>>; +type ExpnDataTable = LazyTable<ExpnIndex, Option<LazyValue<ExpnData>>>; +type ExpnHashTable = LazyTable<ExpnIndex, Option<LazyValue<ExpnHash>>>; #[derive(MetadataEncodable, MetadataDecodable)] pub(crate) struct ProcMacroData { @@ -253,7 +253,7 @@ pub(crate) struct CrateRoot { def_path_hash_map: LazyValue<DefPathHashMapRef<'static>>, - source_map: LazyTable<u32, LazyValue<rustc_span::SourceFile>>, + source_map: LazyTable<u32, Option<LazyValue<rustc_span::SourceFile>>>, compiler_builtins: bool, needs_allocator: bool, @@ -315,21 +315,27 @@ pub(crate) struct IncoherentImpls { /// Define `LazyTables` and `TableBuilders` at the same time. macro_rules! define_tables { - ($($name:ident: Table<$IDX:ty, $T:ty>),+ $(,)?) => { + ( + - nullable: $($name1:ident: Table<$IDX1:ty, $T1:ty>,)+ + - optional: $($name2:ident: Table<$IDX2:ty, $T2:ty>,)+ + ) => { #[derive(MetadataEncodable, MetadataDecodable)] pub(crate) struct LazyTables { - $($name: LazyTable<$IDX, $T>),+ + $($name1: LazyTable<$IDX1, $T1>,)+ + $($name2: LazyTable<$IDX2, Option<$T2>>,)+ } #[derive(Default)] struct TableBuilders { - $($name: TableBuilder<$IDX, $T>),+ + $($name1: TableBuilder<$IDX1, $T1>,)+ + $($name2: TableBuilder<$IDX2, Option<$T2>>,)+ } impl TableBuilders { fn encode(&self, buf: &mut FileEncoder) -> LazyTables { LazyTables { - $($name: self.$name.encode(buf)),+ + $($name1: self.$name1.encode(buf),)+ + $($name2: self.$name2.encode(buf),)+ } } } @@ -337,9 +343,15 @@ macro_rules! define_tables { } define_tables! { +- nullable: + is_intrinsic: Table<DefIndex, bool>, + is_macro_rules: Table<DefIndex, bool>, + is_type_alias_impl_trait: Table<DefIndex, bool>, + attr_flags: Table<DefIndex, AttrFlags>, + +- optional: attributes: Table<DefIndex, LazyArray<ast::Attribute>>, children: Table<DefIndex, LazyArray<DefIndex>>, - opt_def_kind: Table<DefIndex, DefKind>, visibility: Table<DefIndex, LazyValue<ty::Visibility<DefIndex>>>, def_span: Table<DefIndex, LazyValue<Span>>, @@ -370,7 +382,6 @@ define_tables! { impl_parent: Table<DefIndex, RawDefId>, impl_polarity: Table<DefIndex, ty::ImplPolarity>, constness: Table<DefIndex, hir::Constness>, - is_intrinsic: Table<DefIndex, ()>, impl_defaultness: Table<DefIndex, hir::Defaultness>, // FIXME(eddyb) perhaps compute this on the fly if cheap enough? coerce_unsized_info: Table<DefIndex, LazyValue<ty::adjustment::CoerceUnsizedInfo>>, @@ -380,7 +391,6 @@ define_tables! { fn_arg_names: Table<DefIndex, LazyArray<Ident>>, generator_kind: Table<DefIndex, LazyValue<hir::GeneratorKind>>, trait_def: Table<DefIndex, LazyValue<ty::TraitDef>>, - trait_item_def_id: Table<DefIndex, RawDefId>, inherent_impls: Table<DefIndex, LazyArray<DefIndex>>, expn_that_defined: Table<DefIndex, LazyValue<ExpnId>>, @@ -395,18 +405,12 @@ define_tables! { def_path_hashes: Table<DefIndex, DefPathHash>, proc_macro_quoted_spans: Table<usize, LazyValue<Span>>, generator_diagnostic_data: Table<DefIndex, LazyValue<GeneratorDiagnosticData<'static>>>, - may_have_doc_links: Table<DefIndex, ()>, variant_data: Table<DefIndex, LazyValue<VariantData>>, assoc_container: Table<DefIndex, ty::AssocItemContainer>, - // Slot is full when macro is macro_rules. - macro_rules: Table<DefIndex, ()>, macro_definition: Table<DefIndex, LazyValue<ast::DelimArgs>>, proc_macro: Table<DefIndex, MacroKind>, module_reexports: Table<DefIndex, LazyArray<ModChild>>, deduced_param_attrs: Table<DefIndex, LazyArray<DeducedParamAttrs>>, - // Slot is full when opaque is TAIT. - is_type_alias_impl_trait: Table<DefIndex, ()>, - trait_impl_trait_tys: Table<DefIndex, LazyValue<FxHashMap<DefId, Ty<'static>>>>, } @@ -418,6 +422,14 @@ struct VariantData { is_non_exhaustive: bool, } +bitflags::bitflags! { + #[derive(Default)] + pub struct AttrFlags: u8 { + const MAY_HAVE_DOC_LINKS = 1 << 0; + const IS_DOC_HIDDEN = 1 << 1; + } +} + // Tags used for encoding Spans: const TAG_VALID_SPAN_LOCAL: u8 = 0; const TAG_VALID_SPAN_FOREIGN: u8 = 1; @@ -440,4 +452,5 @@ trivially_parameterized_over_tcx! { IncoherentImpls, CrateRoot, CrateDep, + AttrFlags, } diff --git a/compiler/rustc_metadata/src/rmeta/table.rs b/compiler/rustc_metadata/src/rmeta/table.rs index 716655c7f14..70dbf6476e2 100644 --- a/compiler/rustc_metadata/src/rmeta/table.rs +++ b/compiler/rustc_metadata/src/rmeta/table.rs @@ -16,6 +16,7 @@ use std::num::NonZeroUsize; /// but this has no impact on safety. pub(super) trait FixedSizeEncoding: Default { /// This should be `[u8; BYTE_LEN]`; + /// Cannot use an associated `const BYTE_LEN: usize` instead due to const eval limitations. type ByteArray; fn from_bytes(b: &Self::ByteArray) -> Self; @@ -199,17 +200,31 @@ impl FixedSizeEncoding for Option<RawDefId> { } } -impl FixedSizeEncoding for Option<()> { +impl FixedSizeEncoding for AttrFlags { type ByteArray = [u8; 1]; #[inline] fn from_bytes(b: &[u8; 1]) -> Self { - (b[0] != 0).then(|| ()) + AttrFlags::from_bits_truncate(b[0]) } #[inline] fn write_to_bytes(self, b: &mut [u8; 1]) { - b[0] = self.is_some() as u8 + b[0] = self.bits(); + } +} + +impl FixedSizeEncoding for bool { + type ByteArray = [u8; 1]; + + #[inline] + fn from_bytes(b: &[u8; 1]) -> Self { + b[0] != 0 + } + + #[inline] + fn write_to_bytes(self, b: &mut [u8; 1]) { + b[0] = self as u8 } } @@ -259,44 +274,38 @@ impl<T> FixedSizeEncoding for Option<LazyArray<T>> { } /// Helper for constructing a table's serialization (also see `Table`). -pub(super) struct TableBuilder<I: Idx, T> -where - Option<T>: FixedSizeEncoding, -{ - blocks: IndexVec<I, <Option<T> as FixedSizeEncoding>::ByteArray>, +pub(super) struct TableBuilder<I: Idx, T: FixedSizeEncoding> { + blocks: IndexVec<I, T::ByteArray>, _marker: PhantomData<T>, } -impl<I: Idx, T> Default for TableBuilder<I, T> -where - Option<T>: FixedSizeEncoding, -{ +impl<I: Idx, T: FixedSizeEncoding> Default for TableBuilder<I, T> { fn default() -> Self { TableBuilder { blocks: Default::default(), _marker: PhantomData } } } -impl<I: Idx, T> TableBuilder<I, T> +impl<I: Idx, const N: usize, T> TableBuilder<I, Option<T>> where - Option<T>: FixedSizeEncoding, + Option<T>: FixedSizeEncoding<ByteArray = [u8; N]>, { - pub(crate) fn set<const N: usize>(&mut self, i: I, value: T) - where - Option<T>: FixedSizeEncoding<ByteArray = [u8; N]>, - { + pub(crate) fn set(&mut self, i: I, value: T) { + self.set_nullable(i, Some(value)) + } +} + +impl<I: Idx, const N: usize, T: FixedSizeEncoding<ByteArray = [u8; N]>> TableBuilder<I, T> { + pub(crate) fn set_nullable(&mut self, i: I, value: T) { // FIXME(eddyb) investigate more compact encodings for sparse tables. // On the PR @michaelwoerister mentioned: // > Space requirements could perhaps be optimized by using the HAMT `popcnt` // > trick (i.e. divide things into buckets of 32 or 64 items and then // > store bit-masks of which item in each bucket is actually serialized). self.blocks.ensure_contains_elem(i, || [0; N]); - Some(value).write_to_bytes(&mut self.blocks[i]); + value.write_to_bytes(&mut self.blocks[i]); } - pub(crate) fn encode<const N: usize>(&self, buf: &mut FileEncoder) -> LazyTable<I, T> - where - Option<T>: FixedSizeEncoding<ByteArray = [u8; N]>, - { + pub(crate) fn encode(&self, buf: &mut FileEncoder) -> LazyTable<I, T> { let pos = buf.position(); for block in &self.blocks { buf.emit_raw_bytes(block); @@ -309,34 +318,27 @@ where } } -impl<I: Idx, T: ParameterizedOverTcx> LazyTable<I, T> +impl<I: Idx, const N: usize, T: FixedSizeEncoding<ByteArray = [u8; N]> + ParameterizedOverTcx> + LazyTable<I, T> where - Option<T>: FixedSizeEncoding, + for<'tcx> T::Value<'tcx>: FixedSizeEncoding<ByteArray = [u8; N]>, { /// Given the metadata, extract out the value at a particular index (if any). #[inline(never)] - pub(super) fn get<'a, 'tcx, M: Metadata<'a, 'tcx>, const N: usize>( - &self, - metadata: M, - i: I, - ) -> Option<T::Value<'tcx>> - where - Option<T::Value<'tcx>>: FixedSizeEncoding<ByteArray = [u8; N]>, - { + pub(super) fn get<'a, 'tcx, M: Metadata<'a, 'tcx>>(&self, metadata: M, i: I) -> T::Value<'tcx> { debug!("LazyTable::lookup: index={:?} len={:?}", i, self.encoded_size); let start = self.position.get(); let bytes = &metadata.blob()[start..start + self.encoded_size]; let (bytes, []) = bytes.as_chunks::<N>() else { panic!() }; - let bytes = bytes.get(i.index())?; - FixedSizeEncoding::from_bytes(bytes) + match bytes.get(i.index()) { + Some(bytes) => FixedSizeEncoding::from_bytes(bytes), + None => FixedSizeEncoding::from_bytes(&[0; N]), + } } /// Size of the table in entries, including possible gaps. - pub(super) fn size<const N: usize>(&self) -> usize - where - for<'tcx> Option<T::Value<'tcx>>: FixedSizeEncoding<ByteArray = [u8; N]>, - { + pub(super) fn size(&self) -> usize { self.encoded_size / N } } diff --git a/compiler/rustc_middle/src/mir/basic_blocks.rs b/compiler/rustc_middle/src/mir/basic_blocks.rs index 752cbdeae6b..b93871769b7 100644 --- a/compiler/rustc_middle/src/mir/basic_blocks.rs +++ b/compiler/rustc_middle/src/mir/basic_blocks.rs @@ -1,41 +1,46 @@ -use crate::mir::graph_cyclic_cache::GraphIsCyclicCache; -use crate::mir::predecessors::{PredecessorCache, Predecessors}; -use crate::mir::switch_sources::{SwitchSourceCache, SwitchSources}; -use crate::mir::traversal::PostorderCache; -use crate::mir::{BasicBlock, BasicBlockData, Successors, START_BLOCK}; +use crate::mir::traversal::Postorder; +use crate::mir::{BasicBlock, BasicBlockData, Successors, Terminator, TerminatorKind, START_BLOCK}; +use rustc_data_structures::fx::FxHashMap; use rustc_data_structures::graph; use rustc_data_structures::graph::dominators::{dominators, Dominators}; +use rustc_data_structures::stable_hasher::{HashStable, StableHasher}; +use rustc_data_structures::sync::OnceCell; use rustc_index::vec::IndexVec; +use rustc_serialize::{Decodable, Decoder, Encodable, Encoder}; +use smallvec::SmallVec; #[derive(Clone, TyEncodable, TyDecodable, Debug, HashStable, TypeFoldable, TypeVisitable)] pub struct BasicBlocks<'tcx> { basic_blocks: IndexVec<BasicBlock, BasicBlockData<'tcx>>, - predecessor_cache: PredecessorCache, - switch_source_cache: SwitchSourceCache, - is_cyclic: GraphIsCyclicCache, - postorder_cache: PostorderCache, + cache: Cache, +} + +// Typically 95%+ of basic blocks have 4 or fewer predecessors. +pub type Predecessors = IndexVec<BasicBlock, SmallVec<[BasicBlock; 4]>>; + +pub type SwitchSources = FxHashMap<(BasicBlock, BasicBlock), SmallVec<[Option<u128>; 1]>>; + +#[derive(Clone, Default, Debug)] +struct Cache { + predecessors: OnceCell<Predecessors>, + switch_sources: OnceCell<SwitchSources>, + is_cyclic: OnceCell<bool>, + postorder: OnceCell<Vec<BasicBlock>>, } impl<'tcx> BasicBlocks<'tcx> { #[inline] pub fn new(basic_blocks: IndexVec<BasicBlock, BasicBlockData<'tcx>>) -> Self { - BasicBlocks { - basic_blocks, - predecessor_cache: PredecessorCache::new(), - switch_source_cache: SwitchSourceCache::new(), - is_cyclic: GraphIsCyclicCache::new(), - postorder_cache: PostorderCache::new(), - } + BasicBlocks { basic_blocks, cache: Cache::default() } } /// Returns true if control-flow graph contains a cycle reachable from the `START_BLOCK`. #[inline] pub fn is_cfg_cyclic(&self) -> bool { - self.is_cyclic.is_cyclic(self) + *self.cache.is_cyclic.get_or_init(|| graph::is_cyclic(self)) } - #[inline] pub fn dominators(&self) -> Dominators<BasicBlock> { dominators(&self) } @@ -43,20 +48,46 @@ impl<'tcx> BasicBlocks<'tcx> { /// Returns predecessors for each basic block. #[inline] pub fn predecessors(&self) -> &Predecessors { - self.predecessor_cache.compute(&self.basic_blocks) + self.cache.predecessors.get_or_init(|| { + let mut preds = IndexVec::from_elem(SmallVec::new(), &self.basic_blocks); + for (bb, data) in self.basic_blocks.iter_enumerated() { + if let Some(term) = &data.terminator { + for succ in term.successors() { + preds[succ].push(bb); + } + } + } + preds + }) } /// Returns basic blocks in a postorder. #[inline] pub fn postorder(&self) -> &[BasicBlock] { - self.postorder_cache.compute(&self.basic_blocks) + self.cache.postorder.get_or_init(|| { + Postorder::new(&self.basic_blocks, START_BLOCK).map(|(bb, _)| bb).collect() + }) } /// `switch_sources()[&(target, switch)]` returns a list of switch /// values that lead to a `target` block from a `switch` block. #[inline] pub fn switch_sources(&self) -> &SwitchSources { - self.switch_source_cache.compute(&self.basic_blocks) + self.cache.switch_sources.get_or_init(|| { + let mut switch_sources: SwitchSources = FxHashMap::default(); + for (bb, data) in self.basic_blocks.iter_enumerated() { + if let Some(Terminator { + kind: TerminatorKind::SwitchInt { targets, .. }, .. + }) = &data.terminator + { + for (value, target) in targets.iter() { + switch_sources.entry((target, bb)).or_default().push(Some(value)); + } + switch_sources.entry((targets.otherwise(), bb)).or_default().push(None); + } + } + switch_sources + }) } /// Returns mutable reference to basic blocks. Invalidates CFG cache. @@ -88,10 +119,7 @@ impl<'tcx> BasicBlocks<'tcx> { /// All other methods that allow you to mutate the basic blocks also call this method /// themselves, thereby avoiding any risk of accidentally cache invalidation. pub fn invalidate_cfg_cache(&mut self) { - self.predecessor_cache.invalidate(); - self.switch_source_cache.invalidate(); - self.is_cyclic.invalidate(); - self.postorder_cache.invalidate(); + self.cache = Cache::default(); } } @@ -145,3 +173,24 @@ impl<'tcx> graph::WithPredecessors for BasicBlocks<'tcx> { self.predecessors()[node].iter().copied() } } + +TrivialTypeTraversalAndLiftImpls! { + Cache, +} + +impl<S: Encoder> Encodable<S> for Cache { + #[inline] + fn encode(&self, _s: &mut S) {} +} + +impl<D: Decoder> Decodable<D> for Cache { + #[inline] + fn decode(_: &mut D) -> Self { + Default::default() + } +} + +impl<CTX> HashStable<CTX> for Cache { + #[inline] + fn hash_stable(&self, _: &mut CTX, _: &mut StableHasher) {} +} diff --git a/compiler/rustc_middle/src/mir/graph_cyclic_cache.rs b/compiler/rustc_middle/src/mir/graph_cyclic_cache.rs deleted file mode 100644 index f97bf2883b3..00000000000 --- a/compiler/rustc_middle/src/mir/graph_cyclic_cache.rs +++ /dev/null @@ -1,63 +0,0 @@ -use rustc_data_structures::graph::{ - self, DirectedGraph, WithNumNodes, WithStartNode, WithSuccessors, -}; -use rustc_data_structures::stable_hasher::{HashStable, StableHasher}; -use rustc_data_structures::sync::OnceCell; -use rustc_serialize::{Decodable, Decoder, Encodable, Encoder}; - -/// Helper type to cache the result of `graph::is_cyclic`. -#[derive(Clone, Debug)] -pub(super) struct GraphIsCyclicCache { - cache: OnceCell<bool>, -} - -impl GraphIsCyclicCache { - #[inline] - pub(super) fn new() -> Self { - GraphIsCyclicCache { cache: OnceCell::new() } - } - - pub(super) fn is_cyclic<G>(&self, graph: &G) -> bool - where - G: ?Sized + DirectedGraph + WithStartNode + WithSuccessors + WithNumNodes, - { - *self.cache.get_or_init(|| graph::is_cyclic(graph)) - } - - /// Invalidates the cache. - #[inline] - pub(super) fn invalidate(&mut self) { - // Invalidating the cache requires mutating the MIR, which in turn requires a unique - // reference (`&mut`) to the `mir::Body`. Because of this, we can assume that all - // callers of `invalidate` have a unique reference to the MIR and thus to the - // cache. This means we never need to do synchronization when `invalidate` is called, - // we can simply reinitialize the `OnceCell`. - self.cache = OnceCell::new(); - } -} - -impl<S: Encoder> Encodable<S> for GraphIsCyclicCache { - #[inline] - fn encode(&self, s: &mut S) { - Encodable::encode(&(), s); - } -} - -impl<D: Decoder> Decodable<D> for GraphIsCyclicCache { - #[inline] - fn decode(d: &mut D) -> Self { - let () = Decodable::decode(d); - Self::new() - } -} - -impl<CTX> HashStable<CTX> for GraphIsCyclicCache { - #[inline] - fn hash_stable(&self, _: &mut CTX, _: &mut StableHasher) { - // do nothing - } -} - -TrivialTypeTraversalAndLiftImpls! { - GraphIsCyclicCache, -} diff --git a/compiler/rustc_middle/src/mir/mod.rs b/compiler/rustc_middle/src/mir/mod.rs index e52b243ecf6..4da893e4c07 100644 --- a/compiler/rustc_middle/src/mir/mod.rs +++ b/compiler/rustc_middle/src/mir/mod.rs @@ -47,18 +47,15 @@ mod basic_blocks; pub mod coverage; mod generic_graph; pub mod generic_graphviz; -mod graph_cyclic_cache; pub mod graphviz; pub mod interpret; pub mod mono; pub mod patch; -mod predecessors; pub mod pretty; mod query; pub mod spanview; mod syntax; pub use syntax::*; -mod switch_sources; pub mod tcx; pub mod terminator; pub use terminator::*; @@ -3049,7 +3046,7 @@ impl Location { if self.block == other.block { self.statement_index <= other.statement_index } else { - dominators.is_dominated_by(other.block, self.block) + dominators.dominates(self.block, other.block) } } } diff --git a/compiler/rustc_middle/src/mir/predecessors.rs b/compiler/rustc_middle/src/mir/predecessors.rs deleted file mode 100644 index 5f1fadaf3bc..00000000000 --- a/compiler/rustc_middle/src/mir/predecessors.rs +++ /dev/null @@ -1,78 +0,0 @@ -//! Lazily compute the reverse control-flow graph for the MIR. - -use rustc_data_structures::stable_hasher::{HashStable, StableHasher}; -use rustc_data_structures::sync::OnceCell; -use rustc_index::vec::IndexVec; -use rustc_serialize::{Decodable, Decoder, Encodable, Encoder}; -use smallvec::SmallVec; - -use crate::mir::{BasicBlock, BasicBlockData}; - -// Typically 95%+ of basic blocks have 4 or fewer predecessors. -pub type Predecessors = IndexVec<BasicBlock, SmallVec<[BasicBlock; 4]>>; - -#[derive(Clone, Debug)] -pub(super) struct PredecessorCache { - cache: OnceCell<Predecessors>, -} - -impl PredecessorCache { - #[inline] - pub(super) fn new() -> Self { - PredecessorCache { cache: OnceCell::new() } - } - - /// Invalidates the predecessor cache. - #[inline] - pub(super) fn invalidate(&mut self) { - // Invalidating the predecessor cache requires mutating the MIR, which in turn requires a - // unique reference (`&mut`) to the `mir::Body`. Because of this, we can assume that all - // callers of `invalidate` have a unique reference to the MIR and thus to the predecessor - // cache. This means we never need to do synchronization when `invalidate` is called, we can - // simply reinitialize the `OnceCell`. - self.cache = OnceCell::new(); - } - - /// Returns the predecessor graph for this MIR. - #[inline] - pub(super) fn compute( - &self, - basic_blocks: &IndexVec<BasicBlock, BasicBlockData<'_>>, - ) -> &Predecessors { - self.cache.get_or_init(|| { - let mut preds = IndexVec::from_elem(SmallVec::new(), basic_blocks); - for (bb, data) in basic_blocks.iter_enumerated() { - if let Some(term) = &data.terminator { - for succ in term.successors() { - preds[succ].push(bb); - } - } - } - - preds - }) - } -} - -impl<S: Encoder> Encodable<S> for PredecessorCache { - #[inline] - fn encode(&self, _s: &mut S) {} -} - -impl<D: Decoder> Decodable<D> for PredecessorCache { - #[inline] - fn decode(_: &mut D) -> Self { - Self::new() - } -} - -impl<CTX> HashStable<CTX> for PredecessorCache { - #[inline] - fn hash_stable(&self, _: &mut CTX, _: &mut StableHasher) { - // do nothing - } -} - -TrivialTypeTraversalAndLiftImpls! { - PredecessorCache, -} diff --git a/compiler/rustc_middle/src/mir/switch_sources.rs b/compiler/rustc_middle/src/mir/switch_sources.rs deleted file mode 100644 index b91c0c25782..00000000000 --- a/compiler/rustc_middle/src/mir/switch_sources.rs +++ /dev/null @@ -1,78 +0,0 @@ -//! Lazily compute the inverse of each `SwitchInt`'s switch targets. Modeled after -//! `Predecessors`/`PredecessorCache`. - -use rustc_data_structures::fx::FxHashMap; -use rustc_data_structures::stable_hasher::{HashStable, StableHasher}; -use rustc_data_structures::sync::OnceCell; -use rustc_index::vec::IndexVec; -use rustc_serialize::{Decodable, Decoder, Encodable, Encoder}; -use smallvec::SmallVec; - -use crate::mir::{BasicBlock, BasicBlockData, Terminator, TerminatorKind}; - -pub type SwitchSources = FxHashMap<(BasicBlock, BasicBlock), SmallVec<[Option<u128>; 1]>>; - -#[derive(Clone, Debug)] -pub(super) struct SwitchSourceCache { - cache: OnceCell<SwitchSources>, -} - -impl SwitchSourceCache { - #[inline] - pub(super) fn new() -> Self { - SwitchSourceCache { cache: OnceCell::new() } - } - - /// Invalidates the switch source cache. - #[inline] - pub(super) fn invalidate(&mut self) { - self.cache = OnceCell::new(); - } - - /// Returns the switch sources for this MIR. - #[inline] - pub(super) fn compute( - &self, - basic_blocks: &IndexVec<BasicBlock, BasicBlockData<'_>>, - ) -> &SwitchSources { - self.cache.get_or_init(|| { - let mut switch_sources: SwitchSources = FxHashMap::default(); - for (bb, data) in basic_blocks.iter_enumerated() { - if let Some(Terminator { - kind: TerminatorKind::SwitchInt { targets, .. }, .. - }) = &data.terminator - { - for (value, target) in targets.iter() { - switch_sources.entry((target, bb)).or_default().push(Some(value)); - } - switch_sources.entry((targets.otherwise(), bb)).or_default().push(None); - } - } - - switch_sources - }) - } -} - -impl<S: Encoder> Encodable<S> for SwitchSourceCache { - #[inline] - fn encode(&self, _s: &mut S) {} -} - -impl<D: Decoder> Decodable<D> for SwitchSourceCache { - #[inline] - fn decode(_: &mut D) -> Self { - Self::new() - } -} - -impl<CTX> HashStable<CTX> for SwitchSourceCache { - #[inline] - fn hash_stable(&self, _: &mut CTX, _: &mut StableHasher) { - // do nothing - } -} - -TrivialTypeTraversalAndLiftImpls! { - SwitchSourceCache, -} diff --git a/compiler/rustc_middle/src/mir/traversal.rs b/compiler/rustc_middle/src/mir/traversal.rs index 0b461d1ce41..f37222cb297 100644 --- a/compiler/rustc_middle/src/mir/traversal.rs +++ b/compiler/rustc_middle/src/mir/traversal.rs @@ -1,7 +1,4 @@ -use rustc_data_structures::stable_hasher::{HashStable, StableHasher}; -use rustc_data_structures::sync::OnceCell; use rustc_index::bit_set::BitSet; -use rustc_serialize::{Decodable, Decoder, Encodable, Encoder}; use super::*; @@ -339,50 +336,3 @@ pub fn reverse_postorder<'a, 'tcx>(body: &'a Body<'tcx>) -> ReversePostorderIter let len = blocks.len(); ReversePostorderIter { body, blocks, idx: len } } - -#[derive(Clone, Debug)] -pub(super) struct PostorderCache { - cache: OnceCell<Vec<BasicBlock>>, -} - -impl PostorderCache { - #[inline] - pub(super) fn new() -> Self { - PostorderCache { cache: OnceCell::new() } - } - - /// Invalidates the postorder cache. - #[inline] - pub(super) fn invalidate(&mut self) { - self.cache = OnceCell::new(); - } - - /// Returns the `&[BasicBlocks]` represents the postorder graph for this MIR. - #[inline] - pub(super) fn compute(&self, body: &IndexVec<BasicBlock, BasicBlockData<'_>>) -> &[BasicBlock] { - self.cache.get_or_init(|| Postorder::new(body, START_BLOCK).map(|(bb, _)| bb).collect()) - } -} - -impl<S: Encoder> Encodable<S> for PostorderCache { - #[inline] - fn encode(&self, _s: &mut S) {} -} - -impl<D: Decoder> Decodable<D> for PostorderCache { - #[inline] - fn decode(_: &mut D) -> Self { - Self::new() - } -} - -impl<CTX> HashStable<CTX> for PostorderCache { - #[inline] - fn hash_stable(&self, _: &mut CTX, _: &mut StableHasher) { - // do nothing - } -} - -TrivialTypeTraversalAndLiftImpls! { - PostorderCache, -} diff --git a/compiler/rustc_middle/src/query/mod.rs b/compiler/rustc_middle/src/query/mod.rs index 6bbf7fa3914..7db86c8d0d4 100644 --- a/compiler/rustc_middle/src/query/mod.rs +++ b/compiler/rustc_middle/src/query/mod.rs @@ -1157,6 +1157,7 @@ rustc_queries! { /// Determines whether an item is annotated with `doc(hidden)`. query is_doc_hidden(def_id: DefId) -> bool { desc { |tcx| "checking whether `{}` is `doc(hidden)`", tcx.def_path_str(def_id) } + separate_provide_extern } /// Determines whether an item is annotated with `doc(notable_trait)`. diff --git a/compiler/rustc_middle/src/traits/chalk.rs b/compiler/rustc_middle/src/traits/chalk.rs index dd75b0d9ebc..fcc8f457a8b 100644 --- a/compiler/rustc_middle/src/traits/chalk.rs +++ b/compiler/rustc_middle/src/traits/chalk.rs @@ -159,18 +159,20 @@ impl<'tcx> chalk_ir::interner::Interner for RustInterner<'tcx> { } chalk_ir::TyKind::Array(ty, len) => Some(write!(fmt, "[{:?}; {:?}]", ty, len)), chalk_ir::TyKind::Slice(ty) => Some(write!(fmt, "[{:?}]", ty)), - chalk_ir::TyKind::Tuple(len, substs) => Some((|| { - write!(fmt, "(")?; - for (idx, substitution) in substs.interned().iter().enumerate() { - if idx == *len && *len != 1 { - // Don't add a trailing comma if the tuple has more than one element - write!(fmt, "{:?}", substitution)?; - } else { - write!(fmt, "{:?},", substitution)?; + chalk_ir::TyKind::Tuple(len, substs) => Some( + try { + write!(fmt, "(")?; + for (idx, substitution) in substs.interned().iter().enumerate() { + if idx == *len && *len != 1 { + // Don't add a trailing comma if the tuple has more than one element + write!(fmt, "{:?}", substitution)?; + } else { + write!(fmt, "{:?},", substitution)?; + } } - } - write!(fmt, ")") - })()), + write!(fmt, ")")?; + }, + ), _ => None, } } diff --git a/compiler/rustc_middle/src/traits/mod.rs b/compiler/rustc_middle/src/traits/mod.rs index d00b26a5a3d..f6fae8ab552 100644 --- a/compiler/rustc_middle/src/traits/mod.rs +++ b/compiler/rustc_middle/src/traits/mod.rs @@ -18,7 +18,8 @@ use crate::ty::{self, AdtKind, Ty, TyCtxt}; use rustc_data_structures::sync::Lrc; use rustc_errors::{Applicability, Diagnostic}; use rustc_hir as hir; -use rustc_hir::def_id::{DefId, LocalDefId}; +use rustc_hir::def_id::DefId; +use rustc_span::def_id::{LocalDefId, CRATE_DEF_ID}; use rustc_span::symbol::Symbol; use rustc_span::{Span, DUMMY_SP}; use smallvec::SmallVec; @@ -99,7 +100,7 @@ pub struct ObligationCause<'tcx> { /// (in particular, closures can add new assumptions). See the /// field `region_obligations` of the `FulfillmentContext` for more /// information. - pub body_id: hir::HirId, + pub body_id: LocalDefId, code: InternedObligationCauseCode<'tcx>, } @@ -120,13 +121,13 @@ impl<'tcx> ObligationCause<'tcx> { #[inline] pub fn new( span: Span, - body_id: hir::HirId, + body_id: LocalDefId, code: ObligationCauseCode<'tcx>, ) -> ObligationCause<'tcx> { ObligationCause { span, body_id, code: code.into() } } - pub fn misc(span: Span, body_id: hir::HirId) -> ObligationCause<'tcx> { + pub fn misc(span: Span, body_id: LocalDefId) -> ObligationCause<'tcx> { ObligationCause::new(span, body_id, MiscObligation) } @@ -137,7 +138,7 @@ impl<'tcx> ObligationCause<'tcx> { #[inline(always)] pub fn dummy_with_span(span: Span) -> ObligationCause<'tcx> { - ObligationCause { span, body_id: hir::CRATE_HIR_ID, code: Default::default() } + ObligationCause { span, body_id: CRATE_DEF_ID, code: Default::default() } } pub fn span(&self) -> Span { diff --git a/compiler/rustc_middle/src/ty/assoc.rs b/compiler/rustc_middle/src/ty/assoc.rs index 859a58c8998..bb7fba3ee71 100644 --- a/compiler/rustc_middle/src/ty/assoc.rs +++ b/compiler/rustc_middle/src/ty/assoc.rs @@ -37,6 +37,11 @@ impl AssocItem { Ident::new(self.name, tcx.def_ident_span(self.def_id).unwrap()) } + /// Gets the defaultness of the associated item. + /// To get the default associated type, use the [`type_of`] query on the + /// [`DefId`] of the type. + /// + /// [`type_of`]: crate::ty::TyCtxt::type_of pub fn defaultness(&self, tcx: TyCtxt<'_>) -> hir::Defaultness { tcx.impl_defaultness(self.def_id) } diff --git a/compiler/rustc_middle/src/ty/context.rs b/compiler/rustc_middle/src/ty/context.rs index ce04d8d21f4..0b16270ea98 100644 --- a/compiler/rustc_middle/src/ty/context.rs +++ b/compiler/rustc_middle/src/ty/context.rs @@ -997,6 +997,30 @@ impl<'tcx> TyCtxt<'tcx> { v.0 } + /// Given a `DefId` for an `fn`, return all the `dyn` and `impl` traits in its return type and associated alias span when type alias is used + pub fn return_type_impl_or_dyn_traits_with_type_alias( + self, + scope_def_id: LocalDefId, + ) -> Option<(Vec<&'tcx hir::Ty<'tcx>>, Span)> { + let hir_id = self.hir().local_def_id_to_hir_id(scope_def_id); + let mut v = TraitObjectVisitor(vec![], self.hir()); + // when the return type is a type alias + if let Some(hir::FnDecl { output: hir::FnRetTy::Return(hir_output), .. }) = self.hir().fn_decl_by_hir_id(hir_id) + && let hir::TyKind::Path(hir::QPath::Resolved( + None, + hir::Path { res: hir::def::Res::Def(DefKind::TyAlias, def_id), .. }, )) = hir_output.kind + && let Some(local_id) = def_id.as_local() + && let Some(alias_ty) = self.hir().get_by_def_id(local_id).alias_ty() // it is type alias + && let Some(alias_generics) = self.hir().get_by_def_id(local_id).generics() + { + v.visit_ty(alias_ty); + if !v.0.is_empty() { + return Some((v.0, alias_generics.span)); + } + } + return None; + } + pub fn return_type_impl_trait(self, scope_def_id: LocalDefId) -> Option<(Ty<'tcx>, Span)> { // `type_of()` will fail on these (#55796, #86483), so only allow `fn`s or closures. match self.hir().get_by_def_id(scope_def_id) { diff --git a/compiler/rustc_middle/src/ty/mod.rs b/compiler/rustc_middle/src/ty/mod.rs index d681df14af1..4af29fcbfb5 100644 --- a/compiler/rustc_middle/src/ty/mod.rs +++ b/compiler/rustc_middle/src/ty/mod.rs @@ -38,7 +38,7 @@ use rustc_data_structures::stable_hasher::{HashStable, StableHasher}; use rustc_data_structures::tagged_ptr::CopyTaggedPtr; use rustc_hir as hir; use rustc_hir::def::{CtorKind, CtorOf, DefKind, LifetimeRes, Res}; -use rustc_hir::def_id::{CrateNum, DefId, LocalDefId, LocalDefIdMap}; +use rustc_hir::def_id::{CrateNum, DefId, DefIdMap, LocalDefId, LocalDefIdMap}; use rustc_hir::Node; use rustc_index::vec::IndexVec; use rustc_macros::HashStable; @@ -436,7 +436,7 @@ pub struct CrateVariancesMap<'tcx> { /// For each item with generics, maps to a vector of the variance /// of its generics. If an item has no generics, it will have no /// entry. - pub variances: FxHashMap<DefId, &'tcx [ty::Variance]>, + pub variances: DefIdMap<&'tcx [ty::Variance]>, } // Contains information needed to resolve types and (in the future) look up @@ -2437,6 +2437,7 @@ impl<'tcx> TyCtxt<'tcx> { ident } + // FIXME(vincenzoapalzzo): move the HirId to a LocalDefId pub fn adjust_ident_and_get_scope( self, mut ident: Ident, @@ -2619,7 +2620,7 @@ impl<'tcx> fmt::Debug for SymbolName<'tcx> { } #[derive(Debug, Default, Copy, Clone)] -pub struct FoundRelationships { +pub struct InferVarInfo { /// This is true if we identified that this Ty (`?T`) is found in a `?T: Foo` /// obligation, where: /// diff --git a/compiler/rustc_middle/src/ty/print/pretty.rs b/compiler/rustc_middle/src/ty/print/pretty.rs index 5576e53e6a7..ae7c20fff0c 100644 --- a/compiler/rustc_middle/src/ty/print/pretty.rs +++ b/compiler/rustc_middle/src/ty/print/pretty.rs @@ -393,7 +393,7 @@ pub trait PrettyPrinter<'tcx>: match self.tcx().trimmed_def_paths(()).get(&def_id) { None => Ok((self, false)), Some(symbol) => { - self.write_str(symbol.as_str())?; + write!(self, "{}", Ident::with_dummy_span(*symbol))?; Ok((self, true)) } } diff --git a/compiler/rustc_middle/src/ty/typeck_results.rs b/compiler/rustc_middle/src/ty/typeck_results.rs index 18281b5175c..2902c6dc556 100644 --- a/compiler/rustc_middle/src/ty/typeck_results.rs +++ b/compiler/rustc_middle/src/ty/typeck_results.rs @@ -6,7 +6,12 @@ use crate::{ GenericArgKind, InternalSubsts, SubstsRef, Ty, UserSubsts, }, }; -use rustc_data_structures::{fx::FxHashMap, sync::Lrc, unord::UnordSet, vec_map::VecMap}; +use rustc_data_structures::{ + fx::FxHashMap, + sync::Lrc, + unord::{UnordItems, UnordSet}, + vec_map::VecMap, +}; use rustc_errors::ErrorGuaranteed; use rustc_hir as hir; use rustc_hir::{ @@ -20,11 +25,7 @@ use rustc_macros::HashStable; use rustc_middle::mir::FakeReadCause; use rustc_session::Session; use rustc_span::Span; -use std::{ - collections::hash_map::{self, Entry}, - hash::Hash, - iter, -}; +use std::{collections::hash_map::Entry, hash::Hash, iter}; use super::RvalueScopes; @@ -567,8 +568,15 @@ impl<'a, V> LocalTableInContext<'a, V> { self.data.get(&id.local_id) } - pub fn iter(&self) -> hash_map::Iter<'_, hir::ItemLocalId, V> { - self.data.iter() + pub fn items( + &'a self, + ) -> UnordItems<(hir::ItemLocalId, &'a V), impl Iterator<Item = (hir::ItemLocalId, &'a V)>> + { + self.data.items().map(|(id, value)| (*id, value)) + } + + pub fn items_in_stable_order(&self) -> Vec<(ItemLocalId, &'a V)> { + self.data.to_sorted_stable_ord() } } @@ -605,6 +613,16 @@ impl<'a, V> LocalTableInContextMut<'a, V> { validate_hir_id_for_typeck_results(self.hir_owner, id); self.data.remove(&id.local_id) } + + pub fn extend( + &mut self, + items: UnordItems<(hir::HirId, V), impl Iterator<Item = (hir::HirId, V)>>, + ) { + self.data.extend(items.map(|(id, value)| { + validate_hir_id_for_typeck_results(self.hir_owner, id); + (id.local_id, value) + })) + } } rustc_index::newtype_index! { diff --git a/compiler/rustc_middle/src/ty/util.rs b/compiler/rustc_middle/src/ty/util.rs index d0d1dcc584f..60076c8cb5f 100644 --- a/compiler/rustc_middle/src/ty/util.rs +++ b/compiler/rustc_middle/src/ty/util.rs @@ -1310,7 +1310,8 @@ pub fn reveal_opaque_types_in_bounds<'tcx>( } /// Determines whether an item is annotated with `doc(hidden)`. -pub fn is_doc_hidden(tcx: TyCtxt<'_>, def_id: DefId) -> bool { +fn is_doc_hidden(tcx: TyCtxt<'_>, def_id: DefId) -> bool { + assert!(def_id.is_local()); tcx.get_attrs(def_id, sym::doc) .filter_map(|attr| attr.meta_item_list()) .any(|items| items.iter().any(|item| item.has_name(sym::hidden))) diff --git a/compiler/rustc_mir_build/src/build/custom/mod.rs b/compiler/rustc_mir_build/src/build/custom/mod.rs index 34fefb99e09..33fdc1901cd 100644 --- a/compiler/rustc_mir_build/src/build/custom/mod.rs +++ b/compiler/rustc_mir_build/src/build/custom/mod.rs @@ -86,10 +86,10 @@ pub(super) fn build_custom_mir<'tcx>( block_map: FxHashMap::default(), }; - let res = (|| { + let res: PResult<_> = try { pctxt.parse_args(¶ms)?; - pctxt.parse_body(expr) - })(); + pctxt.parse_body(expr)?; + }; if let Err(err) = res { tcx.sess.diagnostic().span_fatal( err.span, diff --git a/compiler/rustc_mir_build/src/build/custom/parse/instruction.rs b/compiler/rustc_mir_build/src/build/custom/parse/instruction.rs index 2560eaee433..9840b95feef 100644 --- a/compiler/rustc_mir_build/src/build/custom/parse/instruction.rs +++ b/compiler/rustc_mir_build/src/build/custom/parse/instruction.rs @@ -12,6 +12,12 @@ use super::{parse_by_kind, PResult, ParseCtxt}; impl<'tcx, 'body> ParseCtxt<'tcx, 'body> { pub fn parse_statement(&self, expr_id: ExprId) -> PResult<StatementKind<'tcx>> { parse_by_kind!(self, expr_id, _, "statement", + @call("mir_storage_live", args) => { + Ok(StatementKind::StorageLive(self.parse_local(args[0])?)) + }, + @call("mir_storage_dead", args) => { + Ok(StatementKind::StorageDead(self.parse_local(args[0])?)) + }, @call("mir_retag", args) => { Ok(StatementKind::Retag(RetagKind::Default, Box::new(self.parse_place(args[0])?))) }, diff --git a/compiler/rustc_mir_build/src/build/expr/stmt.rs b/compiler/rustc_mir_build/src/build/expr/stmt.rs index a73ab344718..78083685193 100644 --- a/compiler/rustc_mir_build/src/build/expr/stmt.rs +++ b/compiler/rustc_mir_build/src/build/expr/stmt.rs @@ -113,7 +113,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> { // // it is usually better to focus on `the_value` rather // than the entirety of block(s) surrounding it. - let adjusted_span = (|| { + let adjusted_span = if let ExprKind::Block { block } = expr.kind && let Some(tail_ex) = this.thir[block].expr { @@ -135,10 +135,10 @@ impl<'a, 'tcx> Builder<'a, 'tcx> { tail_result_is_ignored: true, span: expr.span, }); - return Some(expr.span); - } - None - })(); + Some(expr.span) + } else { + None + }; let temp = unpack!(block = this.as_temp(block, statement_scope, expr, Mutability::Not)); diff --git a/compiler/rustc_mir_build/src/thir/pattern/const_to_pat.rs b/compiler/rustc_mir_build/src/thir/pattern/const_to_pat.rs index 7f3519945c3..b0d24af958d 100644 --- a/compiler/rustc_mir_build/src/thir/pattern/const_to_pat.rs +++ b/compiler/rustc_mir_build/src/thir/pattern/const_to_pat.rs @@ -5,6 +5,7 @@ use rustc_middle::mir::{self, Field}; use rustc_middle::thir::{FieldPat, Pat, PatKind}; use rustc_middle::ty::{self, Ty, TyCtxt}; use rustc_session::lint; +use rustc_span::def_id::CRATE_DEF_ID; use rustc_span::Span; use rustc_trait_selection::traits::predicate_for_trait_def; use rustc_trait_selection::traits::query::evaluate_obligation::InferCtxtExt; @@ -189,10 +190,11 @@ impl<'tcx> ConstToPat<'tcx> { // using `PartialEq::eq` in this scenario in the past.) let partial_eq_trait_id = self.tcx().require_lang_item(hir::LangItem::PartialEq, Some(self.span)); + let def_id = self.tcx().hir().opt_local_def_id(self.id).unwrap_or(CRATE_DEF_ID); let obligation: PredicateObligation<'_> = predicate_for_trait_def( self.tcx(), self.param_env, - ObligationCause::misc(self.span, self.id), + ObligationCause::misc(self.span, def_id), partial_eq_trait_id, 0, [ty, ty], diff --git a/compiler/rustc_mir_build/src/thir/pattern/deconstruct_pat.rs b/compiler/rustc_mir_build/src/thir/pattern/deconstruct_pat.rs index 17b3c475f83..aba5429da43 100644 --- a/compiler/rustc_mir_build/src/thir/pattern/deconstruct_pat.rs +++ b/compiler/rustc_mir_build/src/thir/pattern/deconstruct_pat.rs @@ -141,27 +141,22 @@ impl IntRange { ) -> Option<IntRange> { let ty = value.ty(); if let Some((target_size, bias)) = Self::integral_size_and_signed_bias(tcx, ty) { - let val = (|| { - match value { - mir::ConstantKind::Val(ConstValue::Scalar(scalar), _) => { - // For this specific pattern we can skip a lot of effort and go - // straight to the result, after doing a bit of checking. (We - // could remove this branch and just fall through, which - // is more general but much slower.) - return scalar.to_bits_or_ptr_internal(target_size).unwrap().left(); - } - mir::ConstantKind::Ty(c) => match c.kind() { - ty::ConstKind::Value(_) => bug!( - "encountered ConstValue in mir::ConstantKind::Ty, whereas this is expected to be in ConstantKind::Val" - ), - _ => {} - }, - _ => {} + let val = if let mir::ConstantKind::Val(ConstValue::Scalar(scalar), _) = value { + // For this specific pattern we can skip a lot of effort and go + // straight to the result, after doing a bit of checking. (We + // could remove this branch and just fall through, which + // is more general but much slower.) + scalar.to_bits_or_ptr_internal(target_size).unwrap().left()? + } else { + if let mir::ConstantKind::Ty(c) = value + && let ty::ConstKind::Value(_) = c.kind() + { + bug!("encountered ConstValue in mir::ConstantKind::Ty, whereas this is expected to be in ConstantKind::Val"); } // This is a more general form of the previous case. - value.try_eval_bits(tcx, param_env, ty) - })()?; + value.try_eval_bits(tcx, param_env, ty)? + }; let val = val ^ bias; Some(IntRange { range: val..=val, bias }) } else { diff --git a/compiler/rustc_mir_transform/src/coverage/counters.rs b/compiler/rustc_mir_transform/src/coverage/counters.rs index 45de0c28035..658e01d9310 100644 --- a/compiler/rustc_mir_transform/src/coverage/counters.rs +++ b/compiler/rustc_mir_transform/src/coverage/counters.rs @@ -520,7 +520,7 @@ impl<'a> BcbCounters<'a> { let mut found_loop_exit = false; for &branch in branches.iter() { if backedge_from_bcbs.iter().any(|&backedge_from_bcb| { - self.bcb_is_dominated_by(backedge_from_bcb, branch.target_bcb) + self.bcb_dominates(branch.target_bcb, backedge_from_bcb) }) { if let Some(reloop_branch) = some_reloop_branch { if reloop_branch.counter(&self.basic_coverage_blocks).is_none() { @@ -603,8 +603,8 @@ impl<'a> BcbCounters<'a> { } #[inline] - fn bcb_is_dominated_by(&self, node: BasicCoverageBlock, dom: BasicCoverageBlock) -> bool { - self.basic_coverage_blocks.is_dominated_by(node, dom) + fn bcb_dominates(&self, dom: BasicCoverageBlock, node: BasicCoverageBlock) -> bool { + self.basic_coverage_blocks.dominates(dom, node) } #[inline] diff --git a/compiler/rustc_mir_transform/src/coverage/graph.rs b/compiler/rustc_mir_transform/src/coverage/graph.rs index 78d28f1ebab..a2671eef2e9 100644 --- a/compiler/rustc_mir_transform/src/coverage/graph.rs +++ b/compiler/rustc_mir_transform/src/coverage/graph.rs @@ -209,8 +209,8 @@ impl CoverageGraph { } #[inline(always)] - pub fn is_dominated_by(&self, node: BasicCoverageBlock, dom: BasicCoverageBlock) -> bool { - self.dominators.as_ref().unwrap().is_dominated_by(node, dom) + pub fn dominates(&self, dom: BasicCoverageBlock, node: BasicCoverageBlock) -> bool { + self.dominators.as_ref().unwrap().dominates(dom, node) } #[inline(always)] @@ -312,7 +312,7 @@ rustc_index::newtype_index! { /// to the BCB's primary counter or expression). /// /// The BCB CFG is critical to simplifying the coverage analysis by ensuring graph path-based -/// queries (`is_dominated_by()`, `predecessors`, `successors`, etc.) have branch (control flow) +/// queries (`dominates()`, `predecessors`, `successors`, etc.) have branch (control flow) /// significance. #[derive(Debug, Clone)] pub(super) struct BasicCoverageBlockData { @@ -594,7 +594,7 @@ impl TraverseCoverageGraphWithLoops { // branching block would have given an `Expression` (or vice versa). let (some_successor_to_add, some_loop_header) = if let Some((_, loop_header)) = context.loop_backedges { - if basic_coverage_blocks.is_dominated_by(successor, loop_header) { + if basic_coverage_blocks.dominates(loop_header, successor) { (Some(successor), Some(loop_header)) } else { (None, None) @@ -666,15 +666,15 @@ pub(super) fn find_loop_backedges( // // The overall complexity appears to be comparable to many other MIR transform algorithms, and I // don't expect that this function is creating a performance hot spot, but if this becomes an - // issue, there may be ways to optimize the `is_dominated_by` algorithm (as indicated by an + // issue, there may be ways to optimize the `dominates` algorithm (as indicated by an // existing `FIXME` comment in that code), or possibly ways to optimize it's usage here, perhaps // by keeping track of results for visited `BasicCoverageBlock`s if they can be used to short - // circuit downstream `is_dominated_by` checks. + // circuit downstream `dominates` checks. // // For now, that kind of optimization seems unnecessarily complicated. for (bcb, _) in basic_coverage_blocks.iter_enumerated() { for &successor in &basic_coverage_blocks.successors[bcb] { - if basic_coverage_blocks.is_dominated_by(bcb, successor) { + if basic_coverage_blocks.dominates(successor, bcb) { let loop_header = successor; let backedge_from_bcb = bcb; debug!( diff --git a/compiler/rustc_mir_transform/src/coverage/spans.rs b/compiler/rustc_mir_transform/src/coverage/spans.rs index c5434840453..31d5541a31b 100644 --- a/compiler/rustc_mir_transform/src/coverage/spans.rs +++ b/compiler/rustc_mir_transform/src/coverage/spans.rs @@ -63,7 +63,7 @@ impl CoverageStatement { /// Note: A `CoverageStatement` merged into another CoverageSpan may come from a `BasicBlock` that /// is not part of the `CoverageSpan` bcb if the statement was included because it's `Span` matches /// or is subsumed by the `Span` associated with this `CoverageSpan`, and it's `BasicBlock` -/// `is_dominated_by()` the `BasicBlock`s in this `CoverageSpan`. +/// `dominates()` the `BasicBlock`s in this `CoverageSpan`. #[derive(Debug, Clone)] pub(super) struct CoverageSpan { pub span: Span, @@ -705,12 +705,12 @@ impl<'a, 'tcx> CoverageSpans<'a, 'tcx> { fn hold_pending_dups_unless_dominated(&mut self) { // Equal coverage spans are ordered by dominators before dominated (if any), so it should be // impossible for `curr` to dominate any previous `CoverageSpan`. - debug_assert!(!self.span_bcb_is_dominated_by(self.prev(), self.curr())); + debug_assert!(!self.span_bcb_dominates(self.curr(), self.prev())); let initial_pending_count = self.pending_dups.len(); if initial_pending_count > 0 { let mut pending_dups = self.pending_dups.split_off(0); - pending_dups.retain(|dup| !self.span_bcb_is_dominated_by(self.curr(), dup)); + pending_dups.retain(|dup| !self.span_bcb_dominates(dup, self.curr())); self.pending_dups.append(&mut pending_dups); if self.pending_dups.len() < initial_pending_count { debug!( @@ -721,7 +721,7 @@ impl<'a, 'tcx> CoverageSpans<'a, 'tcx> { } } - if self.span_bcb_is_dominated_by(self.curr(), self.prev()) { + if self.span_bcb_dominates(self.prev(), self.curr()) { debug!( " different bcbs but SAME spans, and prev dominates curr. Discard prev={:?}", self.prev() @@ -787,8 +787,8 @@ impl<'a, 'tcx> CoverageSpans<'a, 'tcx> { } } - fn span_bcb_is_dominated_by(&self, covspan: &CoverageSpan, dom_covspan: &CoverageSpan) -> bool { - self.basic_coverage_blocks.is_dominated_by(covspan.bcb, dom_covspan.bcb) + fn span_bcb_dominates(&self, dom_covspan: &CoverageSpan, covspan: &CoverageSpan) -> bool { + self.basic_coverage_blocks.dominates(dom_covspan.bcb, covspan.bcb) } } diff --git a/compiler/rustc_mir_transform/src/lib.rs b/compiler/rustc_mir_transform/src/lib.rs index 20b7fdcfe6d..4a598862d10 100644 --- a/compiler/rustc_mir_transform/src/lib.rs +++ b/compiler/rustc_mir_transform/src/lib.rs @@ -90,7 +90,6 @@ mod shim; pub mod simplify; mod simplify_branches; mod simplify_comparison_integral; -mod simplify_try; mod sroa; mod uninhabited_enum_branching; mod unreachable_prop; @@ -567,8 +566,6 @@ fn run_optimization_passes<'tcx>(tcx: TyCtxt<'tcx>, body: &mut Body<'tcx>) { &o1(simplify_branches::SimplifyConstCondition::new("after-const-prop")), &early_otherwise_branch::EarlyOtherwiseBranch, &simplify_comparison_integral::SimplifyComparisonIntegral, - &simplify_try::SimplifyArmIdentity, - &simplify_try::SimplifyBranchSame, &dead_store_elimination::DeadStoreElimination, &dest_prop::DestinationPropagation, &o1(simplify_branches::SimplifyConstCondition::new("final")), diff --git a/compiler/rustc_mir_transform/src/simplify_try.rs b/compiler/rustc_mir_transform/src/simplify_try.rs deleted file mode 100644 index e4f3ace9a93..00000000000 --- a/compiler/rustc_mir_transform/src/simplify_try.rs +++ /dev/null @@ -1,822 +0,0 @@ -//! The general point of the optimizations provided here is to simplify something like: -//! -//! ```rust -//! # fn foo<T, E>(x: Result<T, E>) -> Result<T, E> { -//! match x { -//! Ok(x) => Ok(x), -//! Err(x) => Err(x) -//! } -//! # } -//! ``` -//! -//! into just `x`. - -use crate::{simplify, MirPass}; -use itertools::Itertools as _; -use rustc_index::{bit_set::BitSet, vec::IndexVec}; -use rustc_middle::mir::visit::{NonUseContext, PlaceContext, Visitor}; -use rustc_middle::mir::*; -use rustc_middle::ty::{self, List, Ty, TyCtxt}; -use rustc_target::abi::VariantIdx; -use std::iter::{once, Enumerate, Peekable}; -use std::slice::Iter; - -/// Simplifies arms of form `Variant(x) => Variant(x)` to just a move. -/// -/// This is done by transforming basic blocks where the statements match: -/// -/// ```ignore (MIR) -/// _LOCAL_TMP = ((_LOCAL_1 as Variant ).FIELD: TY ); -/// _TMP_2 = _LOCAL_TMP; -/// ((_LOCAL_0 as Variant).FIELD: TY) = move _TMP_2; -/// discriminant(_LOCAL_0) = VAR_IDX; -/// ``` -/// -/// into: -/// -/// ```ignore (MIR) -/// _LOCAL_0 = move _LOCAL_1 -/// ``` -pub struct SimplifyArmIdentity; - -#[derive(Debug)] -struct ArmIdentityInfo<'tcx> { - /// Storage location for the variant's field - local_temp_0: Local, - /// Storage location holding the variant being read from - local_1: Local, - /// The variant field being read from - vf_s0: VarField<'tcx>, - /// Index of the statement which loads the variant being read - get_variant_field_stmt: usize, - - /// Tracks each assignment to a temporary of the variant's field - field_tmp_assignments: Vec<(Local, Local)>, - - /// Storage location holding the variant's field that was read from - local_tmp_s1: Local, - /// Storage location holding the enum that we are writing to - local_0: Local, - /// The variant field being written to - vf_s1: VarField<'tcx>, - - /// Storage location that the discriminant is being written to - set_discr_local: Local, - /// The variant being written - set_discr_var_idx: VariantIdx, - - /// Index of the statement that should be overwritten as a move - stmt_to_overwrite: usize, - /// SourceInfo for the new move - source_info: SourceInfo, - - /// Indices of matching Storage{Live,Dead} statements encountered. - /// (StorageLive index,, StorageDead index, Local) - storage_stmts: Vec<(usize, usize, Local)>, - - /// The statements that should be removed (turned into nops) - stmts_to_remove: Vec<usize>, - - /// Indices of debug variables that need to be adjusted to point to - // `{local_0}.{dbg_projection}`. - dbg_info_to_adjust: Vec<usize>, - - /// The projection used to rewrite debug info. - dbg_projection: &'tcx List<PlaceElem<'tcx>>, -} - -fn get_arm_identity_info<'a, 'tcx>( - stmts: &'a [Statement<'tcx>], - locals_count: usize, - debug_info: &'a [VarDebugInfo<'tcx>], -) -> Option<ArmIdentityInfo<'tcx>> { - // This can't possibly match unless there are at least 3 statements in the block - // so fail fast on tiny blocks. - if stmts.len() < 3 { - return None; - } - - let mut tmp_assigns = Vec::new(); - let mut nop_stmts = Vec::new(); - let mut storage_stmts = Vec::new(); - let mut storage_live_stmts = Vec::new(); - let mut storage_dead_stmts = Vec::new(); - - type StmtIter<'a, 'tcx> = Peekable<Enumerate<Iter<'a, Statement<'tcx>>>>; - - fn is_storage_stmt(stmt: &Statement<'_>) -> bool { - matches!(stmt.kind, StatementKind::StorageLive(_) | StatementKind::StorageDead(_)) - } - - /// Eats consecutive Statements which match `test`, performing the specified `action` for each. - /// The iterator `stmt_iter` is not advanced if none were matched. - fn try_eat<'a, 'tcx>( - stmt_iter: &mut StmtIter<'a, 'tcx>, - test: impl Fn(&'a Statement<'tcx>) -> bool, - mut action: impl FnMut(usize, &'a Statement<'tcx>), - ) { - while stmt_iter.peek().map_or(false, |(_, stmt)| test(stmt)) { - let (idx, stmt) = stmt_iter.next().unwrap(); - - action(idx, stmt); - } - } - - /// Eats consecutive `StorageLive` and `StorageDead` Statements. - /// The iterator `stmt_iter` is not advanced if none were found. - fn try_eat_storage_stmts( - stmt_iter: &mut StmtIter<'_, '_>, - storage_live_stmts: &mut Vec<(usize, Local)>, - storage_dead_stmts: &mut Vec<(usize, Local)>, - ) { - try_eat(stmt_iter, is_storage_stmt, |idx, stmt| { - if let StatementKind::StorageLive(l) = stmt.kind { - storage_live_stmts.push((idx, l)); - } else if let StatementKind::StorageDead(l) = stmt.kind { - storage_dead_stmts.push((idx, l)); - } - }) - } - - fn is_tmp_storage_stmt(stmt: &Statement<'_>) -> bool { - use rustc_middle::mir::StatementKind::Assign; - if let Assign(box (place, Rvalue::Use(Operand::Copy(p) | Operand::Move(p)))) = &stmt.kind { - place.as_local().is_some() && p.as_local().is_some() - } else { - false - } - } - - /// Eats consecutive `Assign` Statements. - // The iterator `stmt_iter` is not advanced if none were found. - fn try_eat_assign_tmp_stmts( - stmt_iter: &mut StmtIter<'_, '_>, - tmp_assigns: &mut Vec<(Local, Local)>, - nop_stmts: &mut Vec<usize>, - ) { - try_eat(stmt_iter, is_tmp_storage_stmt, |idx, stmt| { - use rustc_middle::mir::StatementKind::Assign; - if let Assign(box (place, Rvalue::Use(Operand::Copy(p) | Operand::Move(p)))) = - &stmt.kind - { - tmp_assigns.push((place.as_local().unwrap(), p.as_local().unwrap())); - nop_stmts.push(idx); - } - }) - } - - fn find_storage_live_dead_stmts_for_local( - local: Local, - stmts: &[Statement<'_>], - ) -> Option<(usize, usize)> { - trace!("looking for {:?}", local); - let mut storage_live_stmt = None; - let mut storage_dead_stmt = None; - for (idx, stmt) in stmts.iter().enumerate() { - if stmt.kind == StatementKind::StorageLive(local) { - storage_live_stmt = Some(idx); - } else if stmt.kind == StatementKind::StorageDead(local) { - storage_dead_stmt = Some(idx); - } - } - - Some((storage_live_stmt?, storage_dead_stmt.unwrap_or(usize::MAX))) - } - - // Try to match the expected MIR structure with the basic block we're processing. - // We want to see something that looks like: - // ``` - // (StorageLive(_) | StorageDead(_));* - // _LOCAL_INTO = ((_LOCAL_FROM as Variant).FIELD: TY); - // (StorageLive(_) | StorageDead(_));* - // (tmp_n+1 = tmp_n);* - // (StorageLive(_) | StorageDead(_));* - // (tmp_n+1 = tmp_n);* - // ((LOCAL_FROM as Variant).FIELD: TY) = move tmp; - // discriminant(LOCAL_FROM) = VariantIdx; - // (StorageLive(_) | StorageDead(_));* - // ``` - let mut stmt_iter = stmts.iter().enumerate().peekable(); - - try_eat_storage_stmts(&mut stmt_iter, &mut storage_live_stmts, &mut storage_dead_stmts); - - let (get_variant_field_stmt, stmt) = stmt_iter.next()?; - let (local_tmp_s0, local_1, vf_s0, dbg_projection) = match_get_variant_field(stmt)?; - - try_eat_storage_stmts(&mut stmt_iter, &mut storage_live_stmts, &mut storage_dead_stmts); - - try_eat_assign_tmp_stmts(&mut stmt_iter, &mut tmp_assigns, &mut nop_stmts); - - try_eat_storage_stmts(&mut stmt_iter, &mut storage_live_stmts, &mut storage_dead_stmts); - - try_eat_assign_tmp_stmts(&mut stmt_iter, &mut tmp_assigns, &mut nop_stmts); - - let (idx, stmt) = stmt_iter.next()?; - let (local_tmp_s1, local_0, vf_s1) = match_set_variant_field(stmt)?; - nop_stmts.push(idx); - - let (idx, stmt) = stmt_iter.next()?; - let (set_discr_local, set_discr_var_idx) = match_set_discr(stmt)?; - let discr_stmt_source_info = stmt.source_info; - nop_stmts.push(idx); - - try_eat_storage_stmts(&mut stmt_iter, &mut storage_live_stmts, &mut storage_dead_stmts); - - for (live_idx, live_local) in storage_live_stmts { - if let Some(i) = storage_dead_stmts.iter().rposition(|(_, l)| *l == live_local) { - let (dead_idx, _) = storage_dead_stmts.swap_remove(i); - storage_stmts.push((live_idx, dead_idx, live_local)); - - if live_local == local_tmp_s0 { - nop_stmts.push(get_variant_field_stmt); - } - } - } - // We sort primitive usize here so we can use unstable sort - nop_stmts.sort_unstable(); - - // Use one of the statements we're going to discard between the point - // where the storage location for the variant field becomes live and - // is killed. - let (live_idx, dead_idx) = find_storage_live_dead_stmts_for_local(local_tmp_s0, stmts)?; - let stmt_to_overwrite = - nop_stmts.iter().find(|stmt_idx| live_idx < **stmt_idx && **stmt_idx < dead_idx); - - let mut tmp_assigned_vars = BitSet::new_empty(locals_count); - for (l, r) in &tmp_assigns { - tmp_assigned_vars.insert(*l); - tmp_assigned_vars.insert(*r); - } - - let dbg_info_to_adjust: Vec<_> = debug_info - .iter() - .enumerate() - .filter_map(|(i, var_info)| { - if let VarDebugInfoContents::Place(p) = var_info.value { - if tmp_assigned_vars.contains(p.local) { - return Some(i); - } - } - - None - }) - .collect(); - - Some(ArmIdentityInfo { - local_temp_0: local_tmp_s0, - local_1, - vf_s0, - get_variant_field_stmt, - field_tmp_assignments: tmp_assigns, - local_tmp_s1, - local_0, - vf_s1, - set_discr_local, - set_discr_var_idx, - stmt_to_overwrite: *stmt_to_overwrite?, - source_info: discr_stmt_source_info, - storage_stmts, - stmts_to_remove: nop_stmts, - dbg_info_to_adjust, - dbg_projection, - }) -} - -fn optimization_applies<'tcx>( - opt_info: &ArmIdentityInfo<'tcx>, - local_decls: &IndexVec<Local, LocalDecl<'tcx>>, - local_uses: &IndexVec<Local, usize>, - var_debug_info: &[VarDebugInfo<'tcx>], -) -> bool { - trace!("testing if optimization applies..."); - - // FIXME(wesleywiser): possibly relax this restriction? - if opt_info.local_0 == opt_info.local_1 { - trace!("NO: moving into ourselves"); - return false; - } else if opt_info.vf_s0 != opt_info.vf_s1 { - trace!("NO: the field-and-variant information do not match"); - return false; - } else if local_decls[opt_info.local_0].ty != local_decls[opt_info.local_1].ty { - // FIXME(Centril,oli-obk): possibly relax to same layout? - trace!("NO: source and target locals have different types"); - return false; - } else if (opt_info.local_0, opt_info.vf_s0.var_idx) - != (opt_info.set_discr_local, opt_info.set_discr_var_idx) - { - trace!("NO: the discriminants do not match"); - return false; - } - - // Verify the assignment chain consists of the form b = a; c = b; d = c; etc... - if opt_info.field_tmp_assignments.is_empty() { - trace!("NO: no assignments found"); - return false; - } - let mut last_assigned_to = opt_info.field_tmp_assignments[0].1; - let source_local = last_assigned_to; - for (l, r) in &opt_info.field_tmp_assignments { - if *r != last_assigned_to { - trace!("NO: found unexpected assignment {:?} = {:?}", l, r); - return false; - } - - last_assigned_to = *l; - } - - // Check that the first and last used locals are only used twice - // since they are of the form: - // - // ``` - // _first = ((_x as Variant).n: ty); - // _n = _first; - // ... - // ((_y as Variant).n: ty) = _n; - // discriminant(_y) = z; - // ``` - for (l, r) in &opt_info.field_tmp_assignments { - if local_uses[*l] != 2 { - warn!("NO: FAILED assignment chain local {:?} was used more than twice", l); - return false; - } else if local_uses[*r] != 2 { - warn!("NO: FAILED assignment chain local {:?} was used more than twice", r); - return false; - } - } - - // Check that debug info only points to full Locals and not projections. - for dbg_idx in &opt_info.dbg_info_to_adjust { - let dbg_info = &var_debug_info[*dbg_idx]; - if let VarDebugInfoContents::Place(p) = dbg_info.value { - if !p.projection.is_empty() { - trace!("NO: debug info for {:?} had a projection {:?}", dbg_info.name, p); - return false; - } - } - } - - if source_local != opt_info.local_temp_0 { - trace!( - "NO: start of assignment chain does not match enum variant temp: {:?} != {:?}", - source_local, - opt_info.local_temp_0 - ); - return false; - } else if last_assigned_to != opt_info.local_tmp_s1 { - trace!( - "NO: end of assignment chain does not match written enum temp: {:?} != {:?}", - last_assigned_to, - opt_info.local_tmp_s1 - ); - return false; - } - - trace!("SUCCESS: optimization applies!"); - true -} - -impl<'tcx> MirPass<'tcx> for SimplifyArmIdentity { - fn run_pass(&self, tcx: TyCtxt<'tcx>, body: &mut Body<'tcx>) { - // FIXME(77359): This optimization can result in unsoundness. - if !tcx.sess.opts.unstable_opts.unsound_mir_opts { - return; - } - - let source = body.source; - trace!("running SimplifyArmIdentity on {:?}", source); - - let local_uses = LocalUseCounter::get_local_uses(body); - for bb in body.basic_blocks.as_mut() { - if let Some(opt_info) = - get_arm_identity_info(&bb.statements, body.local_decls.len(), &body.var_debug_info) - { - trace!("got opt_info = {:#?}", opt_info); - if !optimization_applies( - &opt_info, - &body.local_decls, - &local_uses, - &body.var_debug_info, - ) { - debug!("optimization skipped for {:?}", source); - continue; - } - - // Also remove unused Storage{Live,Dead} statements which correspond - // to temps used previously. - for (live_idx, dead_idx, local) in &opt_info.storage_stmts { - // The temporary that we've read the variant field into is scoped to this block, - // so we can remove the assignment. - if *local == opt_info.local_temp_0 { - bb.statements[opt_info.get_variant_field_stmt].make_nop(); - } - - for (left, right) in &opt_info.field_tmp_assignments { - if local == left || local == right { - bb.statements[*live_idx].make_nop(); - bb.statements[*dead_idx].make_nop(); - } - } - } - - // Right shape; transform - for stmt_idx in opt_info.stmts_to_remove { - bb.statements[stmt_idx].make_nop(); - } - - let stmt = &mut bb.statements[opt_info.stmt_to_overwrite]; - stmt.source_info = opt_info.source_info; - stmt.kind = StatementKind::Assign(Box::new(( - opt_info.local_0.into(), - Rvalue::Use(Operand::Move(opt_info.local_1.into())), - ))); - - bb.statements.retain(|stmt| stmt.kind != StatementKind::Nop); - - // Fix the debug info to point to the right local - for dbg_index in opt_info.dbg_info_to_adjust { - let dbg_info = &mut body.var_debug_info[dbg_index]; - assert!( - matches!(dbg_info.value, VarDebugInfoContents::Place(_)), - "value was not a Place" - ); - if let VarDebugInfoContents::Place(p) = &mut dbg_info.value { - assert!(p.projection.is_empty()); - p.local = opt_info.local_0; - p.projection = opt_info.dbg_projection; - } - } - - trace!("block is now {:?}", bb.statements); - } - } - } -} - -struct LocalUseCounter { - local_uses: IndexVec<Local, usize>, -} - -impl LocalUseCounter { - fn get_local_uses(body: &Body<'_>) -> IndexVec<Local, usize> { - let mut counter = LocalUseCounter { local_uses: IndexVec::from_elem(0, &body.local_decls) }; - counter.visit_body(body); - counter.local_uses - } -} - -impl Visitor<'_> for LocalUseCounter { - fn visit_local(&mut self, local: Local, context: PlaceContext, _location: Location) { - if context.is_storage_marker() - || context == PlaceContext::NonUse(NonUseContext::VarDebugInfo) - { - return; - } - - self.local_uses[local] += 1; - } -} - -/// Match on: -/// ```ignore (MIR) -/// _LOCAL_INTO = ((_LOCAL_FROM as Variant).FIELD: TY); -/// ``` -fn match_get_variant_field<'tcx>( - stmt: &Statement<'tcx>, -) -> Option<(Local, Local, VarField<'tcx>, &'tcx List<PlaceElem<'tcx>>)> { - match &stmt.kind { - StatementKind::Assign(box ( - place_into, - Rvalue::Use(Operand::Copy(pf) | Operand::Move(pf)), - )) => { - let local_into = place_into.as_local()?; - let (local_from, vf) = match_variant_field_place(*pf)?; - Some((local_into, local_from, vf, pf.projection)) - } - _ => None, - } -} - -/// Match on: -/// ```ignore (MIR) -/// ((_LOCAL_FROM as Variant).FIELD: TY) = move _LOCAL_INTO; -/// ``` -fn match_set_variant_field<'tcx>(stmt: &Statement<'tcx>) -> Option<(Local, Local, VarField<'tcx>)> { - match &stmt.kind { - StatementKind::Assign(box (place_from, Rvalue::Use(Operand::Move(place_into)))) => { - let local_into = place_into.as_local()?; - let (local_from, vf) = match_variant_field_place(*place_from)?; - Some((local_into, local_from, vf)) - } - _ => None, - } -} - -/// Match on: -/// ```ignore (MIR) -/// discriminant(_LOCAL_TO_SET) = VAR_IDX; -/// ``` -fn match_set_discr(stmt: &Statement<'_>) -> Option<(Local, VariantIdx)> { - match &stmt.kind { - StatementKind::SetDiscriminant { place, variant_index } => { - Some((place.as_local()?, *variant_index)) - } - _ => None, - } -} - -#[derive(PartialEq, Debug)] -struct VarField<'tcx> { - field: Field, - field_ty: Ty<'tcx>, - var_idx: VariantIdx, -} - -/// Match on `((_LOCAL as Variant).FIELD: TY)`. -fn match_variant_field_place(place: Place<'_>) -> Option<(Local, VarField<'_>)> { - match place.as_ref() { - PlaceRef { - local, - projection: &[ProjectionElem::Downcast(_, var_idx), ProjectionElem::Field(field, ty)], - } => Some((local, VarField { field, field_ty: ty, var_idx })), - _ => None, - } -} - -/// Simplifies `SwitchInt(_) -> [targets]`, -/// where all the `targets` have the same form, -/// into `goto -> target_first`. -pub struct SimplifyBranchSame; - -impl<'tcx> MirPass<'tcx> for SimplifyBranchSame { - fn run_pass(&self, tcx: TyCtxt<'tcx>, body: &mut Body<'tcx>) { - // This optimization is disabled by default for now due to - // soundness concerns; see issue #89485 and PR #89489. - if !tcx.sess.opts.unstable_opts.unsound_mir_opts { - return; - } - - trace!("Running SimplifyBranchSame on {:?}", body.source); - let finder = SimplifyBranchSameOptimizationFinder { body, tcx }; - let opts = finder.find(); - - let did_remove_blocks = opts.len() > 0; - for opt in opts.iter() { - trace!("SUCCESS: Applying optimization {:?}", opt); - // Replace `SwitchInt(..) -> [bb_first, ..];` with a `goto -> bb_first;`. - body.basic_blocks_mut()[opt.bb_to_opt_terminator].terminator_mut().kind = - TerminatorKind::Goto { target: opt.bb_to_goto }; - } - - if did_remove_blocks { - // We have dead blocks now, so remove those. - simplify::remove_dead_blocks(tcx, body); - } - } -} - -#[derive(Debug)] -struct SimplifyBranchSameOptimization { - /// All basic blocks are equal so go to this one - bb_to_goto: BasicBlock, - /// Basic block where the terminator can be simplified to a goto - bb_to_opt_terminator: BasicBlock, -} - -struct SwitchTargetAndValue { - target: BasicBlock, - // None in case of the `otherwise` case - value: Option<u128>, -} - -struct SimplifyBranchSameOptimizationFinder<'a, 'tcx> { - body: &'a Body<'tcx>, - tcx: TyCtxt<'tcx>, -} - -impl<'tcx> SimplifyBranchSameOptimizationFinder<'_, 'tcx> { - fn find(&self) -> Vec<SimplifyBranchSameOptimization> { - self.body - .basic_blocks - .iter_enumerated() - .filter_map(|(bb_idx, bb)| { - let (discr_switched_on, targets_and_values) = match &bb.terminator().kind { - TerminatorKind::SwitchInt { targets, discr, .. } => { - let targets_and_values: Vec<_> = targets.iter() - .map(|(val, target)| SwitchTargetAndValue { target, value: Some(val) }) - .chain(once(SwitchTargetAndValue { target: targets.otherwise(), value: None })) - .collect(); - (discr, targets_and_values) - }, - _ => return None, - }; - - // find the adt that has its discriminant read - // assuming this must be the last statement of the block - let adt_matched_on = match &bb.statements.last()?.kind { - StatementKind::Assign(box (place, rhs)) - if Some(*place) == discr_switched_on.place() => - { - match rhs { - Rvalue::Discriminant(adt_place) if adt_place.ty(self.body, self.tcx).ty.is_enum() => adt_place, - _ => { - trace!("NO: expected a discriminant read of an enum instead of: {:?}", rhs); - return None; - } - } - } - other => { - trace!("NO: expected an assignment of a discriminant read to a place. Found: {:?}", other); - return None - }, - }; - - let mut iter_bbs_reachable = targets_and_values - .iter() - .map(|target_and_value| (target_and_value, &self.body.basic_blocks[target_and_value.target])) - .filter(|(_, bb)| { - // Reaching `unreachable` is UB so assume it doesn't happen. - bb.terminator().kind != TerminatorKind::Unreachable - }) - .peekable(); - - let bb_first = iter_bbs_reachable.peek().map_or(&targets_and_values[0], |(idx, _)| *idx); - let mut all_successors_equivalent = StatementEquality::TrivialEqual; - - // All successor basic blocks must be equal or contain statements that are pairwise considered equal. - for ((target_and_value_l,bb_l), (target_and_value_r,bb_r)) in iter_bbs_reachable.tuple_windows() { - let trivial_checks = bb_l.is_cleanup == bb_r.is_cleanup - && bb_l.terminator().kind == bb_r.terminator().kind - && bb_l.statements.len() == bb_r.statements.len(); - let statement_check = || { - bb_l.statements.iter().zip(&bb_r.statements).try_fold(StatementEquality::TrivialEqual, |acc,(l,r)| { - let stmt_equality = self.statement_equality(*adt_matched_on, &l, target_and_value_l, &r, target_and_value_r); - if matches!(stmt_equality, StatementEquality::NotEqual) { - // short circuit - None - } else { - Some(acc.combine(&stmt_equality)) - } - }) - .unwrap_or(StatementEquality::NotEqual) - }; - if !trivial_checks { - all_successors_equivalent = StatementEquality::NotEqual; - break; - } - all_successors_equivalent = all_successors_equivalent.combine(&statement_check()); - }; - - match all_successors_equivalent{ - StatementEquality::TrivialEqual => { - // statements are trivially equal, so just take first - trace!("Statements are trivially equal"); - Some(SimplifyBranchSameOptimization { - bb_to_goto: bb_first.target, - bb_to_opt_terminator: bb_idx, - }) - } - StatementEquality::ConsideredEqual(bb_to_choose) => { - trace!("Statements are considered equal"); - Some(SimplifyBranchSameOptimization { - bb_to_goto: bb_to_choose, - bb_to_opt_terminator: bb_idx, - }) - } - StatementEquality::NotEqual => { - trace!("NO: not all successors of basic block {:?} were equivalent", bb_idx); - None - } - } - }) - .collect() - } - - /// Tests if two statements can be considered equal - /// - /// Statements can be trivially equal if the kinds match. - /// But they can also be considered equal in the following case A: - /// ```ignore (MIR) - /// discriminant(_0) = 0; // bb1 - /// _0 = move _1; // bb2 - /// ``` - /// In this case the two statements are equal iff - /// - `_0` is an enum where the variant index 0 is fieldless, and - /// - bb1 was targeted by a switch where the discriminant of `_1` was switched on - fn statement_equality( - &self, - adt_matched_on: Place<'tcx>, - x: &Statement<'tcx>, - x_target_and_value: &SwitchTargetAndValue, - y: &Statement<'tcx>, - y_target_and_value: &SwitchTargetAndValue, - ) -> StatementEquality { - let helper = |rhs: &Rvalue<'tcx>, - place: &Place<'tcx>, - variant_index: VariantIdx, - switch_value: u128, - side_to_choose| { - let place_type = place.ty(self.body, self.tcx).ty; - let adt = match *place_type.kind() { - ty::Adt(adt, _) if adt.is_enum() => adt, - _ => return StatementEquality::NotEqual, - }; - // We need to make sure that the switch value that targets the bb with - // SetDiscriminant is the same as the variant discriminant. - let variant_discr = adt.discriminant_for_variant(self.tcx, variant_index).val; - if variant_discr != switch_value { - trace!( - "NO: variant discriminant {} does not equal switch value {}", - variant_discr, - switch_value - ); - return StatementEquality::NotEqual; - } - let variant_is_fieldless = adt.variant(variant_index).fields.is_empty(); - if !variant_is_fieldless { - trace!("NO: variant {:?} was not fieldless", variant_index); - return StatementEquality::NotEqual; - } - - match rhs { - Rvalue::Use(operand) if operand.place() == Some(adt_matched_on) => { - StatementEquality::ConsideredEqual(side_to_choose) - } - _ => { - trace!( - "NO: RHS of assignment was {:?}, but expected it to match the adt being matched on in the switch, which is {:?}", - rhs, - adt_matched_on - ); - StatementEquality::NotEqual - } - } - }; - match (&x.kind, &y.kind) { - // trivial case - (x, y) if x == y => StatementEquality::TrivialEqual, - - // check for case A - ( - StatementKind::Assign(box (_, rhs)), - &StatementKind::SetDiscriminant { ref place, variant_index }, - ) if y_target_and_value.value.is_some() => { - // choose basic block of x, as that has the assign - helper( - rhs, - place, - variant_index, - y_target_and_value.value.unwrap(), - x_target_and_value.target, - ) - } - ( - &StatementKind::SetDiscriminant { ref place, variant_index }, - &StatementKind::Assign(box (_, ref rhs)), - ) if x_target_and_value.value.is_some() => { - // choose basic block of y, as that has the assign - helper( - rhs, - place, - variant_index, - x_target_and_value.value.unwrap(), - y_target_and_value.target, - ) - } - _ => { - trace!("NO: statements `{:?}` and `{:?}` not considered equal", x, y); - StatementEquality::NotEqual - } - } - } -} - -#[derive(Copy, Clone, Eq, PartialEq)] -enum StatementEquality { - /// The two statements are trivially equal; same kind - TrivialEqual, - /// The two statements are considered equal, but may be of different kinds. The BasicBlock field is the basic block to jump to when performing the branch-same optimization. - /// For example, `_0 = _1` and `discriminant(_0) = discriminant(0)` are considered equal if 0 is a fieldless variant of an enum. But we don't want to jump to the basic block with the SetDiscriminant, as that is not legal if _1 is not the 0 variant index - ConsideredEqual(BasicBlock), - /// The two statements are not equal - NotEqual, -} - -impl StatementEquality { - fn combine(&self, other: &StatementEquality) -> StatementEquality { - use StatementEquality::*; - match (self, other) { - (TrivialEqual, TrivialEqual) => TrivialEqual, - (TrivialEqual, ConsideredEqual(b)) | (ConsideredEqual(b), TrivialEqual) => { - ConsideredEqual(*b) - } - (ConsideredEqual(b1), ConsideredEqual(b2)) => { - if b1 == b2 { - ConsideredEqual(*b1) - } else { - NotEqual - } - } - (_, NotEqual) | (NotEqual, _) => NotEqual, - } - } -} diff --git a/compiler/rustc_parse/src/errors.rs b/compiler/rustc_parse/src/errors.rs index 06b970ad979..40763da0bb5 100644 --- a/compiler/rustc_parse/src/errors.rs +++ b/compiler/rustc_parse/src/errors.rs @@ -337,7 +337,9 @@ pub(crate) struct IfExpressionMissingThenBlock { #[primary_span] pub if_span: Span, #[subdiagnostic] - pub sub: IfExpressionMissingThenBlockSub, + pub missing_then_block_sub: IfExpressionMissingThenBlockSub, + #[subdiagnostic] + pub let_else_sub: Option<IfExpressionLetSomeSub>, } #[derive(Subdiagnostic)] @@ -348,6 +350,13 @@ pub(crate) enum IfExpressionMissingThenBlockSub { AddThenBlock(#[primary_span] Span), } +#[derive(Subdiagnostic)] +#[help(parse_extra_if_in_let_else)] +pub(crate) struct IfExpressionLetSomeSub { + #[primary_span] + pub if_span: Span, +} + #[derive(Diagnostic)] #[diag(parse_if_expression_missing_condition)] pub(crate) struct IfExpressionMissingCondition { diff --git a/compiler/rustc_parse/src/lexer/unicode_chars.rs b/compiler/rustc_parse/src/lexer/unicode_chars.rs index 65479b341d7..34d003ccfa7 100644 --- a/compiler/rustc_parse/src/lexer/unicode_chars.rs +++ b/compiler/rustc_parse/src/lexer/unicode_chars.rs @@ -7,329 +7,331 @@ use rustc_errors::{Applicability, Diagnostic}; use rustc_span::{symbol::kw, BytePos, Pos, Span}; #[rustfmt::skip] // for line breaks -pub(crate) const UNICODE_ARRAY: &[(char, &str, char)] = &[ - (' ', "Line Separator", ' '), - (' ', "Paragraph Separator", ' '), - (' ', "Ogham Space mark", ' '), - (' ', "En Quad", ' '), - (' ', "Em Quad", ' '), - (' ', "En Space", ' '), - (' ', "Em Space", ' '), - (' ', "Three-Per-Em Space", ' '), - (' ', "Four-Per-Em Space", ' '), - (' ', "Six-Per-Em Space", ' '), - (' ', "Punctuation Space", ' '), - (' ', "Thin Space", ' '), - (' ', "Hair Space", ' '), - (' ', "Medium Mathematical Space", ' '), - (' ', "No-Break Space", ' '), - (' ', "Figure Space", ' '), - (' ', "Narrow No-Break Space", ' '), - (' ', "Ideographic Space", ' '), - - ('ߺ', "Nko Lajanyalan", '_'), - ('﹍', "Dashed Low Line", '_'), - ('﹎', "Centreline Low Line", '_'), - ('﹏', "Wavy Low Line", '_'), - ('＿', "Fullwidth Low Line", '_'), - - ('‐', "Hyphen", '-'), - ('‑', "Non-Breaking Hyphen", '-'), - ('‒', "Figure Dash", '-'), - ('–', "En Dash", '-'), - ('—', "Em Dash", '-'), - ('﹘', "Small Em Dash", '-'), - ('۔', "Arabic Full Stop", '-'), - ('⁃', "Hyphen Bullet", '-'), - ('˗', "Modifier Letter Minus Sign", '-'), - ('−', "Minus Sign", '-'), - ('➖', "Heavy Minus Sign", '-'), - ('Ⲻ', "Coptic Letter Dialect-P Ni", '-'), - ('ー', "Katakana-Hiragana Prolonged Sound Mark", '-'), - ('－', "Fullwidth Hyphen-Minus", '-'), - ('―', "Horizontal Bar", '-'), - ('─', "Box Drawings Light Horizontal", '-'), - ('━', "Box Drawings Heavy Horizontal", '-'), - ('㇐', "CJK Stroke H", '-'), - ('ꟷ', "Latin Epigraphic Letter Sideways I", '-'), - ('ᅳ', "Hangul Jungseong Eu", '-'), - ('ㅡ', "Hangul Letter Eu", '-'), - ('一', "CJK Unified Ideograph-4E00", '-'), - ('⼀', "Kangxi Radical One", '-'), - - ('؍', "Arabic Date Separator", ','), - ('٫', "Arabic Decimal Separator", ','), - ('‚', "Single Low-9 Quotation Mark", ','), - ('¸', "Cedilla", ','), - ('ꓹ', "Lisu Letter Tone Na Po", ','), - ('，', "Fullwidth Comma", ','), - - (';', "Greek Question Mark", ';'), - ('；', "Fullwidth Semicolon", ';'), - ('︔', "Presentation Form For Vertical Semicolon", ';'), - - ('ः', "Devanagari Sign Visarga", ':'), - ('ઃ', "Gujarati Sign Visarga", ':'), - ('：', "Fullwidth Colon", ':'), - ('։', "Armenian Full Stop", ':'), - ('܃', "Syriac Supralinear Colon", ':'), - ('܄', "Syriac Sublinear Colon", ':'), - ('᛬', "Runic Multiple Punctuation", ':'), - ('︰', "Presentation Form For Vertical Two Dot Leader", ':'), - ('᠃', "Mongolian Full Stop", ':'), - ('᠉', "Mongolian Manchu Full Stop", ':'), - ('⁚', "Two Dot Punctuation", ':'), - ('׃', "Hebrew Punctuation Sof Pasuq", ':'), - ('˸', "Modifier Letter Raised Colon", ':'), - ('꞉', "Modifier Letter Colon", ':'), - ('∶', "Ratio", ':'), - ('ː', "Modifier Letter Triangular Colon", ':'), - ('ꓽ', "Lisu Letter Tone Mya Jeu", ':'), - ('︓', "Presentation Form For Vertical Colon", ':'), - - ('！', "Fullwidth Exclamation Mark", '!'), - ('ǃ', "Latin Letter Retroflex Click", '!'), - ('ⵑ', "Tifinagh Letter Tuareg Yang", '!'), - ('︕', "Presentation Form For Vertical Exclamation Mark", '!'), - - ('ʔ', "Latin Letter Glottal Stop", '?'), - ('Ɂ', "Latin Capital Letter Glottal Stop", '?'), - ('ॽ', "Devanagari Letter Glottal Stop", '?'), - ('Ꭾ', "Cherokee Letter He", '?'), - ('ꛫ', "Bamum Letter Ntuu", '?'), - ('？', "Fullwidth Question Mark", '?'), - ('︖', "Presentation Form For Vertical Question Mark", '?'), - - ('𝅭', "Musical Symbol Combining Augmentation Dot", '.'), - ('․', "One Dot Leader", '.'), - ('܁', "Syriac Supralinear Full Stop", '.'), - ('܂', "Syriac Sublinear Full Stop", '.'), - ('꘎', "Vai Full Stop", '.'), - ('𐩐', "Kharoshthi Punctuation Dot", '.'), - ('٠', "Arabic-Indic Digit Zero", '.'), - ('۰', "Extended Arabic-Indic Digit Zero", '.'), - ('ꓸ', "Lisu Letter Tone Mya Ti", '.'), - ('·', "Middle Dot", '.'), - ('・', "Katakana Middle Dot", '.'), - ('･', "Halfwidth Katakana Middle Dot", '.'), - ('᛫', "Runic Single Punctuation", '.'), - ('·', "Greek Ano Teleia", '.'), - ('⸱', "Word Separator Middle Dot", '.'), - ('𐄁', "Aegean Word Separator Dot", '.'), - ('•', "Bullet", '.'), - ('‧', "Hyphenation Point", '.'), - ('∙', "Bullet Operator", '.'), - ('⋅', "Dot Operator", '.'), - ('ꞏ', "Latin Letter Sinological Dot", '.'), - ('ᐧ', "Canadian Syllabics Final Middle Dot", '.'), - ('ᐧ', "Canadian Syllabics Final Middle Dot", '.'), - ('．', "Fullwidth Full Stop", '.'), - ('。', "Ideographic Full Stop", '.'), - ('︒', "Presentation Form For Vertical Ideographic Full Stop", '.'), - - ('՝', "Armenian Comma", '\''), - ('＇', "Fullwidth Apostrophe", '\''), - ('‘', "Left Single Quotation Mark", '\''), - ('’', "Right Single Quotation Mark", '\''), - ('‛', "Single High-Reversed-9 Quotation Mark", '\''), - ('′', "Prime", '\''), - ('‵', "Reversed Prime", '\''), - ('՚', "Armenian Apostrophe", '\''), - ('׳', "Hebrew Punctuation Geresh", '\''), - ('`', "Grave Accent", '\''), - ('`', "Greek Varia", '\''), - ('｀', "Fullwidth Grave Accent", '\''), - ('´', "Acute Accent", '\''), - ('΄', "Greek Tonos", '\''), - ('´', "Greek Oxia", '\''), - ('᾽', "Greek Koronis", '\''), - ('᾿', "Greek Psili", '\''), - ('῾', "Greek Dasia", '\''), - ('ʹ', "Modifier Letter Prime", '\''), - ('ʹ', "Greek Numeral Sign", '\''), - ('ˈ', "Modifier Letter Vertical Line", '\''), - ('ˊ', "Modifier Letter Acute Accent", '\''), - ('ˋ', "Modifier Letter Grave Accent", '\''), - ('˴', "Modifier Letter Middle Grave Accent", '\''), - ('ʻ', "Modifier Letter Turned Comma", '\''), - ('ʽ', "Modifier Letter Reversed Comma", '\''), - ('ʼ', "Modifier Letter Apostrophe", '\''), - ('ʾ', "Modifier Letter Right Half Ring", '\''), - ('ꞌ', "Latin Small Letter Saltillo", '\''), - ('י', "Hebrew Letter Yod", '\''), - ('ߴ', "Nko High Tone Apostrophe", '\''), - ('ߵ', "Nko Low Tone Apostrophe", '\''), - ('ᑊ', "Canadian Syllabics West-Cree P", '\''), - ('ᛌ', "Runic Letter Short-Twig-Sol S", '\''), - ('𖽑', "Miao Sign Aspiration", '\''), - ('𖽒', "Miao Sign Reformed Voicing", '\''), - - ('᳓', "Vedic Sign Nihshvasa", '"'), - ('＂', "Fullwidth Quotation Mark", '"'), - ('“', "Left Double Quotation Mark", '"'), - ('”', "Right Double Quotation Mark", '"'), - ('‟', "Double High-Reversed-9 Quotation Mark", '"'), - ('″', "Double Prime", '"'), - ('‶', "Reversed Double Prime", '"'), - ('〃', "Ditto Mark", '"'), - ('״', "Hebrew Punctuation Gershayim", '"'), - ('˝', "Double Acute Accent", '"'), - ('ʺ', "Modifier Letter Double Prime", '"'), - ('˶', "Modifier Letter Middle Double Acute Accent", '"'), - ('˵', "Modifier Letter Middle Double Grave Accent", '"'), - ('ˮ', "Modifier Letter Double Apostrophe", '"'), - ('ײ', "Hebrew Ligature Yiddish Double Yod", '"'), - ('❞', "Heavy Double Comma Quotation Mark Ornament", '"'), - ('❝', "Heavy Double Turned Comma Quotation Mark Ornament", '"'), - - ('（', "Fullwidth Left Parenthesis", '('), - ('❨', "Medium Left Parenthesis Ornament", '('), - ('﴾', "Ornate Left Parenthesis", '('), - - ('）', "Fullwidth Right Parenthesis", ')'), - ('❩', "Medium Right Parenthesis Ornament", ')'), - ('﴿', "Ornate Right Parenthesis", ')'), - - ('［', "Fullwidth Left Square Bracket", '['), - ('❲', "Light Left Tortoise Shell Bracket Ornament", '['), - ('「', "Left Corner Bracket", '['), - ('『', "Left White Corner Bracket", '['), - ('【', "Left Black Lenticular Bracket", '['), - ('〔', "Left Tortoise Shell Bracket", '['), - ('〖', "Left White Lenticular Bracket", '['), - ('〘', "Left White Tortoise Shell Bracket", '['), - ('〚', "Left White Square Bracket", '['), - - ('］', "Fullwidth Right Square Bracket", ']'), - ('❳', "Light Right Tortoise Shell Bracket Ornament", ']'), - ('」', "Right Corner Bracket", ']'), - ('』', "Right White Corner Bracket", ']'), - ('】', "Right Black Lenticular Bracket", ']'), - ('〕', "Right Tortoise Shell Bracket", ']'), - ('〗', "Right White Lenticular Bracket", ']'), - ('〙', "Right White Tortoise Shell Bracket", ']'), - ('〛', "Right White Square Bracket", ']'), - - ('❴', "Medium Left Curly Bracket Ornament", '{'), - ('𝄔', "Musical Symbol Brace", '{'), - ('｛', "Fullwidth Left Curly Bracket", '{'), - - ('❵', "Medium Right Curly Bracket Ornament", '}'), - ('｝', "Fullwidth Right Curly Bracket", '}'), - - ('⁎', "Low Asterisk", '*'), - ('٭', "Arabic Five Pointed Star", '*'), - ('∗', "Asterisk Operator", '*'), - ('𐌟', "Old Italic Letter Ess", '*'), - ('＊', "Fullwidth Asterisk", '*'), - - ('᜵', "Philippine Single Punctuation", '/'), - ('⁁', "Caret Insertion Point", '/'), - ('∕', "Division Slash", '/'), - ('⁄', "Fraction Slash", '/'), - ('╱', "Box Drawings Light Diagonal Upper Right To Lower Left", '/'), - ('⟋', "Mathematical Rising Diagonal", '/'), - ('⧸', "Big Solidus", '/'), - ('𝈺', "Greek Instrumental Notation Symbol-47", '/'), - ('㇓', "CJK Stroke Sp", '/'), - ('〳', "Vertical Kana Repeat Mark Upper Half", '/'), - ('Ⳇ', "Coptic Capital Letter Old Coptic Esh", '/'), - ('ノ', "Katakana Letter No", '/'), - ('丿', "CJK Unified Ideograph-4E3F", '/'), - ('⼃', "Kangxi Radical Slash", '/'), - ('／', "Fullwidth Solidus", '/'), - - ('＼', "Fullwidth Reverse Solidus", '\\'), - ('﹨', "Small Reverse Solidus", '\\'), - ('∖', "Set Minus", '\\'), - ('⟍', "Mathematical Falling Diagonal", '\\'), - ('⧵', "Reverse Solidus Operator", '\\'), - ('⧹', "Big Reverse Solidus", '\\'), - ('⧹', "Greek Vocal Notation Symbol-16", '\\'), - ('⧹', "Greek Instrumental Symbol-48", '\\'), - ('㇔', "CJK Stroke D", '\\'), - ('丶', "CJK Unified Ideograph-4E36", '\\'), - ('⼂', "Kangxi Radical Dot", '\\'), - ('、', "Ideographic Comma", '\\'), - ('ヽ', "Katakana Iteration Mark", '\\'), - - ('ꝸ', "Latin Small Letter Um", '&'), - ('＆', "Fullwidth Ampersand", '&'), - - ('᛭', "Runic Cross Punctuation", '+'), - ('➕', "Heavy Plus Sign", '+'), - ('𐊛', "Lycian Letter H", '+'), - ('﬩', "Hebrew Letter Alternative Plus Sign", '+'), - ('＋', "Fullwidth Plus Sign", '+'), - - ('‹', "Single Left-Pointing Angle Quotation Mark", '<'), - ('❮', "Heavy Left-Pointing Angle Quotation Mark Ornament", '<'), - ('˂', "Modifier Letter Left Arrowhead", '<'), - ('𝈶', "Greek Instrumental Symbol-40", '<'), - ('ᐸ', "Canadian Syllabics Pa", '<'), - ('ᚲ', "Runic Letter Kauna", '<'), - ('❬', "Medium Left-Pointing Angle Bracket Ornament", '<'), - ('⟨', "Mathematical Left Angle Bracket", '<'), - ('〈', "Left-Pointing Angle Bracket", '<'), - ('〈', "Left Angle Bracket", '<'), - ('㇛', "CJK Stroke Pd", '<'), - ('く', "Hiragana Letter Ku", '<'), - ('𡿨', "CJK Unified Ideograph-21FE8", '<'), - ('《', "Left Double Angle Bracket", '<'), - ('＜', "Fullwidth Less-Than Sign", '<'), - - ('᐀', "Canadian Syllabics Hyphen", '='), - ('⹀', "Double Hyphen", '='), - ('゠', "Katakana-Hiragana Double Hyphen", '='), - ('꓿', "Lisu Punctuation Full Stop", '='), - ('＝', "Fullwidth Equals Sign", '='), - - ('›', "Single Right-Pointing Angle Quotation Mark", '>'), - ('❯', "Heavy Right-Pointing Angle Quotation Mark Ornament", '>'), - ('˃', "Modifier Letter Right Arrowhead", '>'), - ('𝈷', "Greek Instrumental Symbol-42", '>'), - ('ᐳ', "Canadian Syllabics Po", '>'), - ('𖼿', "Miao Letter Archaic Zza", '>'), - ('❭', "Medium Right-Pointing Angle Bracket Ornament", '>'), - ('⟩', "Mathematical Right Angle Bracket", '>'), - ('〉', "Right-Pointing Angle Bracket", '>'), - ('〉', "Right Angle Bracket", '>'), - ('》', "Right Double Angle Bracket", '>'), - ('＞', "Fullwidth Greater-Than Sign", '>'), +pub(crate) const UNICODE_ARRAY: &[(char, &str, &str)] = &[ + (' ', "Line Separator", " "), + (' ', "Paragraph Separator", " "), + (' ', "Ogham Space mark", " "), + (' ', "En Quad", " "), + (' ', "Em Quad", " "), + (' ', "En Space", " "), + (' ', "Em Space", " "), + (' ', "Three-Per-Em Space", " "), + (' ', "Four-Per-Em Space", " "), + (' ', "Six-Per-Em Space", " "), + (' ', "Punctuation Space", " "), + (' ', "Thin Space", " "), + (' ', "Hair Space", " "), + (' ', "Medium Mathematical Space", " "), + (' ', "No-Break Space", " "), + (' ', "Figure Space", " "), + (' ', "Narrow No-Break Space", " "), + (' ', "Ideographic Space", " "), + + ('ߺ', "Nko Lajanyalan", "_"), + ('﹍', "Dashed Low Line", "_"), + ('﹎', "Centreline Low Line", "_"), + ('﹏', "Wavy Low Line", "_"), + ('＿', "Fullwidth Low Line", "_"), + + ('‐', "Hyphen", "-"), + ('‑', "Non-Breaking Hyphen", "-"), + ('‒', "Figure Dash", "-"), + ('–', "En Dash", "-"), + ('—', "Em Dash", "-"), + ('﹘', "Small Em Dash", "-"), + ('۔', "Arabic Full Stop", "-"), + ('⁃', "Hyphen Bullet", "-"), + ('˗', "Modifier Letter Minus Sign", "-"), + ('−', "Minus Sign", "-"), + ('➖', "Heavy Minus Sign", "-"), + ('Ⲻ', "Coptic Letter Dialect-P Ni", "-"), + ('ー', "Katakana-Hiragana Prolonged Sound Mark", "-"), + ('－', "Fullwidth Hyphen-Minus", "-"), + ('―', "Horizontal Bar", "-"), + ('─', "Box Drawings Light Horizontal", "-"), + ('━', "Box Drawings Heavy Horizontal", "-"), + ('㇐', "CJK Stroke H", "-"), + ('ꟷ', "Latin Epigraphic Letter Sideways I", "-"), + ('ᅳ', "Hangul Jungseong Eu", "-"), + ('ㅡ', "Hangul Letter Eu", "-"), + ('一', "CJK Unified Ideograph-4E00", "-"), + ('⼀', "Kangxi Radical One", "-"), + + ('؍', "Arabic Date Separator", ","), + ('٫', "Arabic Decimal Separator", ","), + ('‚', "Single Low-9 Quotation Mark", ","), + ('¸', "Cedilla", ","), + ('ꓹ', "Lisu Letter Tone Na Po", ","), + ('，', "Fullwidth Comma", ","), + + (';', "Greek Question Mark", ";"), + ('；', "Fullwidth Semicolon", ";"), + ('︔', "Presentation Form For Vertical Semicolon", ";"), + + ('ः', "Devanagari Sign Visarga", ":"), + ('ઃ', "Gujarati Sign Visarga", ":"), + ('：', "Fullwidth Colon", ":"), + ('։', "Armenian Full Stop", ":"), + ('܃', "Syriac Supralinear Colon", ":"), + ('܄', "Syriac Sublinear Colon", ":"), + ('᛬', "Runic Multiple Punctuation", ":"), + ('︰', "Presentation Form For Vertical Two Dot Leader", ":"), + ('᠃', "Mongolian Full Stop", ":"), + ('᠉', "Mongolian Manchu Full Stop", ":"), + ('⁚', "Two Dot Punctuation", ":"), + ('׃', "Hebrew Punctuation Sof Pasuq", ":"), + ('˸', "Modifier Letter Raised Colon", ":"), + ('꞉', "Modifier Letter Colon", ":"), + ('∶', "Ratio", ":"), + ('ː', "Modifier Letter Triangular Colon", ":"), + ('ꓽ', "Lisu Letter Tone Mya Jeu", ":"), + ('︓', "Presentation Form For Vertical Colon", ":"), + + ('！', "Fullwidth Exclamation Mark", "!"), + ('ǃ', "Latin Letter Retroflex Click", "!"), + ('ⵑ', "Tifinagh Letter Tuareg Yang", "!"), + ('︕', "Presentation Form For Vertical Exclamation Mark", "!"), + + ('ʔ', "Latin Letter Glottal Stop", "?"), + ('Ɂ', "Latin Capital Letter Glottal Stop", "?"), + ('ॽ', "Devanagari Letter Glottal Stop", "?"), + ('Ꭾ', "Cherokee Letter He", "?"), + ('ꛫ', "Bamum Letter Ntuu", "?"), + ('？', "Fullwidth Question Mark", "?"), + ('︖', "Presentation Form For Vertical Question Mark", "?"), + + ('𝅭', "Musical Symbol Combining Augmentation Dot", "."), + ('․', "One Dot Leader", "."), + ('܁', "Syriac Supralinear Full Stop", "."), + ('܂', "Syriac Sublinear Full Stop", "."), + ('꘎', "Vai Full Stop", "."), + ('𐩐', "Kharoshthi Punctuation Dot", "."), + ('٠', "Arabic-Indic Digit Zero", "."), + ('۰', "Extended Arabic-Indic Digit Zero", "."), + ('ꓸ', "Lisu Letter Tone Mya Ti", "."), + ('·', "Middle Dot", "."), + ('・', "Katakana Middle Dot", "."), + ('･', "Halfwidth Katakana Middle Dot", "."), + ('᛫', "Runic Single Punctuation", "."), + ('·', "Greek Ano Teleia", "."), + ('⸱', "Word Separator Middle Dot", "."), + ('𐄁', "Aegean Word Separator Dot", "."), + ('•', "Bullet", "."), + ('‧', "Hyphenation Point", "."), + ('∙', "Bullet Operator", "."), + ('⋅', "Dot Operator", "."), + ('ꞏ', "Latin Letter Sinological Dot", "."), + ('ᐧ', "Canadian Syllabics Final Middle Dot", "."), + ('ᐧ', "Canadian Syllabics Final Middle Dot", "."), + ('．', "Fullwidth Full Stop", "."), + ('。', "Ideographic Full Stop", "."), + ('︒', "Presentation Form For Vertical Ideographic Full Stop", "."), + + ('՝', "Armenian Comma", "\'"), + ('＇', "Fullwidth Apostrophe", "\'"), + ('‘', "Left Single Quotation Mark", "\'"), + ('’', "Right Single Quotation Mark", "\'"), + ('‛', "Single High-Reversed-9 Quotation Mark", "\'"), + ('′', "Prime", "\'"), + ('‵', "Reversed Prime", "\'"), + ('՚', "Armenian Apostrophe", "\'"), + ('׳', "Hebrew Punctuation Geresh", "\'"), + ('`', "Grave Accent", "\'"), + ('`', "Greek Varia", "\'"), + ('｀', "Fullwidth Grave Accent", "\'"), + ('´', "Acute Accent", "\'"), + ('΄', "Greek Tonos", "\'"), + ('´', "Greek Oxia", "\'"), + ('᾽', "Greek Koronis", "\'"), + ('᾿', "Greek Psili", "\'"), + ('῾', "Greek Dasia", "\'"), + ('ʹ', "Modifier Letter Prime", "\'"), + ('ʹ', "Greek Numeral Sign", "\'"), + ('ˈ', "Modifier Letter Vertical Line", "\'"), + ('ˊ', "Modifier Letter Acute Accent", "\'"), + ('ˋ', "Modifier Letter Grave Accent", "\'"), + ('˴', "Modifier Letter Middle Grave Accent", "\'"), + ('ʻ', "Modifier Letter Turned Comma", "\'"), + ('ʽ', "Modifier Letter Reversed Comma", "\'"), + ('ʼ', "Modifier Letter Apostrophe", "\'"), + ('ʾ', "Modifier Letter Right Half Ring", "\'"), + ('ꞌ', "Latin Small Letter Saltillo", "\'"), + ('י', "Hebrew Letter Yod", "\'"), + ('ߴ', "Nko High Tone Apostrophe", "\'"), + ('ߵ', "Nko Low Tone Apostrophe", "\'"), + ('ᑊ', "Canadian Syllabics West-Cree P", "\'"), + ('ᛌ', "Runic Letter Short-Twig-Sol S", "\'"), + ('𖽑', "Miao Sign Aspiration", "\'"), + ('𖽒', "Miao Sign Reformed Voicing", "\'"), + + ('᳓', "Vedic Sign Nihshvasa", "\""), + ('＂', "Fullwidth Quotation Mark", "\""), + ('“', "Left Double Quotation Mark", "\""), + ('”', "Right Double Quotation Mark", "\""), + ('‟', "Double High-Reversed-9 Quotation Mark", "\""), + ('″', "Double Prime", "\""), + ('‶', "Reversed Double Prime", "\""), + ('〃', "Ditto Mark", "\""), + ('״', "Hebrew Punctuation Gershayim", "\""), + ('˝', "Double Acute Accent", "\""), + ('ʺ', "Modifier Letter Double Prime", "\""), + ('˶', "Modifier Letter Middle Double Acute Accent", "\""), + ('˵', "Modifier Letter Middle Double Grave Accent", "\""), + ('ˮ', "Modifier Letter Double Apostrophe", "\""), + ('ײ', "Hebrew Ligature Yiddish Double Yod", "\""), + ('❞', "Heavy Double Comma Quotation Mark Ornament", "\""), + ('❝', "Heavy Double Turned Comma Quotation Mark Ornament", "\""), + + ('（', "Fullwidth Left Parenthesis", "("), + ('❨', "Medium Left Parenthesis Ornament", "("), + ('﴾', "Ornate Left Parenthesis", "("), + + ('）', "Fullwidth Right Parenthesis", ")"), + ('❩', "Medium Right Parenthesis Ornament", ")"), + ('﴿', "Ornate Right Parenthesis", ")"), + + ('［', "Fullwidth Left Square Bracket", "["), + ('❲', "Light Left Tortoise Shell Bracket Ornament", "["), + ('「', "Left Corner Bracket", "["), + ('『', "Left White Corner Bracket", "["), + ('【', "Left Black Lenticular Bracket", "["), + ('〔', "Left Tortoise Shell Bracket", "["), + ('〖', "Left White Lenticular Bracket", "["), + ('〘', "Left White Tortoise Shell Bracket", "["), + ('〚', "Left White Square Bracket", "["), + + ('］', "Fullwidth Right Square Bracket", "]"), + ('❳', "Light Right Tortoise Shell Bracket Ornament", "]"), + ('」', "Right Corner Bracket", "]"), + ('』', "Right White Corner Bracket", "]"), + ('】', "Right Black Lenticular Bracket", "]"), + ('〕', "Right Tortoise Shell Bracket", "]"), + ('〗', "Right White Lenticular Bracket", "]"), + ('〙', "Right White Tortoise Shell Bracket", "]"), + ('〛', "Right White Square Bracket", "]"), + + ('❴', "Medium Left Curly Bracket Ornament", "{"), + ('𝄔', "Musical Symbol Brace", "{"), + ('｛', "Fullwidth Left Curly Bracket", "{"), + + ('❵', "Medium Right Curly Bracket Ornament", "}"), + ('｝', "Fullwidth Right Curly Bracket", "}"), + + ('⁎', "Low Asterisk", "*"), + ('٭', "Arabic Five Pointed Star", "*"), + ('∗', "Asterisk Operator", "*"), + ('𐌟', "Old Italic Letter Ess", "*"), + ('＊', "Fullwidth Asterisk", "*"), + + ('᜵', "Philippine Single Punctuation", "/"), + ('⁁', "Caret Insertion Point", "/"), + ('∕', "Division Slash", "/"), + ('⁄', "Fraction Slash", "/"), + ('╱', "Box Drawings Light Diagonal Upper Right To Lower Left", "/"), + ('⟋', "Mathematical Rising Diagonal", "/"), + ('⧸', "Big Solidus", "/"), + ('𝈺', "Greek Instrumental Notation Symbol-47", "/"), + ('㇓', "CJK Stroke Sp", "/"), + ('〳', "Vertical Kana Repeat Mark Upper Half", "/"), + ('Ⳇ', "Coptic Capital Letter Old Coptic Esh", "/"), + ('ノ', "Katakana Letter No", "/"), + ('丿', "CJK Unified Ideograph-4E3F", "/"), + ('⼃', "Kangxi Radical Slash", "/"), + ('／', "Fullwidth Solidus", "/"), + + ('＼', "Fullwidth Reverse Solidus", "\\"), + ('﹨', "Small Reverse Solidus", "\\"), + ('∖', "Set Minus", "\\"), + ('⟍', "Mathematical Falling Diagonal", "\\"), + ('⧵', "Reverse Solidus Operator", "\\"), + ('⧹', "Big Reverse Solidus", "\\"), + ('⧹', "Greek Vocal Notation Symbol-16", "\\"), + ('⧹', "Greek Instrumental Symbol-48", "\\"), + ('㇔', "CJK Stroke D", "\\"), + ('丶', "CJK Unified Ideograph-4E36", "\\"), + ('⼂', "Kangxi Radical Dot", "\\"), + ('、', "Ideographic Comma", "\\"), + ('ヽ', "Katakana Iteration Mark", "\\"), + + ('ꝸ', "Latin Small Letter Um", "&"), + ('＆', "Fullwidth Ampersand", "&"), + + ('᛭', "Runic Cross Punctuation", "+"), + ('➕', "Heavy Plus Sign", "+"), + ('𐊛', "Lycian Letter H", "+"), + ('﬩', "Hebrew Letter Alternative Plus Sign", "+"), + ('＋', "Fullwidth Plus Sign", "+"), + + ('‹', "Single Left-Pointing Angle Quotation Mark", "<"), + ('❮', "Heavy Left-Pointing Angle Quotation Mark Ornament", "<"), + ('˂', "Modifier Letter Left Arrowhead", "<"), + ('𝈶', "Greek Instrumental Symbol-40", "<"), + ('ᐸ', "Canadian Syllabics Pa", "<"), + ('ᚲ', "Runic Letter Kauna", "<"), + ('❬', "Medium Left-Pointing Angle Bracket Ornament", "<"), + ('⟨', "Mathematical Left Angle Bracket", "<"), + ('〈', "Left-Pointing Angle Bracket", "<"), + ('〈', "Left Angle Bracket", "<"), + ('㇛', "CJK Stroke Pd", "<"), + ('く', "Hiragana Letter Ku", "<"), + ('𡿨', "CJK Unified Ideograph-21FE8", "<"), + ('《', "Left Double Angle Bracket", "<"), + ('＜', "Fullwidth Less-Than Sign", "<"), + + ('᐀', "Canadian Syllabics Hyphen", "="), + ('⹀', "Double Hyphen", "="), + ('゠', "Katakana-Hiragana Double Hyphen", "="), + ('꓿', "Lisu Punctuation Full Stop", "="), + ('＝', "Fullwidth Equals Sign", "="), + + ('›', "Single Right-Pointing Angle Quotation Mark", ">"), + ('❯', "Heavy Right-Pointing Angle Quotation Mark Ornament", ">"), + ('˃', "Modifier Letter Right Arrowhead", ">"), + ('𝈷', "Greek Instrumental Symbol-42", ">"), + ('ᐳ', "Canadian Syllabics Po", ">"), + ('𖼿', "Miao Letter Archaic Zza", ">"), + ('❭', "Medium Right-Pointing Angle Bracket Ornament", ">"), + ('⟩', "Mathematical Right Angle Bracket", ">"), + ('〉', "Right-Pointing Angle Bracket", ">"), + ('〉', "Right Angle Bracket", ">"), + ('》', "Right Double Angle Bracket", ">"), + ('＞', "Fullwidth Greater-Than Sign", ">"), + ('⩵', "Two Consecutive Equals Signs", "==") ]; // FIXME: the lexer could be used to turn the ASCII version of unicode homoglyphs, instead of // keeping the substitution token in this table. Ideally, this should be inside `rustc_lexer`. // However, we should first remove compound tokens like `<<` from `rustc_lexer`, and then add // fancier error recovery to it, as there will be less overall work to do this way. -const ASCII_ARRAY: &[(char, &str, Option<token::TokenKind>)] = &[ - (' ', "Space", None), - ('_', "Underscore", Some(token::Ident(kw::Underscore, false))), - ('-', "Minus/Hyphen", Some(token::BinOp(token::Minus))), - (',', "Comma", Some(token::Comma)), - (';', "Semicolon", Some(token::Semi)), - (':', "Colon", Some(token::Colon)), - ('!', "Exclamation Mark", Some(token::Not)), - ('?', "Question Mark", Some(token::Question)), - ('.', "Period", Some(token::Dot)), - ('(', "Left Parenthesis", Some(token::OpenDelim(Delimiter::Parenthesis))), - (')', "Right Parenthesis", Some(token::CloseDelim(Delimiter::Parenthesis))), - ('[', "Left Square Bracket", Some(token::OpenDelim(Delimiter::Bracket))), - (']', "Right Square Bracket", Some(token::CloseDelim(Delimiter::Bracket))), - ('{', "Left Curly Brace", Some(token::OpenDelim(Delimiter::Brace))), - ('}', "Right Curly Brace", Some(token::CloseDelim(Delimiter::Brace))), - ('*', "Asterisk", Some(token::BinOp(token::Star))), - ('/', "Slash", Some(token::BinOp(token::Slash))), - ('\\', "Backslash", None), - ('&', "Ampersand", Some(token::BinOp(token::And))), - ('+', "Plus Sign", Some(token::BinOp(token::Plus))), - ('<', "Less-Than Sign", Some(token::Lt)), - ('=', "Equals Sign", Some(token::Eq)), - ('>', "Greater-Than Sign", Some(token::Gt)), +const ASCII_ARRAY: &[(&str, &str, Option<token::TokenKind>)] = &[ + (" ", "Space", None), + ("_", "Underscore", Some(token::Ident(kw::Underscore, false))), + ("-", "Minus/Hyphen", Some(token::BinOp(token::Minus))), + (",", "Comma", Some(token::Comma)), + (";", "Semicolon", Some(token::Semi)), + (":", "Colon", Some(token::Colon)), + ("!", "Exclamation Mark", Some(token::Not)), + ("?", "Question Mark", Some(token::Question)), + (".", "Period", Some(token::Dot)), + ("(", "Left Parenthesis", Some(token::OpenDelim(Delimiter::Parenthesis))), + (")", "Right Parenthesis", Some(token::CloseDelim(Delimiter::Parenthesis))), + ("[", "Left Square Bracket", Some(token::OpenDelim(Delimiter::Bracket))), + ("]", "Right Square Bracket", Some(token::CloseDelim(Delimiter::Bracket))), + ("{", "Left Curly Brace", Some(token::OpenDelim(Delimiter::Brace))), + ("}", "Right Curly Brace", Some(token::CloseDelim(Delimiter::Brace))), + ("*", "Asterisk", Some(token::BinOp(token::Star))), + ("/", "Slash", Some(token::BinOp(token::Slash))), + ("\\", "Backslash", None), + ("&", "Ampersand", Some(token::BinOp(token::And))), + ("+", "Plus Sign", Some(token::BinOp(token::Plus))), + ("<", "Less-Than Sign", Some(token::Lt)), + ("=", "Equals Sign", Some(token::Eq)), + ("==", "Double Equals Sign", Some(token::EqEq)), + (">", "Greater-Than Sign", Some(token::Gt)), // FIXME: Literals are already lexed by this point, so we can't recover gracefully just by // spitting the correct token out. - ('\'', "Single Quote", None), - ('"', "Quotation Mark", None), + ("\'", "Single Quote", None), + ("\"", "Quotation Mark", None), ]; pub(super) fn check_for_substitution<'a>( @@ -339,11 +341,11 @@ pub(super) fn check_for_substitution<'a>( err: &mut Diagnostic, count: usize, ) -> Option<token::TokenKind> { - let &(_u_char, u_name, ascii_char) = UNICODE_ARRAY.iter().find(|&&(c, _, _)| c == ch)?; + let &(_, u_name, ascii_str) = UNICODE_ARRAY.iter().find(|&&(c, _, _)| c == ch)?; let span = Span::with_root_ctxt(pos, pos + Pos::from_usize(ch.len_utf8() * count)); - let Some((_ascii_char, ascii_name, token)) = ASCII_ARRAY.iter().find(|&&(c, _, _)| c == ascii_char) else { + let Some((_, ascii_name, token)) = ASCII_ARRAY.iter().find(|&&(s, _, _)| s == ascii_str) else { let msg = format!("substitution character not found for '{}'", ch); reader.sess.span_diagnostic.span_bug_no_panic(span, &msg); return None; @@ -354,7 +356,7 @@ pub(super) fn check_for_substitution<'a>( let msg = format!( "Unicode characters '“' (Left Double Quotation Mark) and \ '”' (Right Double Quotation Mark) look like '{}' ({}), but are not", - ascii_char, ascii_name + ascii_str, ascii_name ); err.span_suggestion( Span::with_root_ctxt( @@ -368,12 +370,12 @@ pub(super) fn check_for_substitution<'a>( } else { let msg = format!( "Unicode character '{}' ({}) looks like '{}' ({}), but it is not", - ch, u_name, ascii_char, ascii_name + ch, u_name, ascii_str, ascii_name ); err.span_suggestion( span, &msg, - ascii_char.to_string().repeat(count), + ascii_str.to_string().repeat(count), Applicability::MaybeIncorrect, ); } diff --git a/compiler/rustc_parse/src/parser/diagnostics.rs b/compiler/rustc_parse/src/parser/diagnostics.rs index 4c918c6702e..eda7046c748 100644 --- a/compiler/rustc_parse/src/parser/diagnostics.rs +++ b/compiler/rustc_parse/src/parser/diagnostics.rs @@ -2372,7 +2372,7 @@ impl<'a> Parser<'a> { /// Some special error handling for the "top-level" patterns in a match arm, /// `for` loop, `let`, &c. (in contrast to subpatterns within such). - pub(crate) fn maybe_recover_colon_colon_in_pat_typo( + pub(crate) fn maybe_recover_colon_colon_in_pat_typo_or_anon_enum( &mut self, mut first_pat: P<Pat>, expected: Expected, @@ -2383,26 +2383,41 @@ impl<'a> Parser<'a> { if !matches!(first_pat.kind, PatKind::Ident(_, _, None) | PatKind::Path(..)) || !self.look_ahead(1, |token| token.is_ident() && !token.is_reserved_ident()) { + let mut snapshot_type = self.create_snapshot_for_diagnostic(); + snapshot_type.bump(); // `:` + match snapshot_type.parse_ty() { + Err(inner_err) => { + inner_err.cancel(); + } + Ok(ty) => { + let Err(mut err) = self.expected_one_of_not_found(&[], &[]) else { + return first_pat; + }; + err.span_label(ty.span, "specifying the type of a pattern isn't supported"); + self.restore_snapshot(snapshot_type); + let span = first_pat.span.to(ty.span); + first_pat = self.mk_pat(span, PatKind::Wild); + err.emit(); + } + } return first_pat; } // The pattern looks like it might be a path with a `::` -> `:` typo: // `match foo { bar:baz => {} }` - let span = self.token.span; + let colon_span = self.token.span; // We only emit "unexpected `:`" error here if we can successfully parse the // whole pattern correctly in that case. - let snapshot = self.create_snapshot_for_diagnostic(); + let mut snapshot_pat = self.create_snapshot_for_diagnostic(); + let mut snapshot_type = self.create_snapshot_for_diagnostic(); // Create error for "unexpected `:`". match self.expected_one_of_not_found(&[], &[]) { Err(mut err) => { - self.bump(); // Skip the `:`. - match self.parse_pat_no_top_alt(expected) { + snapshot_pat.bump(); // Skip the `:`. + snapshot_type.bump(); // Skip the `:`. + match snapshot_pat.parse_pat_no_top_alt(expected) { Err(inner_err) => { - // Carry on as if we had not done anything, callers will emit a - // reasonable error. inner_err.cancel(); - err.cancel(); - self.restore_snapshot(snapshot); } Ok(mut pat) => { // We've parsed the rest of the pattern. @@ -2466,8 +2481,8 @@ impl<'a> Parser<'a> { _ => {} } if show_sugg { - err.span_suggestion( - span, + err.span_suggestion_verbose( + colon_span.until(self.look_ahead(1, |t| t.span)), "maybe write a path separator here", "::", Applicability::MaybeIncorrect, @@ -2475,13 +2490,24 @@ impl<'a> Parser<'a> { } else { first_pat = self.mk_pat(new_span, PatKind::Wild); } - err.emit(); + self.restore_snapshot(snapshot_pat); } } + match snapshot_type.parse_ty() { + Err(inner_err) => { + inner_err.cancel(); + } + Ok(ty) => { + err.span_label(ty.span, "specifying the type of a pattern isn't supported"); + self.restore_snapshot(snapshot_type); + let new_span = first_pat.span.to(ty.span); + first_pat = self.mk_pat(new_span, PatKind::Wild); + } + } + err.emit(); } _ => { // Carry on as if we had not done anything. This should be unreachable. - self.restore_snapshot(snapshot); } }; first_pat diff --git a/compiler/rustc_parse/src/parser/expr.rs b/compiler/rustc_parse/src/parser/expr.rs index d58afcd4c9f..3225a309a31 100644 --- a/compiler/rustc_parse/src/parser/expr.rs +++ b/compiler/rustc_parse/src/parser/expr.rs @@ -11,15 +11,15 @@ use crate::errors::{ ComparisonOrShiftInterpretedAsGenericSugg, DoCatchSyntaxRemoved, DotDotDot, EqFieldInit, ExpectedElseBlock, ExpectedEqForLetExpr, ExpectedExpressionFoundLet, FieldExpressionWithGeneric, FloatLiteralRequiresIntegerPart, FoundExprWouldBeStmt, - IfExpressionMissingCondition, IfExpressionMissingThenBlock, IfExpressionMissingThenBlockSub, - InvalidBlockMacroSegment, InvalidComparisonOperator, InvalidComparisonOperatorSub, - InvalidInterpolatedExpression, InvalidLiteralSuffixOnTupleIndex, InvalidLogicalOperator, - InvalidLogicalOperatorSub, LabeledLoopInBreak, LeadingPlusNotSupported, LeftArrowOperator, - LifetimeInBorrowExpression, MacroInvocationWithQualifiedPath, MalformedLoopLabel, - MatchArmBodyWithoutBraces, MatchArmBodyWithoutBracesSugg, MissingCommaAfterMatchArm, - MissingDotDot, MissingInInForLoop, MissingInInForLoopSub, MissingSemicolonBeforeArray, - NoFieldsForFnCall, NotAsNegationOperator, NotAsNegationOperatorSub, - OuterAttributeNotAllowedOnIfElse, ParenthesesWithStructFields, + IfExpressionLetSomeSub, IfExpressionMissingCondition, IfExpressionMissingThenBlock, + IfExpressionMissingThenBlockSub, InvalidBlockMacroSegment, InvalidComparisonOperator, + InvalidComparisonOperatorSub, InvalidInterpolatedExpression, InvalidLiteralSuffixOnTupleIndex, + InvalidLogicalOperator, InvalidLogicalOperatorSub, LabeledLoopInBreak, LeadingPlusNotSupported, + LeftArrowOperator, LifetimeInBorrowExpression, MacroInvocationWithQualifiedPath, + MalformedLoopLabel, MatchArmBodyWithoutBraces, MatchArmBodyWithoutBracesSugg, + MissingCommaAfterMatchArm, MissingDotDot, MissingInInForLoop, MissingInInForLoopSub, + MissingSemicolonBeforeArray, NoFieldsForFnCall, NotAsNegationOperator, + NotAsNegationOperatorSub, OuterAttributeNotAllowedOnIfElse, ParenthesesWithStructFields, RequireColonAfterLabeledExpression, ShiftInterpretedAsGeneric, StructLiteralNotAllowedHere, StructLiteralNotAllowedHereSugg, TildeAsUnaryOperator, UnexpectedIfWithIf, UnexpectedTokenAfterLabel, UnexpectedTokenAfterLabelSugg, WrapExpressionInParentheses, @@ -1353,9 +1353,6 @@ impl<'a> Parser<'a> { err.span_label(sp, "while parsing this `loop` expression"); err }) - } else if self.eat_keyword(kw::Continue) { - let kind = ExprKind::Continue(self.eat_label()); - Ok(self.mk_expr(lo.to(self.prev_token.span), kind)) } else if self.eat_keyword(kw::Match) { let match_sp = self.prev_token.span; self.parse_match_expr().map_err(|mut err| { @@ -1379,6 +1376,8 @@ impl<'a> Parser<'a> { self.parse_try_block(lo) } else if self.eat_keyword(kw::Return) { self.parse_return_expr() + } else if self.eat_keyword(kw::Continue) { + self.parse_continue_expr(lo) } else if self.eat_keyword(kw::Break) { self.parse_break_expr() } else if self.eat_keyword(kw::Yield) { @@ -1715,10 +1714,10 @@ impl<'a> Parser<'a> { fn parse_break_expr(&mut self) -> PResult<'a, P<Expr>> { let lo = self.prev_token.span; let mut label = self.eat_label(); - let kind = if label.is_some() && self.token == token::Colon { + let kind = if self.token == token::Colon && let Some(label) = label.take() { // The value expression can be a labeled loop, see issue #86948, e.g.: // `loop { break 'label: loop { break 'label 42; }; }` - let lexpr = self.parse_labeled_expr(label.take().unwrap(), true)?; + let lexpr = self.parse_labeled_expr(label, true)?; self.sess.emit_err(LabeledLoopInBreak { span: lexpr.span, sub: WrapExpressionInParentheses { @@ -1730,8 +1729,8 @@ impl<'a> Parser<'a> { } else if self.token != token::OpenDelim(Delimiter::Brace) || !self.restrictions.contains(Restrictions::NO_STRUCT_LITERAL) { - let expr = self.parse_expr_opt()?; - if let Some(expr) = &expr { + let mut expr = self.parse_expr_opt()?; + if let Some(expr) = &mut expr { if label.is_some() && matches!( expr.kind, @@ -1749,7 +1748,19 @@ impl<'a> Parser<'a> { BuiltinLintDiagnostics::BreakWithLabelAndLoop(expr.span), ); } + + // Recover `break label aaaaa` + if self.may_recover() + && let ExprKind::Path(None, p) = &expr.kind + && let [segment] = &*p.segments + && let &ast::PathSegment { ident, args: None, .. } = segment + && let Some(next) = self.parse_expr_opt()? + { + label = Some(self.recover_ident_into_label(ident)); + *expr = next; + } } + expr } else { None @@ -1758,6 +1769,23 @@ impl<'a> Parser<'a> { self.maybe_recover_from_bad_qpath(expr) } + /// Parse `"continue" label?`. + fn parse_continue_expr(&mut self, lo: Span) -> PResult<'a, P<Expr>> { + let mut label = self.eat_label(); + + // Recover `continue label` -> `continue 'label` + if self.may_recover() + && label.is_none() + && let Some((ident, _)) = self.token.ident() + { + self.bump(); + label = Some(self.recover_ident_into_label(ident)); + } + + let kind = ExprKind::Continue(label); + Ok(self.mk_expr(lo.to(self.prev_token.span), kind)) + } + /// Parse `"yield" expr?`. fn parse_yield_expr(&mut self) -> PResult<'a, P<Expr>> { let lo = self.prev_token.span; @@ -2223,9 +2251,10 @@ impl<'a> Parser<'a> { if let ExprKind::Block(_, None) = right.kind => { self.sess.emit_err(IfExpressionMissingThenBlock { if_span: lo, - sub: IfExpressionMissingThenBlockSub::UnfinishedCondition( - cond_span.shrink_to_lo().to(*binop_span) - ), + missing_then_block_sub: + IfExpressionMissingThenBlockSub::UnfinishedCondition(cond_span.shrink_to_lo().to(*binop_span)), + let_else_sub: None, + }); std::mem::replace(right, this.mk_expr_err(binop_span.shrink_to_hi())) }, @@ -2251,9 +2280,15 @@ impl<'a> Parser<'a> { if let Some(block) = recover_block_from_condition(self) { block } else { + let let_else_sub = matches!(cond.kind, ExprKind::Let(..)) + .then(|| IfExpressionLetSomeSub { if_span: lo }); + self.sess.emit_err(IfExpressionMissingThenBlock { if_span: lo, - sub: IfExpressionMissingThenBlockSub::AddThenBlock(cond_span.shrink_to_hi()), + missing_then_block_sub: IfExpressionMissingThenBlockSub::AddThenBlock( + cond_span.shrink_to_hi(), + ), + let_else_sub, }); self.mk_block_err(cond_span.shrink_to_hi()) } @@ -3046,6 +3081,25 @@ impl<'a> Parser<'a> { false } + /// Converts an ident into 'label and emits an "expected a label, found an identifier" error. + fn recover_ident_into_label(&mut self, ident: Ident) -> Label { + // Convert `label` -> `'label`, + // so that nameres doesn't complain about non-existing label + let label = format!("'{}", ident.name); + let ident = Ident { name: Symbol::intern(&label), span: ident.span }; + + self.struct_span_err(ident.span, "expected a label, found an identifier") + .span_suggestion( + ident.span, + "labels start with a tick", + label, + Applicability::MachineApplicable, + ) + .emit(); + + Label { ident } + } + /// Parses `ident (COLON expr)?`. fn parse_expr_field(&mut self) -> PResult<'a, ExprField> { let attrs = self.parse_outer_attributes()?; diff --git a/compiler/rustc_parse/src/parser/pat.rs b/compiler/rustc_parse/src/parser/pat.rs index e73a17ced7d..e5411538eea 100644 --- a/compiler/rustc_parse/src/parser/pat.rs +++ b/compiler/rustc_parse/src/parser/pat.rs @@ -116,7 +116,8 @@ impl<'a> Parser<'a> { // Check if the user wrote `foo:bar` instead of `foo::bar`. if ra == RecoverColon::Yes { - first_pat = self.maybe_recover_colon_colon_in_pat_typo(first_pat, expected); + first_pat = + self.maybe_recover_colon_colon_in_pat_typo_or_anon_enum(first_pat, expected); } if let Some(leading_vert_span) = leading_vert_span { diff --git a/compiler/rustc_parse/src/parser/ty.rs b/compiler/rustc_parse/src/parser/ty.rs index 1766b0293de..25de0a9e750 100644 --- a/compiler/rustc_parse/src/parser/ty.rs +++ b/compiler/rustc_parse/src/parser/ty.rs @@ -11,6 +11,7 @@ use rustc_ast::{ self as ast, BareFnTy, FnRetTy, GenericBound, GenericBounds, GenericParam, Generics, Lifetime, MacCall, MutTy, Mutability, PolyTraitRef, TraitBoundModifier, TraitObjectSyntax, Ty, TyKind, }; +use rustc_ast_pretty::pprust; use rustc_errors::{pluralize, struct_span_err, Applicability, PResult}; use rustc_span::source_map::Span; use rustc_span::symbol::{kw, sym, Ident}; @@ -43,17 +44,24 @@ pub(super) enum AllowPlus { No, } -#[derive(PartialEq)] +#[derive(PartialEq, Clone, Copy)] pub(super) enum RecoverQPath { Yes, No, } +#[derive(PartialEq, Clone, Copy)] pub(super) enum RecoverQuestionMark { Yes, No, } +#[derive(PartialEq, Clone, Copy)] +pub(super) enum RecoverAnonEnum { + Yes, + No, +} + /// Signals whether parsing a type should recover `->`. /// /// More specifically, when parsing a function like: @@ -86,7 +94,7 @@ impl RecoverReturnSign { } // Is `...` (`CVarArgs`) legal at this level of type parsing? -#[derive(PartialEq)] +#[derive(PartialEq, Clone, Copy)] enum AllowCVariadic { Yes, No, @@ -111,6 +119,7 @@ impl<'a> Parser<'a> { RecoverReturnSign::Yes, None, RecoverQuestionMark::Yes, + RecoverAnonEnum::No, ) } @@ -125,6 +134,7 @@ impl<'a> Parser<'a> { RecoverReturnSign::Yes, Some(ty_params), RecoverQuestionMark::Yes, + RecoverAnonEnum::No, ) } @@ -139,6 +149,7 @@ impl<'a> Parser<'a> { RecoverReturnSign::Yes, None, RecoverQuestionMark::Yes, + RecoverAnonEnum::Yes, ) } @@ -156,6 +167,7 @@ impl<'a> Parser<'a> { RecoverReturnSign::Yes, None, RecoverQuestionMark::Yes, + RecoverAnonEnum::No, ) } @@ -169,6 +181,7 @@ impl<'a> Parser<'a> { RecoverReturnSign::Yes, None, RecoverQuestionMark::No, + RecoverAnonEnum::No, ) } @@ -180,6 +193,7 @@ impl<'a> Parser<'a> { RecoverReturnSign::Yes, None, RecoverQuestionMark::No, + RecoverAnonEnum::No, ) } @@ -192,6 +206,7 @@ impl<'a> Parser<'a> { RecoverReturnSign::OnlyFatArrow, None, RecoverQuestionMark::Yes, + RecoverAnonEnum::No, ) } @@ -211,6 +226,7 @@ impl<'a> Parser<'a> { recover_return_sign, None, RecoverQuestionMark::Yes, + RecoverAnonEnum::Yes, )?; FnRetTy::Ty(ty) } else if recover_return_sign.can_recover(&self.token.kind) { @@ -232,6 +248,7 @@ impl<'a> Parser<'a> { recover_return_sign, None, RecoverQuestionMark::Yes, + RecoverAnonEnum::Yes, )?; FnRetTy::Ty(ty) } else { @@ -247,6 +264,7 @@ impl<'a> Parser<'a> { recover_return_sign: RecoverReturnSign, ty_generics: Option<&Generics>, recover_question_mark: RecoverQuestionMark, + recover_anon_enum: RecoverAnonEnum, ) -> PResult<'a, P<Ty>> { let allow_qpath_recovery = recover_qpath == RecoverQPath::Yes; maybe_recover_from_interpolated_ty_qpath!(self, allow_qpath_recovery); @@ -325,14 +343,55 @@ impl<'a> Parser<'a> { let mut ty = self.mk_ty(span, kind); // Try to recover from use of `+` with incorrect priority. - if matches!(allow_plus, AllowPlus::Yes) { + if allow_plus == AllowPlus::Yes { self.maybe_recover_from_bad_type_plus(&ty)?; } else { self.maybe_report_ambiguous_plus(impl_dyn_multi, &ty); } - if let RecoverQuestionMark::Yes = recover_question_mark { + if RecoverQuestionMark::Yes == recover_question_mark { ty = self.maybe_recover_from_question_mark(ty); } + if recover_anon_enum == RecoverAnonEnum::Yes + && self.check_noexpect(&token::BinOp(token::Or)) + && self.look_ahead(1, |t| t.can_begin_type()) + { + let mut pipes = vec![self.token.span]; + let mut types = vec![ty]; + loop { + if !self.eat(&token::BinOp(token::Or)) { + break; + } + pipes.push(self.prev_token.span); + types.push(self.parse_ty_common( + allow_plus, + allow_c_variadic, + recover_qpath, + recover_return_sign, + ty_generics, + recover_question_mark, + RecoverAnonEnum::No, + )?); + } + let mut err = self.struct_span_err(pipes, "anonymous enums are not supported"); + for ty in &types { + err.span_label(ty.span, ""); + } + err.help(&format!( + "create a named `enum` and use it here instead:\nenum Name {{\n{}\n}}", + types + .iter() + .enumerate() + .map(|(i, t)| format!( + " Variant{}({}),", + i + 1, // Lets not confuse people with zero-indexing :) + pprust::to_string(|s| s.print_type(&t)), + )) + .collect::<Vec<_>>() + .join("\n"), + )); + err.emit(); + return Ok(self.mk_ty(lo.to(self.prev_token.span), TyKind::Err)); + } if allow_qpath_recovery { self.maybe_recover_from_bad_qpath(ty) } else { Ok(ty) } } diff --git a/compiler/rustc_passes/src/check_attr.rs b/compiler/rustc_passes/src/check_attr.rs index f9f9799d3e4..42329853259 100644 --- a/compiler/rustc_passes/src/check_attr.rs +++ b/compiler/rustc_passes/src/check_attr.rs @@ -6,11 +6,12 @@ use crate::errors::{ self, AttrApplication, DebugVisualizerUnreadable, InvalidAttrAtCrateLevel, ObjectLifetimeErr, - OnlyHasEffectOn, TransparentIncompatible, UnrecognizedReprHint, + OnlyHasEffectOn, ProcMacroDiffArguments, ProcMacroInvalidAbi, ProcMacroMissingArguments, + ProcMacroTypeError, ProcMacroUnsafe, TransparentIncompatible, UnrecognizedReprHint, }; use rustc_ast::{ast, AttrStyle, Attribute, LitKind, MetaItemKind, MetaItemLit, NestedMetaItem}; use rustc_data_structures::fx::FxHashMap; -use rustc_errors::{fluent, Applicability, MultiSpan}; +use rustc_errors::{fluent, Applicability, IntoDiagnosticArg, MultiSpan}; use rustc_expand::base::resolve_path; use rustc_feature::{AttributeDuplicates, AttributeType, BuiltinAttribute, BUILTIN_ATTRIBUTE_MAP}; use rustc_hir as hir; @@ -19,11 +20,12 @@ use rustc_hir::intravisit::{self, Visitor}; use rustc_hir::{ self, FnSig, ForeignItem, HirId, Item, ItemKind, TraitItem, CRATE_HIR_ID, CRATE_OWNER_ID, }; -use rustc_hir::{MethodKind, Target}; +use rustc_hir::{MethodKind, Target, Unsafety}; use rustc_middle::hir::nested_filter; use rustc_middle::middle::resolve_lifetime::ObjectLifetimeDefault; +use rustc_middle::ty::fast_reject::{DeepRejectCtxt, TreatParams}; use rustc_middle::ty::query::Providers; -use rustc_middle::ty::TyCtxt; +use rustc_middle::ty::{ParamEnv, TyCtxt}; use rustc_session::lint::builtin::{ CONFLICTING_REPR_HINTS, INVALID_DOC_ATTRIBUTES, UNUSED_ATTRIBUTES, }; @@ -31,6 +33,7 @@ use rustc_session::parse::feature_err; use rustc_span::symbol::{kw, sym, Symbol}; use rustc_span::{Span, DUMMY_SP}; use rustc_target::spec::abi::Abi; +use std::cell::Cell; use std::collections::hash_map::Entry; pub(crate) fn target_from_impl_item<'tcx>( @@ -62,8 +65,29 @@ enum ItemLike<'tcx> { ForeignItem, } +#[derive(Copy, Clone)] +pub(crate) enum ProcMacroKind { + FunctionLike, + Derive, + Attribute, +} + +impl IntoDiagnosticArg for ProcMacroKind { + fn into_diagnostic_arg(self) -> rustc_errors::DiagnosticArgValue<'static> { + match self { + ProcMacroKind::Attribute => "attribute proc macro", + ProcMacroKind::Derive => "derive proc macro", + ProcMacroKind::FunctionLike => "function-like proc macro", + } + .into_diagnostic_arg() + } +} + struct CheckAttrVisitor<'tcx> { tcx: TyCtxt<'tcx>, + + // Whether or not this visitor should abort after finding errors + abort: Cell<bool>, } impl CheckAttrVisitor<'_> { @@ -173,7 +197,7 @@ impl CheckAttrVisitor<'_> { sym::path => self.check_generic_attr(hir_id, attr, target, Target::Mod), sym::plugin_registrar => self.check_plugin_registrar(hir_id, attr, target), sym::macro_export => self.check_macro_export(hir_id, attr, target), - sym::ignore | sym::should_panic | sym::proc_macro_derive => { + sym::ignore | sym::should_panic => { self.check_generic_attr(hir_id, attr, target, Target::Fn) } sym::automatically_derived => { @@ -183,6 +207,16 @@ impl CheckAttrVisitor<'_> { self.check_generic_attr(hir_id, attr, target, Target::Mod) } sym::rustc_object_lifetime_default => self.check_object_lifetime_default(hir_id), + sym::proc_macro => { + self.check_proc_macro(hir_id, target, ProcMacroKind::FunctionLike) + } + sym::proc_macro_attribute => { + self.check_proc_macro(hir_id, target, ProcMacroKind::Attribute); + } + sym::proc_macro_derive => { + self.check_generic_attr(hir_id, attr, target, Target::Fn); + self.check_proc_macro(hir_id, target, ProcMacroKind::Derive) + } _ => {} } @@ -2063,6 +2097,103 @@ impl CheckAttrVisitor<'_> { errors::Unused { attr_span: attr.span, note }, ); } + + /// A best effort attempt to create an error for a mismatching proc macro signature. + /// + /// If this best effort goes wrong, it will just emit a worse error later (see #102923) + fn check_proc_macro(&self, hir_id: HirId, target: Target, kind: ProcMacroKind) { + let expected_input_count = match kind { + ProcMacroKind::Attribute => 2, + ProcMacroKind::Derive | ProcMacroKind::FunctionLike => 1, + }; + + let expected_signature = match kind { + ProcMacroKind::Attribute => "fn(TokenStream, TokenStream) -> TokenStream", + ProcMacroKind::Derive | ProcMacroKind::FunctionLike => "fn(TokenStream) -> TokenStream", + }; + + let tcx = self.tcx; + if target == Target::Fn { + let Some(tokenstream) = tcx.get_diagnostic_item(sym::TokenStream) else {return}; + let tokenstream = tcx.type_of(tokenstream); + + let id = hir_id.expect_owner(); + let hir_sig = tcx.hir().fn_sig_by_hir_id(hir_id).unwrap(); + + let sig = tcx.liberate_late_bound_regions(id.to_def_id(), tcx.fn_sig(id)); + let sig = tcx.normalize_erasing_regions(ParamEnv::empty(), sig); + + // We don't currently require that the function signature is equal to + // `fn(TokenStream) -> TokenStream`, but instead monomorphizes to + // `fn(TokenStream) -> TokenStream` after some substitution of generic arguments. + // + // Properly checking this means pulling in additional `rustc` crates, so we don't. + let drcx = DeepRejectCtxt { treat_obligation_params: TreatParams::AsInfer }; + + if sig.abi != Abi::Rust { + tcx.sess.emit_err(ProcMacroInvalidAbi { span: hir_sig.span, abi: sig.abi.name() }); + self.abort.set(true); + } + + if sig.unsafety == Unsafety::Unsafe { + tcx.sess.emit_err(ProcMacroUnsafe { span: hir_sig.span }); + self.abort.set(true); + } + + let output = sig.output(); + + // Typecheck the output + if !drcx.types_may_unify(output, tokenstream) { + tcx.sess.emit_err(ProcMacroTypeError { + span: hir_sig.decl.output.span(), + found: output, + kind, + expected_signature, + }); + self.abort.set(true); + } + + if sig.inputs().len() < expected_input_count { + tcx.sess.emit_err(ProcMacroMissingArguments { + expected_input_count, + span: hir_sig.span, + kind, + expected_signature, + }); + self.abort.set(true); + } + + // Check that the inputs are correct, if there are enough. + if sig.inputs().len() >= expected_input_count { + for (arg, input) in + sig.inputs().iter().zip(hir_sig.decl.inputs).take(expected_input_count) + { + if !drcx.types_may_unify(*arg, tokenstream) { + tcx.sess.emit_err(ProcMacroTypeError { + span: input.span, + found: *arg, + kind, + expected_signature, + }); + self.abort.set(true); + } + } + } + + // Check that there are not too many arguments + let body_id = tcx.hir().body_owned_by(id.def_id); + let excess = tcx.hir().body(body_id).params.get(expected_input_count..); + if let Some(excess @ [begin @ end] | excess @ [begin, .., end]) = excess { + tcx.sess.emit_err(ProcMacroDiffArguments { + span: begin.span.to(end.span), + count: excess.len(), + kind, + expected_signature, + }); + self.abort.set(true); + } + } + } } impl<'tcx> Visitor<'tcx> for CheckAttrVisitor<'tcx> { @@ -2225,12 +2356,15 @@ fn check_non_exported_macro_for_invalid_attrs(tcx: TyCtxt<'_>, item: &Item<'_>) } fn check_mod_attrs(tcx: TyCtxt<'_>, module_def_id: LocalDefId) { - let check_attr_visitor = &mut CheckAttrVisitor { tcx }; + let check_attr_visitor = &mut CheckAttrVisitor { tcx, abort: Cell::new(false) }; tcx.hir().visit_item_likes_in_module(module_def_id, check_attr_visitor); if module_def_id.is_top_level_module() { check_attr_visitor.check_attributes(CRATE_HIR_ID, DUMMY_SP, Target::Mod, None); check_invalid_crate_level_attr(tcx, tcx.hir().krate_attrs()); } + if check_attr_visitor.abort.get() { + tcx.sess.abort_if_errors() + } } pub(crate) fn provide(providers: &mut Providers) { diff --git a/compiler/rustc_passes/src/errors.rs b/compiler/rustc_passes/src/errors.rs index 9c6519ea4bb..9e05ad22e62 100644 --- a/compiler/rustc_passes/src/errors.rs +++ b/compiler/rustc_passes/src/errors.rs @@ -12,6 +12,7 @@ use rustc_macros::{Diagnostic, LintDiagnostic, Subdiagnostic}; use rustc_middle::ty::{MainDefinition, Ty}; use rustc_span::{Span, Symbol, DUMMY_SP}; +use crate::check_attr::ProcMacroKind; use crate::lang_items::Duplicate; #[derive(Diagnostic)] @@ -1515,3 +1516,52 @@ pub struct ChangeFieldsToBeOfUnitType { #[suggestion_part(code = "()")] pub spans: Vec<Span>, } + +#[derive(Diagnostic)] +#[diag(passes_proc_macro_typeerror)] +#[note] +pub(crate) struct ProcMacroTypeError<'tcx> { + #[primary_span] + #[label] + pub span: Span, + pub found: Ty<'tcx>, + pub kind: ProcMacroKind, + pub expected_signature: &'static str, +} + +#[derive(Diagnostic)] +#[diag(passes_proc_macro_diff_arg_count)] +pub(crate) struct ProcMacroDiffArguments { + #[primary_span] + #[label] + pub span: Span, + pub count: usize, + pub kind: ProcMacroKind, + pub expected_signature: &'static str, +} + +#[derive(Diagnostic)] +#[diag(passes_proc_macro_missing_args)] +pub(crate) struct ProcMacroMissingArguments { + #[primary_span] + #[label] + pub span: Span, + pub expected_input_count: usize, + pub kind: ProcMacroKind, + pub expected_signature: &'static str, +} + +#[derive(Diagnostic)] +#[diag(passes_proc_macro_invalid_abi)] +pub(crate) struct ProcMacroInvalidAbi { + #[primary_span] + pub span: Span, + pub abi: &'static str, +} + +#[derive(Diagnostic)] +#[diag(passes_proc_macro_unsafe)] +pub(crate) struct ProcMacroUnsafe { + #[primary_span] + pub span: Span, +} diff --git a/compiler/rustc_resolve/src/check_unused.rs b/compiler/rustc_resolve/src/check_unused.rs index 32fb5e18276..eae4c9992eb 100644 --- a/compiler/rustc_resolve/src/check_unused.rs +++ b/compiler/rustc_resolve/src/check_unused.rs @@ -28,9 +28,9 @@ use crate::module_to_string; use crate::Resolver; use rustc_ast as ast; -use rustc_ast::node_id::NodeMap; use rustc_ast::visit::{self, Visitor}; -use rustc_data_structures::fx::FxHashSet; +use rustc_data_structures::fx::FxIndexMap; +use rustc_data_structures::unord::UnordSet; use rustc_errors::{pluralize, MultiSpan}; use rustc_session::lint::builtin::{MACRO_USE_EXTERN_CRATE, UNUSED_IMPORTS}; use rustc_session::lint::BuiltinLintDiagnostics; @@ -40,7 +40,7 @@ struct UnusedImport<'a> { use_tree: &'a ast::UseTree, use_tree_id: ast::NodeId, item_span: Span, - unused: FxHashSet<ast::NodeId>, + unused: UnordSet<ast::NodeId>, } impl<'a> UnusedImport<'a> { @@ -52,7 +52,7 @@ impl<'a> UnusedImport<'a> { struct UnusedImportCheckVisitor<'a, 'b> { r: &'a mut Resolver<'b>, /// All the (so far) unused imports, grouped path list - unused_imports: NodeMap<UnusedImport<'a>>, + unused_imports: FxIndexMap<ast::NodeId, UnusedImport<'a>>, base_use_tree: Option<&'a ast::UseTree>, base_id: ast::NodeId, item_span: Span, @@ -89,7 +89,7 @@ impl<'a, 'b> UnusedImportCheckVisitor<'a, 'b> { use_tree, use_tree_id, item_span, - unused: FxHashSet::default(), + unused: Default::default(), }) } } diff --git a/compiler/rustc_resolve/src/diagnostics.rs b/compiler/rustc_resolve/src/diagnostics.rs index f24e405018b..36608615255 100644 --- a/compiler/rustc_resolve/src/diagnostics.rs +++ b/compiler/rustc_resolve/src/diagnostics.rs @@ -1033,7 +1033,7 @@ impl<'a> Resolver<'a> { let root_module = this.resolve_crate_root(root_ident); this.add_module_candidates(root_module, &mut suggestions, filter_fn, None); } - Scope::Module(module) => { + Scope::Module(module, _) => { this.add_module_candidates(module, &mut suggestions, filter_fn, None); } Scope::MacroUsePrelude => { @@ -2125,9 +2125,15 @@ impl<'a, 'b> ImportResolver<'a, 'b> { let source_map = self.r.session.source_map(); + // Make sure this is actually crate-relative. + let is_definitely_crate = import + .module_path + .first() + .map_or(false, |f| f.ident.name != kw::SelfLower && f.ident.name != kw::Super); + // Add the import to the start, with a `{` if required. let start_point = source_map.start_point(after_crate_name); - if let Ok(start_snippet) = source_map.span_to_snippet(start_point) { + if is_definitely_crate && let Ok(start_snippet) = source_map.span_to_snippet(start_point) { corrections.push(( start_point, if has_nested { @@ -2139,11 +2145,17 @@ impl<'a, 'b> ImportResolver<'a, 'b> { format!("{{{}, {}", import_snippet, start_snippet) }, )); - } - // Add a `};` to the end if nested, matching the `{` added at the start. - if !has_nested { - corrections.push((source_map.end_point(after_crate_name), "};".to_string())); + // Add a `};` to the end if nested, matching the `{` added at the start. + if !has_nested { + corrections.push((source_map.end_point(after_crate_name), "};".to_string())); + } + } else { + // If the root import is module-relative, add the import separately + corrections.push(( + import.use_span.shrink_to_lo(), + format!("use {module_name}::{import_snippet};\n"), + )); } } diff --git a/compiler/rustc_resolve/src/ident.rs b/compiler/rustc_resolve/src/ident.rs index e41fe325b81..a84652a315d 100644 --- a/compiler/rustc_resolve/src/ident.rs +++ b/compiler/rustc_resolve/src/ident.rs @@ -1,9 +1,11 @@ -use rustc_ast as ast; +use rustc_ast::{self as ast, NodeId}; use rustc_feature::is_builtin_attr_name; use rustc_hir::def::{DefKind, Namespace, NonMacroAttrKind, PartialRes, PerNS}; use rustc_hir::PrimTy; use rustc_middle::bug; use rustc_middle::ty; +use rustc_session::lint::builtin::PROC_MACRO_DERIVE_RESOLUTION_FALLBACK; +use rustc_session::lint::BuiltinLintDiagnostics; use rustc_span::def_id::LocalDefId; use rustc_span::edition::Edition; use rustc_span::hygiene::{ExpnId, ExpnKind, LocalExpnId, MacroKind, SyntaxContext}; @@ -99,7 +101,7 @@ impl<'a> Resolver<'a> { }; let mut scope = match ns { _ if is_absolute_path => Scope::CrateRoot, - TypeNS | ValueNS => Scope::Module(module), + TypeNS | ValueNS => Scope::Module(module, None), MacroNS => Scope::DeriveHelpers(parent_scope.expansion), }; let mut ctxt = ctxt.normalize_to_macros_2_0(); @@ -163,7 +165,7 @@ impl<'a> Resolver<'a> { MacroRulesScope::Invocation(invoc_id) => { Scope::MacroRules(self.invocation_parent_scopes[&invoc_id].macro_rules) } - MacroRulesScope::Empty => Scope::Module(module), + MacroRulesScope::Empty => Scope::Module(module, None), }, Scope::CrateRoot => match ns { TypeNS => { @@ -172,10 +174,16 @@ impl<'a> Resolver<'a> { } ValueNS | MacroNS => break, }, - Scope::Module(module) => { + Scope::Module(module, prev_lint_id) => { use_prelude = !module.no_implicit_prelude; - match self.hygienic_lexical_parent(module, &mut ctxt) { - Some(parent_module) => Scope::Module(parent_module), + let derive_fallback_lint_id = match scope_set { + ScopeSet::Late(.., lint_id) => lint_id, + _ => None, + }; + match self.hygienic_lexical_parent(module, &mut ctxt, derive_fallback_lint_id) { + Some((parent_module, lint_id)) => { + Scope::Module(parent_module, lint_id.or(prev_lint_id)) + } None => { ctxt.adjust(ExpnId::root()); match ns { @@ -207,13 +215,45 @@ impl<'a> Resolver<'a> { &mut self, module: Module<'a>, ctxt: &mut SyntaxContext, - ) -> Option<Module<'a>> { + derive_fallback_lint_id: Option<NodeId>, + ) -> Option<(Module<'a>, Option<NodeId>)> { if !module.expansion.outer_expn_is_descendant_of(*ctxt) { - return Some(self.expn_def_scope(ctxt.remove_mark())); + return Some((self.expn_def_scope(ctxt.remove_mark()), None)); } if let ModuleKind::Block = module.kind { - return Some(module.parent.unwrap().nearest_item_scope()); + return Some((module.parent.unwrap().nearest_item_scope(), None)); + } + + // We need to support the next case under a deprecation warning + // ``` + // struct MyStruct; + // ---- begin: this comes from a proc macro derive + // mod implementation_details { + // // Note that `MyStruct` is not in scope here. + // impl SomeTrait for MyStruct { ... } + // } + // ---- end + // ``` + // So we have to fall back to the module's parent during lexical resolution in this case. + if derive_fallback_lint_id.is_some() { + if let Some(parent) = module.parent { + // Inner module is inside the macro, parent module is outside of the macro. + if module.expansion != parent.expansion + && module.expansion.is_descendant_of(parent.expansion) + { + // The macro is a proc macro derive + if let Some(def_id) = module.expansion.expn_data().macro_def_id { + let ext = self.get_macro_by_def_id(def_id).ext; + if ext.builtin_name.is_none() + && ext.macro_kind() == MacroKind::Derive + && parent.expansion.outer_expn_is_descendant_of(*ctxt) + { + return Some((parent, derive_fallback_lint_id)); + } + } + } + } } None @@ -470,7 +510,7 @@ impl<'a> Resolver<'a> { Err((Determinacy::Determined, _)) => Err(Determinacy::Determined), } } - Scope::Module(module) => { + Scope::Module(module, derive_fallback_lint_id) => { let adjusted_parent_scope = &ParentScope { module, ..*parent_scope }; let binding = this.resolve_ident_in_module_unadjusted_ext( ModuleOrUniformRoot::Module(module), @@ -483,6 +523,21 @@ impl<'a> Resolver<'a> { ); match binding { Ok(binding) => { + if let Some(lint_id) = derive_fallback_lint_id { + this.lint_buffer.buffer_lint_with_diagnostic( + PROC_MACRO_DERIVE_RESOLUTION_FALLBACK, + lint_id, + orig_ident.span, + &format!( + "cannot find {} `{}` in this scope", + ns.descr(), + ident + ), + BuiltinLintDiagnostics::ProcMacroDeriveResolutionFallback( + orig_ident.span, + ), + ); + } let misc_flags = if ptr::eq(module, this.graph_root) { Flags::MISC_SUGGEST_CRATE } else if module.is_normal() { diff --git a/compiler/rustc_resolve/src/late/diagnostics.rs b/compiler/rustc_resolve/src/late/diagnostics.rs index d92b046d0b9..6d448433ee6 100644 --- a/compiler/rustc_resolve/src/late/diagnostics.rs +++ b/compiler/rustc_resolve/src/late/diagnostics.rs @@ -2188,15 +2188,31 @@ impl<'a: 'ast, 'ast> LateResolutionVisitor<'a, '_, 'ast> { let deletion_span = || { if params.len() == 1 { // if sole lifetime, remove the entire `<>` brackets - generics_span + Some(generics_span) } else if param_index == 0 { // if removing within `<>` brackets, we also want to // delete a leading or trailing comma as appropriate - param.span().to(params[param_index + 1].span().shrink_to_lo()) + match ( + param.span().find_ancestor_inside(generics_span), + params[param_index + 1].span().find_ancestor_inside(generics_span), + ) { + (Some(param_span), Some(next_param_span)) => { + Some(param_span.to(next_param_span.shrink_to_lo())) + } + _ => None, + } } else { // if removing within `<>` brackets, we also want to // delete a leading or trailing comma as appropriate - params[param_index - 1].span().shrink_to_hi().to(param.span()) + match ( + param.span().find_ancestor_inside(generics_span), + params[param_index - 1].span().find_ancestor_inside(generics_span), + ) { + (Some(param_span), Some(prev_param_span)) => { + Some(prev_param_span.shrink_to_hi().to(param_span)) + } + _ => None, + } } }; match use_set { diff --git a/compiler/rustc_resolve/src/lib.rs b/compiler/rustc_resolve/src/lib.rs index f950e4a9bee..1b181b71400 100644 --- a/compiler/rustc_resolve/src/lib.rs +++ b/compiler/rustc_resolve/src/lib.rs @@ -105,7 +105,9 @@ enum Scope<'a> { DeriveHelpersCompat, MacroRules(MacroRulesScopeRef<'a>), CrateRoot, - Module(Module<'a>), + // The node ID is for reporting the `PROC_MACRO_DERIVE_RESOLUTION_FALLBACK` + // lint if it should be reported. + Module(Module<'a>, Option<NodeId>), MacroUsePrelude, BuiltinAttrs, ExternPrelude, @@ -1591,7 +1593,7 @@ impl<'a> Resolver<'a> { self.visit_scopes(ScopeSet::All(TypeNS, false), parent_scope, ctxt, |this, scope, _, _| { match scope { - Scope::Module(module) => { + Scope::Module(module, _) => { this.traits_in_module(module, assoc_item, &mut found_traits); } Scope::StdLibPrelude => { diff --git a/compiler/rustc_span/src/symbol.rs b/compiler/rustc_span/src/symbol.rs index 7597b8d126a..2bccd46b08f 100644 --- a/compiler/rustc_span/src/symbol.rs +++ b/compiler/rustc_span/src/symbol.rs @@ -288,6 +288,7 @@ symbols! { Target, ToOwned, ToString, + TokenStream, Try, TryCaptureGeneric, TryCapturePrintable, diff --git a/compiler/rustc_target/src/spec/bpf_base.rs b/compiler/rustc_target/src/spec/bpf_base.rs index 2b00cda44b5..4d03747d016 100644 --- a/compiler/rustc_target/src/spec/bpf_base.rs +++ b/compiler/rustc_target/src/spec/bpf_base.rs @@ -6,7 +6,7 @@ pub fn opts(endian: Endian) -> TargetOptions { allow_asm: true, endian, linker_flavor: LinkerFlavor::Bpf, - atomic_cas: true, + atomic_cas: false, dynamic_linking: true, no_builtins: true, panic_strategy: PanicStrategy::Abort, diff --git a/compiler/rustc_target/src/spec/s390x_unknown_linux_gnu.rs b/compiler/rustc_target/src/spec/s390x_unknown_linux_gnu.rs index cda88de0ea4..f2c722b9a89 100644 --- a/compiler/rustc_target/src/spec/s390x_unknown_linux_gnu.rs +++ b/compiler/rustc_target/src/spec/s390x_unknown_linux_gnu.rs @@ -1,5 +1,5 @@ use crate::abi::Endian; -use crate::spec::{StackProbeType, Target}; +use crate::spec::{SanitizerSet, StackProbeType, Target}; pub fn target() -> Target { let mut base = super::linux_gnu_base::opts(); @@ -13,6 +13,8 @@ pub fn target() -> Target { base.max_atomic_width = Some(64); base.min_global_align = Some(16); base.stack_probes = StackProbeType::Inline; + base.supported_sanitizers = + SanitizerSet::ADDRESS | SanitizerSet::LEAK | SanitizerSet::MEMORY | SanitizerSet::THREAD; Target { llvm_target: "s390x-unknown-linux-gnu".into(), diff --git a/compiler/rustc_target/src/spec/s390x_unknown_linux_musl.rs b/compiler/rustc_target/src/spec/s390x_unknown_linux_musl.rs index 91e63aee5e4..8fe9d023c52 100644 --- a/compiler/rustc_target/src/spec/s390x_unknown_linux_musl.rs +++ b/compiler/rustc_target/src/spec/s390x_unknown_linux_musl.rs @@ -1,5 +1,5 @@ use crate::abi::Endian; -use crate::spec::{StackProbeType, Target}; +use crate::spec::{SanitizerSet, StackProbeType, Target}; pub fn target() -> Target { let mut base = super::linux_musl_base::opts(); @@ -14,6 +14,8 @@ pub fn target() -> Target { base.min_global_align = Some(16); base.static_position_independent_executables = true; base.stack_probes = StackProbeType::Inline; + base.supported_sanitizers = + SanitizerSet::ADDRESS | SanitizerSet::LEAK | SanitizerSet::MEMORY | SanitizerSet::THREAD; Target { llvm_target: "s390x-unknown-linux-musl".into(), diff --git a/compiler/rustc_trait_selection/src/solve/assembly.rs b/compiler/rustc_trait_selection/src/solve/assembly.rs index 2336fb53aec..0b642fcba28 100644 --- a/compiler/rustc_trait_selection/src/solve/assembly.rs +++ b/compiler/rustc_trait_selection/src/solve/assembly.rs @@ -1,7 +1,7 @@ //! Code shared by trait and projection goals for candidate assembly. use super::infcx_ext::InferCtxtExt; -use super::{CanonicalResponse, EvalCtxt, Goal, QueryResult}; +use super::{CanonicalResponse, Certainty, EvalCtxt, Goal, QueryResult}; use rustc_hir::def_id::DefId; use rustc_infer::traits::query::NoSolution; use rustc_infer::traits::util::elaborate_predicates; @@ -79,7 +79,7 @@ pub(super) enum CandidateSource { AliasBound(usize), } -pub(super) trait GoalKind<'tcx>: TypeFoldable<'tcx> + Copy { +pub(super) trait GoalKind<'tcx>: TypeFoldable<'tcx> + Copy + Eq { fn self_ty(self) -> Ty<'tcx>; fn with_self_ty(self, tcx: TyCtxt<'tcx>, self_ty: Ty<'tcx>) -> Self; @@ -117,6 +117,27 @@ pub(super) trait GoalKind<'tcx>: TypeFoldable<'tcx> + Copy { ecx: &mut EvalCtxt<'_, 'tcx>, goal: Goal<'tcx, Self>, ) -> QueryResult<'tcx>; + + fn consider_builtin_pointer_sized_candidate( + ecx: &mut EvalCtxt<'_, 'tcx>, + goal: Goal<'tcx, Self>, + ) -> QueryResult<'tcx>; + + fn consider_builtin_fn_trait_candidates( + ecx: &mut EvalCtxt<'_, 'tcx>, + goal: Goal<'tcx, Self>, + kind: ty::ClosureKind, + ) -> QueryResult<'tcx>; + + fn consider_builtin_tuple_candidate( + ecx: &mut EvalCtxt<'_, 'tcx>, + goal: Goal<'tcx, Self>, + ) -> QueryResult<'tcx>; + + fn consider_builtin_pointee_candidate( + ecx: &mut EvalCtxt<'_, 'tcx>, + goal: Goal<'tcx, Self>, + ) -> QueryResult<'tcx>; } impl<'tcx> EvalCtxt<'_, 'tcx> { @@ -124,6 +145,18 @@ impl<'tcx> EvalCtxt<'_, 'tcx> { &mut self, goal: Goal<'tcx, G>, ) -> Vec<Candidate<'tcx>> { + debug_assert_eq!(goal, self.infcx.resolve_vars_if_possible(goal)); + + // HACK: `_: Trait` is ambiguous, because it may be satisfied via a builtin rule, + // object bound, alias bound, etc. We are unable to determine this until we can at + // least structually resolve the type one layer. + if goal.predicate.self_ty().is_ty_var() { + return vec![Candidate { + source: CandidateSource::BuiltinImpl, + result: self.make_canonical_response(Certainty::AMBIGUOUS).unwrap(), + }]; + } + let mut candidates = Vec::new(); self.assemble_candidates_after_normalizing_self_ty(goal, &mut candidates); @@ -169,6 +202,7 @@ impl<'tcx> EvalCtxt<'_, 'tcx> { Ok((_, certainty)) => certainty, Err(NoSolution) => return, }; + let normalized_ty = self.infcx.resolve_vars_if_possible(normalized_ty); // NOTE: Alternatively we could call `evaluate_goal` here and only have a `Normalized` candidate. // This doesn't work as long as we use `CandidateSource` in winnowing. @@ -224,6 +258,14 @@ impl<'tcx> EvalCtxt<'_, 'tcx> { || lang_items.clone_trait() == Some(trait_def_id) { G::consider_builtin_copy_clone_candidate(self, goal) + } else if lang_items.pointer_sized() == Some(trait_def_id) { + G::consider_builtin_pointer_sized_candidate(self, goal) + } else if let Some(kind) = self.tcx().fn_trait_kind_from_def_id(trait_def_id) { + G::consider_builtin_fn_trait_candidates(self, goal, kind) + } else if lang_items.tuple_trait() == Some(trait_def_id) { + G::consider_builtin_tuple_candidate(self, goal) + } else if lang_items.pointee_trait() == Some(trait_def_id) { + G::consider_builtin_pointee_candidate(self, goal) } else { Err(NoSolution) }; diff --git a/compiler/rustc_trait_selection/src/solve/fulfill.rs b/compiler/rustc_trait_selection/src/solve/fulfill.rs index b086c0684d2..d59fa71406c 100644 --- a/compiler/rustc_trait_selection/src/solve/fulfill.rs +++ b/compiler/rustc_trait_selection/src/solve/fulfill.rs @@ -1,6 +1,6 @@ use std::mem; -use rustc_data_structures::fx::FxHashMap; +use super::{Certainty, InferCtxtEvalExt}; use rustc_infer::{ infer::InferCtxt, traits::{ @@ -8,9 +8,6 @@ use rustc_infer::{ SelectionError, TraitEngine, }, }; -use rustc_middle::ty; - -use super::{search_graph, Certainty, EvalCtxt}; /// A trait engine using the new trait solver. /// @@ -52,7 +49,7 @@ impl<'tcx> TraitEngine<'tcx> for FulfillmentCtxt<'tcx> { .drain(..) .map(|obligation| FulfillmentError { obligation: obligation.clone(), - code: FulfillmentErrorCode::CodeSelectionError(SelectionError::Unimplemented), + code: FulfillmentErrorCode::CodeAmbiguity, root_obligation: obligation, }) .collect() @@ -68,14 +65,14 @@ impl<'tcx> TraitEngine<'tcx> for FulfillmentCtxt<'tcx> { let mut has_changed = false; for obligation in mem::take(&mut self.obligations) { let goal = obligation.clone().into(); - let search_graph = &mut search_graph::SearchGraph::new(infcx.tcx); - let mut ecx = EvalCtxt::new_outside_solver(infcx, search_graph); - let (changed, certainty) = match ecx.evaluate_goal(goal) { + let (changed, certainty) = match infcx.evaluate_root_goal(goal) { Ok(result) => result, Err(NoSolution) => { errors.push(FulfillmentError { obligation: obligation.clone(), - code: FulfillmentErrorCode::CodeAmbiguity, + code: FulfillmentErrorCode::CodeSelectionError( + SelectionError::Unimplemented, + ), root_obligation: obligation, }); continue; @@ -100,8 +97,4 @@ impl<'tcx> TraitEngine<'tcx> for FulfillmentCtxt<'tcx> { fn pending_obligations(&self) -> Vec<PredicateObligation<'tcx>> { self.obligations.clone() } - - fn relationships(&mut self) -> &mut FxHashMap<ty::TyVid, ty::FoundRelationships> { - unimplemented!("Should be moved out of `TraitEngine`") - } } diff --git a/compiler/rustc_trait_selection/src/solve/mod.rs b/compiler/rustc_trait_selection/src/solve/mod.rs index 32eb84635b5..70f09401445 100644 --- a/compiler/rustc_trait_selection/src/solve/mod.rs +++ b/compiler/rustc_trait_selection/src/solve/mod.rs @@ -19,6 +19,7 @@ use std::mem; +use rustc_hir::def_id::DefId; use rustc_infer::infer::canonical::{Canonical, CanonicalVarKind, CanonicalVarValues}; use rustc_infer::infer::canonical::{OriginalQueryValues, QueryRegionConstraints, QueryResponse}; use rustc_infer::infer::{InferCtxt, InferOk, TyCtxtInferExt}; @@ -26,7 +27,9 @@ use rustc_infer::traits::query::NoSolution; use rustc_infer::traits::Obligation; use rustc_middle::infer::canonical::Certainty as OldCertainty; use rustc_middle::ty::{self, Ty, TyCtxt}; -use rustc_middle::ty::{RegionOutlivesPredicate, ToPredicate, TypeOutlivesPredicate}; +use rustc_middle::ty::{ + CoercePredicate, RegionOutlivesPredicate, SubtypePredicate, ToPredicate, TypeOutlivesPredicate, +}; use rustc_span::DUMMY_SP; use crate::traits::ObligationCause; @@ -87,6 +90,8 @@ pub enum Certainty { } impl Certainty { + pub const AMBIGUOUS: Certainty = Certainty::Maybe(MaybeCause::Ambiguity); + /// When proving multiple goals using **AND**, e.g. nested obligations for an impl, /// use this function to unify the certainty of these goals pub fn unify_and(self, other: Certainty) -> Certainty { @@ -147,6 +152,36 @@ impl<'tcx> TyCtxtExt<'tcx> for TyCtxt<'tcx> { } } +pub trait InferCtxtEvalExt<'tcx> { + /// Evaluates a goal from **outside** of the trait solver. + /// + /// Using this while inside of the solver is wrong as it uses a new + /// search graph which would break cycle detection. + fn evaluate_root_goal( + &self, + goal: Goal<'tcx, ty::Predicate<'tcx>>, + ) -> Result<(bool, Certainty), NoSolution>; +} + +impl<'tcx> InferCtxtEvalExt<'tcx> for InferCtxt<'tcx> { + fn evaluate_root_goal( + &self, + goal: Goal<'tcx, ty::Predicate<'tcx>>, + ) -> Result<(bool, Certainty), NoSolution> { + let mut search_graph = search_graph::SearchGraph::new(self.tcx); + + let result = EvalCtxt { + search_graph: &mut search_graph, + infcx: self, + var_values: CanonicalVarValues::dummy(), + } + .evaluate_goal(goal); + + assert!(search_graph.is_empty()); + result + } +} + struct EvalCtxt<'a, 'tcx> { infcx: &'a InferCtxt<'tcx>, var_values: CanonicalVarValues<'tcx>, @@ -159,18 +194,6 @@ impl<'a, 'tcx> EvalCtxt<'a, 'tcx> { self.infcx.tcx } - /// Creates a new evaluation context outside of the trait solver. - /// - /// With this solver making a canonical response doesn't make much sense. - /// The `search_graph` for this solver has to be completely empty. - fn new_outside_solver( - infcx: &'a InferCtxt<'tcx>, - search_graph: &'a mut search_graph::SearchGraph<'tcx>, - ) -> EvalCtxt<'a, 'tcx> { - assert!(search_graph.is_empty()); - EvalCtxt { infcx, var_values: CanonicalVarValues::dummy(), search_graph } - } - #[instrument(level = "debug", skip(tcx, search_graph), ret)] fn evaluate_canonical_goal( tcx: TyCtxt<'tcx>, @@ -243,16 +266,28 @@ impl<'a, 'tcx> EvalCtxt<'a, 'tcx> { ty::PredicateKind::Clause(ty::Clause::RegionOutlives(predicate)) => { self.compute_region_outlives_goal(Goal { param_env, predicate }) } + ty::PredicateKind::Subtype(predicate) => { + self.compute_subtype_goal(Goal { param_env, predicate }) + } + ty::PredicateKind::Coerce(predicate) => { + self.compute_coerce_goal(Goal { param_env, predicate }) + } + ty::PredicateKind::ClosureKind(def_id, substs, kind) => self + .compute_closure_kind_goal(Goal { + param_env, + predicate: (def_id, substs, kind), + }), + ty::PredicateKind::Ambiguous => self.make_canonical_response(Certainty::AMBIGUOUS), // FIXME: implement these predicates :) ty::PredicateKind::WellFormed(_) | ty::PredicateKind::ObjectSafe(_) - | ty::PredicateKind::ClosureKind(_, _, _) - | ty::PredicateKind::Subtype(_) - | ty::PredicateKind::Coerce(_) | ty::PredicateKind::ConstEvaluatable(_) - | ty::PredicateKind::ConstEquate(_, _) - | ty::PredicateKind::TypeWellFormedFromEnv(_) - | ty::PredicateKind::Ambiguous => self.make_canonical_response(Certainty::Yes), + | ty::PredicateKind::ConstEquate(_, _) => { + self.make_canonical_response(Certainty::Yes) + } + ty::PredicateKind::TypeWellFormedFromEnv(..) => { + bug!("TypeWellFormedFromEnv is only used for Chalk") + } } } else { let kind = self.infcx.replace_bound_vars_with_placeholders(kind); @@ -275,6 +310,58 @@ impl<'a, 'tcx> EvalCtxt<'a, 'tcx> { ) -> QueryResult<'tcx> { self.make_canonical_response(Certainty::Yes) } + + fn compute_coerce_goal( + &mut self, + goal: Goal<'tcx, CoercePredicate<'tcx>>, + ) -> QueryResult<'tcx> { + self.compute_subtype_goal(Goal { + param_env: goal.param_env, + predicate: SubtypePredicate { + a_is_expected: false, + a: goal.predicate.a, + b: goal.predicate.b, + }, + }) + } + + fn compute_subtype_goal( + &mut self, + goal: Goal<'tcx, SubtypePredicate<'tcx>>, + ) -> QueryResult<'tcx> { + if goal.predicate.a.is_ty_var() && goal.predicate.b.is_ty_var() { + // FIXME: Do we want to register a subtype relation between these vars? + // That won't actually reflect in the query response, so it seems moot. + self.make_canonical_response(Certainty::AMBIGUOUS) + } else { + self.infcx.probe(|_| { + let InferOk { value: (), obligations } = self + .infcx + .at(&ObligationCause::dummy(), goal.param_env) + .sub(goal.predicate.a, goal.predicate.b)?; + self.evaluate_all_and_make_canonical_response( + obligations.into_iter().map(|pred| pred.into()).collect(), + ) + }) + } + } + + fn compute_closure_kind_goal( + &mut self, + goal: Goal<'tcx, (DefId, ty::SubstsRef<'tcx>, ty::ClosureKind)>, + ) -> QueryResult<'tcx> { + let (_, substs, expected_kind) = goal.predicate; + let found_kind = substs.as_closure().kind_ty().to_opt_closure_kind(); + + let Some(found_kind) = found_kind else { + return self.make_canonical_response(Certainty::AMBIGUOUS); + }; + if found_kind.extends(expected_kind) { + self.make_canonical_response(Certainty::Yes) + } else { + Err(NoSolution) + } + } } impl<'tcx> EvalCtxt<'_, 'tcx> { diff --git a/compiler/rustc_trait_selection/src/solve/project_goals.rs b/compiler/rustc_trait_selection/src/solve/project_goals.rs index ffc1c70e0cb..e5072d8e2d1 100644 --- a/compiler/rustc_trait_selection/src/solve/project_goals.rs +++ b/compiler/rustc_trait_selection/src/solve/project_goals.rs @@ -2,18 +2,20 @@ use crate::traits::{specialization_graph, translate_substs}; use super::assembly::{self, Candidate, CandidateSource}; use super::infcx_ext::InferCtxtExt; -use super::{Certainty, EvalCtxt, Goal, MaybeCause, QueryResult}; +use super::trait_goals::structural_traits; +use super::{Certainty, EvalCtxt, Goal, QueryResult}; use rustc_errors::ErrorGuaranteed; use rustc_hir::def::DefKind; use rustc_hir::def_id::DefId; +use rustc_hir::LangItem; use rustc_infer::infer::InferCtxt; use rustc_infer::traits::query::NoSolution; use rustc_infer::traits::specialization_graph::LeafDef; use rustc_infer::traits::Reveal; use rustc_middle::ty::fast_reject::{DeepRejectCtxt, TreatParams}; -use rustc_middle::ty::TypeVisitable; use rustc_middle::ty::{self, Ty, TyCtxt}; use rustc_middle::ty::{ProjectionPredicate, TypeSuperVisitable, TypeVisitor}; +use rustc_middle::ty::{ToPredicate, TypeVisitable}; use rustc_span::DUMMY_SP; use std::iter; use std::ops::ControlFlow; @@ -228,8 +230,7 @@ impl<'tcx> assembly::GoalKind<'tcx> for ProjectionPredicate<'tcx> { goal.predicate.def_id(), impl_def_id )? else { - let certainty = Certainty::Maybe(MaybeCause::Ambiguity); - return ecx.make_canonical_response(trait_ref_certainty.unify_and(certainty)); + return ecx.make_canonical_response(trait_ref_certainty.unify_and(Certainty::AMBIGUOUS)); }; if !assoc_def.item.defaultness(tcx).has_value() { @@ -351,6 +352,136 @@ impl<'tcx> assembly::GoalKind<'tcx> for ProjectionPredicate<'tcx> { ) -> QueryResult<'tcx> { bug!("`Copy`/`Clone` does not have an associated type: {:?}", goal); } + + fn consider_builtin_pointer_sized_candidate( + _ecx: &mut EvalCtxt<'_, 'tcx>, + goal: Goal<'tcx, Self>, + ) -> QueryResult<'tcx> { + bug!("`PointerSized` does not have an associated type: {:?}", goal); + } + + fn consider_builtin_fn_trait_candidates( + ecx: &mut EvalCtxt<'_, 'tcx>, + goal: Goal<'tcx, Self>, + goal_kind: ty::ClosureKind, + ) -> QueryResult<'tcx> { + if let Some(tupled_inputs_and_output) = + structural_traits::extract_tupled_inputs_and_output_from_callable( + ecx.tcx(), + goal.predicate.self_ty(), + goal_kind, + )? + { + let pred = tupled_inputs_and_output + .map_bound(|(inputs, output)| ty::ProjectionPredicate { + projection_ty: ecx + .tcx() + .mk_alias_ty(goal.predicate.def_id(), [goal.predicate.self_ty(), inputs]), + term: output.into(), + }) + .to_predicate(ecx.tcx()); + Self::consider_assumption(ecx, goal, pred) + } else { + ecx.make_canonical_response(Certainty::AMBIGUOUS) + } + } + + fn consider_builtin_tuple_candidate( + _ecx: &mut EvalCtxt<'_, 'tcx>, + goal: Goal<'tcx, Self>, + ) -> QueryResult<'tcx> { + bug!("`Tuple` does not have an associated type: {:?}", goal); + } + + fn consider_builtin_pointee_candidate( + ecx: &mut EvalCtxt<'_, 'tcx>, + goal: Goal<'tcx, Self>, + ) -> QueryResult<'tcx> { + let tcx = ecx.tcx(); + ecx.infcx.probe(|_| { + let metadata_ty = match goal.predicate.self_ty().kind() { + ty::Bool + | ty::Char + | ty::Int(..) + | ty::Uint(..) + | ty::Float(..) + | ty::Array(..) + | ty::RawPtr(..) + | ty::Ref(..) + | ty::FnDef(..) + | ty::FnPtr(..) + | ty::Closure(..) + | ty::Infer(ty::IntVar(..) | ty::FloatVar(..)) + | ty::Generator(..) + | ty::GeneratorWitness(..) + | ty::Never + | ty::Foreign(..) => tcx.types.unit, + + ty::Error(e) => tcx.ty_error_with_guaranteed(*e), + + ty::Str | ty::Slice(_) => tcx.types.usize, + + ty::Dynamic(_, _, _) => { + let dyn_metadata = tcx.require_lang_item(LangItem::DynMetadata, None); + tcx.bound_type_of(dyn_metadata) + .subst(tcx, &[ty::GenericArg::from(goal.predicate.self_ty())]) + } + + ty::Infer(ty::TyVar(..)) | ty::Alias(_, _) | ty::Param(_) | ty::Placeholder(..) => { + // FIXME(ptr_metadata): It would also be possible to return a `Ok(Ambig)` with no constraints. + let sized_predicate = ty::Binder::dummy(tcx.at(DUMMY_SP).mk_trait_ref( + LangItem::Sized, + [ty::GenericArg::from(goal.predicate.self_ty())], + )); + + let mut nested_goals = ecx.infcx.eq( + goal.param_env, + goal.predicate.term.ty().unwrap(), + tcx.types.unit, + )?; + nested_goals.push(goal.with(tcx, sized_predicate)); + + return ecx.evaluate_all_and_make_canonical_response(nested_goals); + } + + ty::Adt(def, substs) if def.is_struct() => { + match def.non_enum_variant().fields.last() { + None => tcx.types.unit, + Some(field_def) => { + let self_ty = field_def.ty(tcx, substs); + let new_goal = goal.with( + tcx, + ty::Binder::dummy(goal.predicate.with_self_ty(tcx, self_ty)), + ); + return ecx.evaluate_all_and_make_canonical_response(vec![new_goal]); + } + } + } + ty::Adt(_, _) => tcx.types.unit, + + ty::Tuple(elements) => match elements.last() { + None => tcx.types.unit, + Some(&self_ty) => { + let new_goal = goal.with( + tcx, + ty::Binder::dummy(goal.predicate.with_self_ty(tcx, self_ty)), + ); + return ecx.evaluate_all_and_make_canonical_response(vec![new_goal]); + } + }, + + ty::Infer(ty::FreshTy(..) | ty::FreshIntTy(..) | ty::FreshFloatTy(..)) + | ty::Bound(..) => bug!( + "unexpected self ty `{:?}` when normalizing `<T as Pointee>::Metadata`", + goal.predicate.self_ty() + ), + }; + + let nested_goals = + ecx.infcx.eq(goal.param_env, goal.predicate.term.ty().unwrap(), metadata_ty)?; + ecx.evaluate_all_and_make_canonical_response(nested_goals) + }) + } } /// This behavior is also implemented in `rustc_ty_utils` and in the old `project` code. diff --git a/compiler/rustc_trait_selection/src/solve/trait_goals.rs b/compiler/rustc_trait_selection/src/solve/trait_goals.rs index 1ebcfd03c14..67bd2495665 100644 --- a/compiler/rustc_trait_selection/src/solve/trait_goals.rs +++ b/compiler/rustc_trait_selection/src/solve/trait_goals.rs @@ -4,16 +4,16 @@ use std::iter; use super::assembly::{self, Candidate, CandidateSource}; use super::infcx_ext::InferCtxtExt; -use super::{EvalCtxt, Goal, QueryResult}; +use super::{Certainty, EvalCtxt, Goal, QueryResult}; use rustc_hir::def_id::DefId; use rustc_infer::infer::InferCtxt; use rustc_infer::traits::query::NoSolution; use rustc_middle::ty::fast_reject::{DeepRejectCtxt, TreatParams}; -use rustc_middle::ty::TraitPredicate; -use rustc_middle::ty::{self, Ty, TyCtxt}; +use rustc_middle::ty::{self, ToPredicate, Ty, TyCtxt}; +use rustc_middle::ty::{TraitPredicate, TypeVisitable}; use rustc_span::DUMMY_SP; -mod structural_traits; +pub mod structural_traits; impl<'tcx> assembly::GoalKind<'tcx> for TraitPredicate<'tcx> { fn self_ty(self) -> Ty<'tcx> { @@ -127,6 +127,71 @@ impl<'tcx> assembly::GoalKind<'tcx> for TraitPredicate<'tcx> { structural_traits::instantiate_constituent_tys_for_copy_clone_trait, ) } + + fn consider_builtin_pointer_sized_candidate( + ecx: &mut EvalCtxt<'_, 'tcx>, + goal: Goal<'tcx, Self>, + ) -> QueryResult<'tcx> { + if goal.predicate.self_ty().has_non_region_infer() { + return ecx.make_canonical_response(Certainty::AMBIGUOUS); + } + + let tcx = ecx.tcx(); + let self_ty = tcx.erase_regions(goal.predicate.self_ty()); + + if let Ok(layout) = tcx.layout_of(goal.param_env.and(self_ty)) + && let usize_layout = tcx.layout_of(ty::ParamEnv::empty().and(tcx.types.usize)).unwrap().layout + && layout.layout.size() == usize_layout.size() + && layout.layout.align().abi == usize_layout.align().abi + { + // FIXME: We could make this faster by making a no-constraints response + ecx.make_canonical_response(Certainty::Yes) + } else { + Err(NoSolution) + } + } + + fn consider_builtin_fn_trait_candidates( + ecx: &mut EvalCtxt<'_, 'tcx>, + goal: Goal<'tcx, Self>, + goal_kind: ty::ClosureKind, + ) -> QueryResult<'tcx> { + if let Some(tupled_inputs_and_output) = + structural_traits::extract_tupled_inputs_and_output_from_callable( + ecx.tcx(), + goal.predicate.self_ty(), + goal_kind, + )? + { + let pred = tupled_inputs_and_output + .map_bound(|(inputs, _)| { + ecx.tcx() + .mk_trait_ref(goal.predicate.def_id(), [goal.predicate.self_ty(), inputs]) + }) + .to_predicate(ecx.tcx()); + Self::consider_assumption(ecx, goal, pred) + } else { + ecx.make_canonical_response(Certainty::AMBIGUOUS) + } + } + + fn consider_builtin_tuple_candidate( + ecx: &mut EvalCtxt<'_, 'tcx>, + goal: Goal<'tcx, Self>, + ) -> QueryResult<'tcx> { + if let ty::Tuple(..) = goal.predicate.self_ty().kind() { + ecx.make_canonical_response(Certainty::Yes) + } else { + Err(NoSolution) + } + } + + fn consider_builtin_pointee_candidate( + ecx: &mut EvalCtxt<'_, 'tcx>, + _goal: Goal<'tcx, Self>, + ) -> QueryResult<'tcx> { + ecx.make_canonical_response(Certainty::Yes) + } } impl<'tcx> EvalCtxt<'_, 'tcx> { diff --git a/compiler/rustc_trait_selection/src/solve/trait_goals/structural_traits.rs b/compiler/rustc_trait_selection/src/solve/trait_goals/structural_traits.rs index bbc0c772532..a11cd13cb08 100644 --- a/compiler/rustc_trait_selection/src/solve/trait_goals/structural_traits.rs +++ b/compiler/rustc_trait_selection/src/solve/trait_goals/structural_traits.rs @@ -1,6 +1,6 @@ use rustc_hir::{Movability, Mutability}; use rustc_infer::{infer::InferCtxt, traits::query::NoSolution}; -use rustc_middle::ty::{self, Ty}; +use rustc_middle::ty::{self, Ty, TyCtxt}; // Calculates the constituent types of a type for `auto trait` purposes. // @@ -30,10 +30,7 @@ pub(super) fn instantiate_constituent_tys_for_auto_trait<'tcx>( | ty::Foreign(..) | ty::Alias(ty::Projection, ..) | ty::Bound(..) - | ty::Infer(ty::TyVar(_)) => { - // FIXME: Do we need to mark anything as ambiguous here? Yeah? - Err(NoSolution) - } + | ty::Infer(ty::TyVar(_)) => Err(NoSolution), ty::Infer(ty::FreshTy(_) | ty::FreshIntTy(_) | ty::FreshFloatTy(_)) => bug!(), @@ -101,9 +98,8 @@ pub(super) fn instantiate_constituent_tys_for_sized_trait<'tcx>( | ty::Dynamic(..) | ty::Foreign(..) | ty::Alias(..) - | ty::Param(_) => Err(NoSolution), - - ty::Infer(ty::TyVar(_)) => bug!("FIXME: ambiguous"), + | ty::Param(_) + | ty::Infer(ty::TyVar(_)) => Err(NoSolution), ty::Placeholder(..) | ty::Bound(..) @@ -151,9 +147,8 @@ pub(super) fn instantiate_constituent_tys_for_copy_clone_trait<'tcx>( | ty::Ref(_, _, Mutability::Mut) | ty::Adt(_, _) | ty::Alias(_, _) - | ty::Param(_) => Err(NoSolution), - - ty::Infer(ty::TyVar(_)) => bug!("FIXME: ambiguous"), + | ty::Param(_) + | ty::Infer(ty::TyVar(_)) => Err(NoSolution), ty::Placeholder(..) | ty::Bound(..) @@ -177,3 +172,52 @@ pub(super) fn instantiate_constituent_tys_for_copy_clone_trait<'tcx>( } } } + +pub(crate) fn extract_tupled_inputs_and_output_from_callable<'tcx>( + tcx: TyCtxt<'tcx>, + self_ty: Ty<'tcx>, + goal_kind: ty::ClosureKind, +) -> Result<Option<ty::Binder<'tcx, (Ty<'tcx>, Ty<'tcx>)>>, NoSolution> { + match *self_ty.kind() { + ty::FnDef(def_id, substs) => Ok(Some( + tcx.bound_fn_sig(def_id) + .subst(tcx, substs) + .map_bound(|sig| (tcx.mk_tup(sig.inputs().iter()), sig.output())), + )), + ty::FnPtr(sig) => { + Ok(Some(sig.map_bound(|sig| (tcx.mk_tup(sig.inputs().iter()), sig.output())))) + } + ty::Closure(_, substs) => { + let closure_substs = substs.as_closure(); + match closure_substs.kind_ty().to_opt_closure_kind() { + Some(closure_kind) if closure_kind.extends(goal_kind) => {} + None => return Ok(None), + _ => return Err(NoSolution), + } + Ok(Some(closure_substs.sig().map_bound(|sig| (sig.inputs()[0], sig.output())))) + } + ty::Bool + | ty::Char + | ty::Int(_) + | ty::Uint(_) + | ty::Float(_) + | ty::Adt(_, _) + | ty::Foreign(_) + | ty::Str + | ty::Array(_, _) + | ty::Slice(_) + | ty::RawPtr(_) + | ty::Ref(_, _, _) + | ty::Dynamic(_, _, _) + | ty::Generator(_, _, _) + | ty::GeneratorWitness(_) + | ty::Never + | ty::Tuple(_) + | ty::Alias(_, _) + | ty::Param(_) + | ty::Placeholder(_) + | ty::Bound(_, _) + | ty::Infer(_) + | ty::Error(_) => Err(NoSolution), + } +} diff --git a/compiler/rustc_trait_selection/src/traits/chalk_fulfill.rs b/compiler/rustc_trait_selection/src/traits/chalk_fulfill.rs index e8895052353..61d09189798 100644 --- a/compiler/rustc_trait_selection/src/traits/chalk_fulfill.rs +++ b/compiler/rustc_trait_selection/src/traits/chalk_fulfill.rs @@ -7,24 +7,18 @@ use crate::traits::{ ChalkEnvironmentAndGoal, FulfillmentError, FulfillmentErrorCode, PredicateObligation, SelectionError, TraitEngine, }; -use rustc_data_structures::fx::{FxHashMap, FxIndexSet}; -use rustc_middle::ty::{self, TypeVisitable}; +use rustc_data_structures::fx::FxIndexSet; +use rustc_middle::ty::TypeVisitable; pub struct FulfillmentContext<'tcx> { obligations: FxIndexSet<PredicateObligation<'tcx>>, - relationships: FxHashMap<ty::TyVid, ty::FoundRelationships>, - usable_in_snapshot: bool, } impl FulfillmentContext<'_> { pub(super) fn new() -> Self { - FulfillmentContext { - obligations: FxIndexSet::default(), - relationships: FxHashMap::default(), - usable_in_snapshot: false, - } + FulfillmentContext { obligations: FxIndexSet::default(), usable_in_snapshot: false } } pub(crate) fn new_in_snapshot() -> Self { @@ -43,8 +37,6 @@ impl<'tcx> TraitEngine<'tcx> for FulfillmentContext<'tcx> { } let obligation = infcx.resolve_vars_if_possible(obligation); - super::relationships::update(self, infcx, &obligation); - self.obligations.insert(obligation); } @@ -154,8 +146,4 @@ impl<'tcx> TraitEngine<'tcx> for FulfillmentContext<'tcx> { fn pending_obligations(&self) -> Vec<PredicateObligation<'tcx>> { self.obligations.iter().cloned().collect() } - - fn relationships(&mut self) -> &mut FxHashMap<ty::TyVid, ty::FoundRelationships> { - &mut self.relationships - } } diff --git a/compiler/rustc_trait_selection/src/traits/coherence.rs b/compiler/rustc_trait_selection/src/traits/coherence.rs index 5f649852d0b..ecee0bf7a6d 100644 --- a/compiler/rustc_trait_selection/src/traits/coherence.rs +++ b/compiler/rustc_trait_selection/src/traits/coherence.rs @@ -17,7 +17,6 @@ use crate::traits::{ use rustc_data_structures::fx::FxIndexSet; use rustc_errors::Diagnostic; use rustc_hir::def_id::{DefId, CRATE_DEF_ID, LOCAL_CRATE}; -use rustc_hir::CRATE_HIR_ID; use rustc_infer::infer::{DefiningAnchor, InferCtxt, TyCtxtInferExt}; use rustc_infer::traits::util; use rustc_middle::traits::specialization_graph::OverlapMode; @@ -382,18 +381,14 @@ fn resolve_negative_obligation<'tcx>( return false; } - let (body_id, body_def_id) = if let Some(body_def_id) = body_def_id.as_local() { - (tcx.hir().local_def_id_to_hir_id(body_def_id), body_def_id) - } else { - (CRATE_HIR_ID, CRATE_DEF_ID) - }; + let body_def_id = body_def_id.as_local().unwrap_or(CRATE_DEF_ID); let ocx = ObligationCtxt::new(&infcx); let wf_tys = ocx.assumed_wf_types(param_env, DUMMY_SP, body_def_id); let outlives_env = OutlivesEnvironment::with_bounds( param_env, Some(&infcx), - infcx.implied_bounds_tys(param_env, body_id, wf_tys), + infcx.implied_bounds_tys(param_env, body_def_id, wf_tys), ); infcx.process_registered_region_obligations(outlives_env.region_bound_pairs(), param_env); @@ -401,12 +396,12 @@ fn resolve_negative_obligation<'tcx>( infcx.resolve_regions(&outlives_env).is_empty() } +#[instrument(level = "debug", skip(tcx), ret)] pub fn trait_ref_is_knowable<'tcx>( tcx: TyCtxt<'tcx>, trait_ref: ty::TraitRef<'tcx>, ) -> Result<(), Conflict> { - debug!("trait_ref_is_knowable(trait_ref={:?})", trait_ref); - if orphan_check_trait_ref(tcx, trait_ref, InCrate::Remote).is_ok() { + if orphan_check_trait_ref(trait_ref, InCrate::Remote).is_ok() { // A downstream or cousin crate is allowed to implement some // substitution of this trait-ref. return Err(Conflict::Downstream); @@ -429,11 +424,9 @@ pub fn trait_ref_is_knowable<'tcx>( // and if we are an intermediate owner, then we don't care // about future-compatibility, which means that we're OK if // we are an owner. - if orphan_check_trait_ref(tcx, trait_ref, InCrate::Local).is_ok() { - debug!("trait_ref_is_knowable: orphan check passed"); + if orphan_check_trait_ref(trait_ref, InCrate::Local).is_ok() { Ok(()) } else { - debug!("trait_ref_is_knowable: nonlocal, nonfundamental, unowned"); Err(Conflict::Upstream) } } @@ -445,6 +438,7 @@ pub fn trait_ref_is_local_or_fundamental<'tcx>( trait_ref.def_id.krate == LOCAL_CRATE || tcx.has_attr(trait_ref.def_id, sym::fundamental) } +#[derive(Debug)] pub enum OrphanCheckErr<'tcx> { NonLocalInputType(Vec<(Ty<'tcx>, bool /* Is this the first input type? */)>), UncoveredTy(Ty<'tcx>, Option<Ty<'tcx>>), @@ -456,13 +450,12 @@ pub enum OrphanCheckErr<'tcx> { /// /// 1. All type parameters in `Self` must be "covered" by some local type constructor. /// 2. Some local type must appear in `Self`. +#[instrument(level = "debug", skip(tcx), ret)] pub fn orphan_check(tcx: TyCtxt<'_>, impl_def_id: DefId) -> Result<(), OrphanCheckErr<'_>> { - debug!("orphan_check({:?})", impl_def_id); - // We only except this routine to be invoked on implementations // of a trait, not inherent implementations. let trait_ref = tcx.impl_trait_ref(impl_def_id).unwrap().subst_identity(); - debug!("orphan_check: trait_ref={:?}", trait_ref); + debug!(?trait_ref); // If the *trait* is local to the crate, ok. if trait_ref.def_id.is_local() { @@ -470,7 +463,7 @@ pub fn orphan_check(tcx: TyCtxt<'_>, impl_def_id: DefId) -> Result<(), OrphanChe return Ok(()); } - orphan_check_trait_ref(tcx, trait_ref, InCrate::Local) + orphan_check_trait_ref(trait_ref, InCrate::Local) } /// Checks whether a trait-ref is potentially implementable by a crate. @@ -559,13 +552,11 @@ pub fn orphan_check(tcx: TyCtxt<'_>, impl_def_id: DefId) -> Result<(), OrphanChe /// /// Note that this function is never called for types that have both type /// parameters and inference variables. +#[instrument(level = "trace", ret)] fn orphan_check_trait_ref<'tcx>( - tcx: TyCtxt<'tcx>, trait_ref: ty::TraitRef<'tcx>, in_crate: InCrate, ) -> Result<(), OrphanCheckErr<'tcx>> { - debug!("orphan_check_trait_ref(trait_ref={:?}, in_crate={:?})", trait_ref, in_crate); - if trait_ref.needs_infer() && trait_ref.needs_subst() { bug!( "can't orphan check a trait ref with both params and inference variables {:?}", @@ -573,7 +564,7 @@ fn orphan_check_trait_ref<'tcx>( ); } - let mut checker = OrphanChecker::new(tcx, in_crate); + let mut checker = OrphanChecker::new(in_crate); match trait_ref.visit_with(&mut checker) { ControlFlow::Continue(()) => Err(OrphanCheckErr::NonLocalInputType(checker.non_local_tys)), ControlFlow::Break(OrphanCheckEarlyExit::ParamTy(ty)) => { @@ -592,7 +583,6 @@ fn orphan_check_trait_ref<'tcx>( } struct OrphanChecker<'tcx> { - tcx: TyCtxt<'tcx>, in_crate: InCrate, in_self_ty: bool, /// Ignore orphan check failures and exclusively search for the first @@ -602,9 +592,8 @@ struct OrphanChecker<'tcx> { } impl<'tcx> OrphanChecker<'tcx> { - fn new(tcx: TyCtxt<'tcx>, in_crate: InCrate) -> Self { + fn new(in_crate: InCrate) -> Self { OrphanChecker { - tcx, in_crate, in_self_ty: true, search_first_local_ty: false, @@ -697,13 +686,17 @@ impl<'tcx> TypeVisitor<'tcx> for OrphanChecker<'tcx> { } } ty::Error(_) => ControlFlow::Break(OrphanCheckEarlyExit::LocalTy(ty)), - ty::Closure(..) | ty::Generator(..) | ty::GeneratorWitness(..) => { - self.tcx.sess.delay_span_bug( - DUMMY_SP, - format!("ty_is_local invoked on closure or generator: {:?}", ty), - ); - ControlFlow::Break(OrphanCheckEarlyExit::LocalTy(ty)) + ty::Closure(did, ..) | ty::Generator(did, ..) => { + if self.def_id_is_local(did) { + ControlFlow::Break(OrphanCheckEarlyExit::LocalTy(ty)) + } else { + self.found_non_local_ty(ty) + } } + // This should only be created when checking whether we have to check whether some + // auto trait impl applies. There will never be multiple impls, so we can just + // act as if it were a local type here. + ty::GeneratorWitness(_) => ControlFlow::Break(OrphanCheckEarlyExit::LocalTy(ty)), ty::Alias(ty::Opaque, ..) => { // This merits some explanation. // Normally, opaque types are not involved when performing diff --git a/compiler/rustc_trait_selection/src/traits/engine.rs b/compiler/rustc_trait_selection/src/traits/engine.rs index 369f80139a8..a2ddd91546c 100644 --- a/compiler/rustc_trait_selection/src/traits/engine.rs +++ b/compiler/rustc_trait_selection/src/traits/engine.rs @@ -190,8 +190,7 @@ impl<'a, 'tcx> ObligationCtxt<'a, 'tcx> { let tcx = self.infcx.tcx; let assumed_wf_types = tcx.assumed_wf_types(def_id); let mut implied_bounds = FxIndexSet::default(); - let hir_id = tcx.hir().local_def_id_to_hir_id(def_id); - let cause = ObligationCause::misc(span, hir_id); + let cause = ObligationCause::misc(span, def_id); for ty in assumed_wf_types { // FIXME(@lcnr): rustc currently does not check wf for types // pre-normalization, meaning that implied bounds are sometimes diff --git a/compiler/rustc_trait_selection/src/traits/error_reporting/ambiguity.rs b/compiler/rustc_trait_selection/src/traits/error_reporting/ambiguity.rs index 0419bb3f724..6bf453c3ff0 100644 --- a/compiler/rustc_trait_selection/src/traits/error_reporting/ambiguity.rs +++ b/compiler/rustc_trait_selection/src/traits/error_reporting/ambiguity.rs @@ -81,7 +81,7 @@ pub fn recompute_applicable_impls<'tcx>( ); let predicates = - tcx.predicates_of(obligation.cause.body_id.owner.to_def_id()).instantiate_identity(tcx); + tcx.predicates_of(obligation.cause.body_id.to_def_id()).instantiate_identity(tcx); for obligation in elaborate_predicates_with_span(tcx, predicates.into_iter()) { let kind = obligation.predicate.kind(); if let ty::PredicateKind::Clause(ty::Clause::Trait(trait_pred)) = kind.skip_binder() diff --git a/compiler/rustc_trait_selection/src/traits/error_reporting/mod.rs b/compiler/rustc_trait_selection/src/traits/error_reporting/mod.rs index 434f75de02b..98917430d24 100644 --- a/compiler/rustc_trait_selection/src/traits/error_reporting/mod.rs +++ b/compiler/rustc_trait_selection/src/traits/error_reporting/mod.rs @@ -839,14 +839,7 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { err.note(s.as_str()); } if let Some(ref s) = parent_label { - let body = tcx - .hir() - .opt_local_def_id(obligation.cause.body_id) - .unwrap_or_else(|| { - tcx.hir().body_owner_def_id(hir::BodyId { - hir_id: obligation.cause.body_id, - }) - }); + let body = obligation.cause.body_id; err.span_label(tcx.def_span(body), s); } @@ -934,6 +927,8 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { ); } + let body_hir_id = + self.tcx.hir().local_def_id_to_hir_id(obligation.cause.body_id); // Try to report a help message if is_fn_trait && let Ok((implemented_kind, params)) = self.type_implements_fn_trait( @@ -1014,7 +1009,7 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { if !self.report_similar_impl_candidates( impl_candidates, trait_ref, - obligation.cause.body_id, + body_hir_id, &mut err, true, ) { @@ -1050,7 +1045,7 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { self.report_similar_impl_candidates( impl_candidates, trait_ref, - obligation.cause.body_id, + body_hir_id, &mut err, true, ); @@ -1350,6 +1345,7 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { expected_trait_ref, obligation.cause.code(), found_node, + obligation.param_env, ) } else { let (closure_span, closure_arg_span, found) = found_did @@ -2304,10 +2300,12 @@ impl<'tcx> InferCtxtPrivExt<'tcx> for TypeErrCtxt<'_, 'tcx> { predicate.to_opt_poly_trait_pred().unwrap(), ); if impl_candidates.len() < 10 { + let hir = + self.tcx.hir().local_def_id_to_hir_id(obligation.cause.body_id); self.report_similar_impl_candidates( impl_candidates, trait_ref, - body_id.map(|id| id.hir_id).unwrap_or(obligation.cause.body_id), + body_id.map(|id| id.hir_id).unwrap_or(hir), &mut err, false, ); @@ -2827,7 +2825,7 @@ pub struct FindExprBySpan<'hir> { } impl<'hir> FindExprBySpan<'hir> { - fn new(span: Span) -> Self { + pub fn new(span: Span) -> Self { Self { span, result: None, ty_result: None } } } diff --git a/compiler/rustc_trait_selection/src/traits/error_reporting/on_unimplemented.rs b/compiler/rustc_trait_selection/src/traits/error_reporting/on_unimplemented.rs index 18d308f7123..a3209d35e58 100644 --- a/compiler/rustc_trait_selection/src/traits/error_reporting/on_unimplemented.rs +++ b/compiler/rustc_trait_selection/src/traits/error_reporting/on_unimplemented.rs @@ -149,10 +149,9 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { .unwrap_or_else(|| (trait_ref.def_id(), trait_ref.skip_binder().substs)); let trait_ref = trait_ref.skip_binder(); - let mut flags = vec![( - sym::ItemContext, - self.describe_enclosure(obligation.cause.body_id).map(|s| s.to_owned()), - )]; + let body_hir = self.tcx.hir().local_def_id_to_hir_id(obligation.cause.body_id); + let mut flags = + vec![(sym::ItemContext, self.describe_enclosure(body_hir).map(|s| s.to_owned()))]; match obligation.cause.code() { ObligationCauseCode::BuiltinDerivedObligation(..) diff --git a/compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs b/compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs index 195bbe92f8b..bf5e77e6ce1 100644 --- a/compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs +++ b/compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs @@ -9,7 +9,6 @@ use crate::infer::InferCtxt; use crate::traits::{NormalizeExt, ObligationCtxt}; use hir::def::CtorOf; -use hir::{Expr, HirId}; use rustc_data_structures::fx::FxHashSet; use rustc_data_structures::stack::ensure_sufficient_stack; use rustc_errors::{ @@ -22,6 +21,7 @@ use rustc_hir::def_id::DefId; use rustc_hir::intravisit::Visitor; use rustc_hir::lang_items::LangItem; use rustc_hir::{AsyncGeneratorKind, GeneratorKind, Node}; +use rustc_hir::{Expr, HirId}; use rustc_infer::infer::error_reporting::TypeErrCtxt; use rustc_infer::infer::type_variable::{TypeVariableOrigin, TypeVariableOriginKind}; use rustc_infer::infer::{InferOk, LateBoundRegionConversionTime}; @@ -34,6 +34,7 @@ use rustc_middle::ty::{ IsSuggestable, ToPredicate, Ty, TyCtxt, TypeAndMut, TypeFoldable, TypeFolder, TypeSuperFoldable, TypeVisitable, TypeckResults, }; +use rustc_span::def_id::LocalDefId; use rustc_span::symbol::{sym, Ident, Symbol}; use rustc_span::{BytePos, DesugaringKind, ExpnKind, MacroKind, Span, DUMMY_SP}; use rustc_target::spec::abi; @@ -179,7 +180,7 @@ pub trait TypeErrCtxtExt<'tcx> { err: &mut Diagnostic, trait_pred: ty::PolyTraitPredicate<'tcx>, associated_item: Option<(&'static str, Ty<'tcx>)>, - body_id: hir::HirId, + body_id: LocalDefId, ); fn suggest_dereferences( @@ -283,6 +284,7 @@ pub trait TypeErrCtxtExt<'tcx> { expected: ty::PolyTraitRef<'tcx>, cause: &ObligationCauseCode<'tcx>, found_node: Option<Node<'_>>, + param_env: ty::ParamEnv<'tcx>, ) -> DiagnosticBuilder<'tcx, ErrorGuaranteed>; fn note_conflicting_closure_bounds( @@ -521,7 +523,7 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { mut err: &mut Diagnostic, trait_pred: ty::PolyTraitPredicate<'tcx>, associated_ty: Option<(&'static str, Ty<'tcx>)>, - body_id: hir::HirId, + body_id: LocalDefId, ) { let trait_pred = self.resolve_numeric_literals_with_default(trait_pred); @@ -534,8 +536,9 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { // FIXME: Add check for trait bound that is already present, particularly `?Sized` so we // don't suggest `T: Sized + ?Sized`. - let mut hir_id = body_id; - while let Some(node) = self.tcx.hir().find(hir_id) { + let mut body_id = body_id; + while let Some(node) = self.tcx.hir().find_by_def_id(body_id) { + let hir_id = self.tcx.hir().local_def_id_to_hir_id(body_id); match node { hir::Node::Item(hir::Item { ident, @@ -712,8 +715,7 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { _ => {} } - - hir_id = self.tcx.hir().get_parent_item(hir_id).into(); + body_id = self.tcx.local_parent(body_id); } } @@ -904,8 +906,9 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { trait_pred.self_ty(), ); + let body_hir_id = self.tcx.hir().local_def_id_to_hir_id(obligation.cause.body_id); let Some((def_id_or_name, output, inputs)) = self.extract_callable_info( - obligation.cause.body_id, + body_hir_id, obligation.param_env, self_ty, ) else { return false; }; @@ -1003,8 +1006,9 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { span.remove_mark(); } let mut expr_finder = FindExprBySpan::new(span); - let Some(hir::Node::Expr(body)) = self.tcx.hir().find(obligation.cause.body_id) else { return; }; - expr_finder.visit_expr(&body); + let Some(body_id) = self.tcx.hir().maybe_body_owned_by(obligation.cause.body_id) else { return; }; + let body = self.tcx.hir().body(body_id); + expr_finder.visit_expr(body.value); let Some(expr) = expr_finder.result else { return; }; let Some(typeck) = &self.typeck_results else { return; }; let Some(ty) = typeck.expr_ty_adjusted_opt(expr) else { return; }; @@ -1059,8 +1063,7 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { ) -> bool { let self_ty = self.resolve_vars_if_possible(trait_pred.self_ty()); let ty = self.tcx.erase_late_bound_regions(self_ty); - let owner = self.tcx.hir().get_parent_item(obligation.cause.body_id); - let Some(generics) = self.tcx.hir().get_generics(owner.def_id) else { return false }; + let Some(generics) = self.tcx.hir().get_generics(obligation.cause.body_id) else { return false }; let ty::Ref(_, inner_ty, hir::Mutability::Not) = ty.kind() else { return false }; let ty::Param(param) = inner_ty.kind() else { return false }; let ObligationCauseCode::FunctionArgumentObligation { arg_hir_id, .. } = obligation.cause.code() else { return false }; @@ -1103,6 +1106,7 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { /// Extracts information about a callable type for diagnostics. This is a /// heuristic -- it doesn't necessarily mean that a type is always callable, /// because the callable type must also be well-formed to be called. + // FIXME(vincenzopalazzo): move the HirId to a LocalDefId fn extract_callable_info( &self, hir_id: HirId, @@ -1428,10 +1432,11 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { span.remove_mark(); } let mut expr_finder = super::FindExprBySpan::new(span); - let Some(hir::Node::Expr(body)) = self.tcx.hir().find(obligation.cause.body_id) else { + let Some(body_id) = self.tcx.hir().maybe_body_owned_by(obligation.cause.body_id) else { return false; }; - expr_finder.visit_expr(&body); + let body = self.tcx.hir().body(body_id); + expr_finder.visit_expr(body.value); let mut maybe_suggest = |suggested_ty, count, suggestions| { // Remapping bound vars here let trait_pred_and_suggested_ty = @@ -1669,8 +1674,7 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { trait_pred: ty::PolyTraitPredicate<'tcx>, ) -> bool { let hir = self.tcx.hir(); - let parent_node = hir.parent_id(obligation.cause.body_id); - let node = hir.find(parent_node); + let node = hir.find_by_def_id(obligation.cause.body_id); if let Some(hir::Node::Item(hir::Item { kind: hir::ItemKind::Fn(sig, _, body_id), .. })) = node && let hir::ExprKind::Block(blk, _) = &hir.body(*body_id).value.kind && sig.decl.output.span().overlaps(span) @@ -1706,8 +1710,7 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { fn return_type_span(&self, obligation: &PredicateObligation<'tcx>) -> Option<Span> { let hir = self.tcx.hir(); - let parent_node = hir.parent_id(obligation.cause.body_id); - let Some(hir::Node::Item(hir::Item { kind: hir::ItemKind::Fn(sig, ..), .. })) = hir.find(parent_node) else { + let Some(hir::Node::Item(hir::Item { kind: hir::ItemKind::Fn(sig, ..), .. })) = hir.find_by_def_id(obligation.cause.body_id) else { return None; }; @@ -1731,8 +1734,8 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { } let hir = self.tcx.hir(); - let fn_hir_id = hir.parent_id(obligation.cause.body_id); - let node = hir.find(fn_hir_id); + let fn_hir_id = hir.local_def_id_to_hir_id(obligation.cause.body_id); + let node = hir.find_by_def_id(obligation.cause.body_id); let Some(hir::Node::Item(hir::Item { kind: hir::ItemKind::Fn(sig, _, body_id), .. @@ -1805,7 +1808,7 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { match liberated_sig.output().kind() { ty::Dynamic(predicates, _, ty::Dyn) => { - let cause = ObligationCause::misc(ret_ty.span, fn_hir_id); + let cause = ObligationCause::misc(ret_ty.span, obligation.cause.body_id); let param_env = ty::ParamEnv::empty(); if !only_never_return { @@ -1943,8 +1946,7 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { } let hir = self.tcx.hir(); - let parent_node = hir.parent_id(obligation.cause.body_id); - let node = hir.find(parent_node); + let node = hir.find_by_def_id(obligation.cause.body_id); if let Some(hir::Node::Item(hir::Item { kind: hir::ItemKind::Fn(_, _, body_id), .. })) = node { @@ -1978,6 +1980,7 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { expected: ty::PolyTraitRef<'tcx>, cause: &ObligationCauseCode<'tcx>, found_node: Option<Node<'_>>, + param_env: ty::ParamEnv<'tcx>, ) -> DiagnosticBuilder<'tcx, ErrorGuaranteed> { pub(crate) fn build_fn_sig_ty<'tcx>( infcx: &InferCtxt<'tcx>, @@ -2040,7 +2043,7 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { self.note_conflicting_closure_bounds(cause, &mut err); if let Some(found_node) = found_node { - hint_missing_borrow(span, found, expected, found_node, &mut err); + hint_missing_borrow(self, param_env, span, found, expected, found_node, &mut err); } err @@ -3281,12 +3284,7 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { trait_pred: ty::PolyTraitPredicate<'tcx>, span: Span, ) { - let body_hir_id = obligation.cause.body_id; - let item_id = self.tcx.hir().parent_id(body_hir_id); - - if let Some(body_id) = - self.tcx.hir().maybe_body_owned_by(self.tcx.hir().local_def_id(item_id)) - { + if let Some(body_id) = self.tcx.hir().maybe_body_owned_by(obligation.cause.body_id) { let body = self.tcx.hir().body(body_id); if let Some(hir::GeneratorKind::Async(_)) = body.generator_kind { let future_trait = self.tcx.require_lang_item(LangItem::Future, None); @@ -3725,9 +3723,14 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { term: ty_var.into(), }, ))); + let body_def_id = self.tcx.hir().enclosing_body_owner(body_id); // Add `<ExprTy as Iterator>::Item = _` obligation. ocx.register_obligation(Obligation::misc( - self.tcx, span, body_id, param_env, projection, + self.tcx, + span, + body_def_id, + param_env, + projection, )); if ocx.select_where_possible().is_empty() { // `ty_var` now holds the type that `Item` is for `ExprTy`. @@ -3747,6 +3750,8 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { /// Add a hint to add a missing borrow or remove an unnecessary one. fn hint_missing_borrow<'tcx>( + infcx: &InferCtxt<'tcx>, + param_env: ty::ParamEnv<'tcx>, span: Span, found: Ty<'tcx>, expected: Ty<'tcx>, @@ -3769,7 +3774,7 @@ fn hint_missing_borrow<'tcx>( // This could be a variant constructor, for example. let Some(fn_decl) = found_node.fn_decl() else { return; }; - let arg_spans = fn_decl.inputs.iter().map(|ty| ty.span); + let args = fn_decl.inputs.iter().map(|ty| ty); fn get_deref_type_and_refs(mut ty: Ty<'_>) -> (Ty<'_>, usize) { let mut refs = 0; @@ -3785,21 +3790,34 @@ fn hint_missing_borrow<'tcx>( let mut to_borrow = Vec::new(); let mut remove_borrow = Vec::new(); - for ((found_arg, expected_arg), arg_span) in found_args.zip(expected_args).zip(arg_spans) { + for ((found_arg, expected_arg), arg) in found_args.zip(expected_args).zip(args) { let (found_ty, found_refs) = get_deref_type_and_refs(*found_arg); let (expected_ty, expected_refs) = get_deref_type_and_refs(*expected_arg); - if found_ty == expected_ty { + if infcx.can_eq(param_env, found_ty, expected_ty).is_ok() { if found_refs < expected_refs { - to_borrow.push((arg_span, expected_arg.to_string())); + to_borrow.push((arg.span.shrink_to_lo(), "&".repeat(expected_refs - found_refs))); } else if found_refs > expected_refs { - remove_borrow.push((arg_span, expected_arg.to_string())); + let mut span = arg.span.shrink_to_lo(); + let mut left = found_refs - expected_refs; + let mut ty = arg; + while let hir::TyKind::Ref(_, mut_ty) = &ty.kind && left > 0 { + span = span.with_hi(mut_ty.ty.span.lo()); + ty = mut_ty.ty; + left -= 1; + } + let sugg = if left == 0 { + (span, String::new()) + } else { + (arg.span, expected_arg.to_string()) + }; + remove_borrow.push(sugg); } } } if !to_borrow.is_empty() { - err.multipart_suggestion( + err.multipart_suggestion_verbose( "consider borrowing the argument", to_borrow, Applicability::MaybeIncorrect, @@ -3807,7 +3825,7 @@ fn hint_missing_borrow<'tcx>( } if !remove_borrow.is_empty() { - err.multipart_suggestion( + err.multipart_suggestion_verbose( "do not borrow the argument", remove_borrow, Applicability::MaybeIncorrect, diff --git a/compiler/rustc_trait_selection/src/traits/fulfill.rs b/compiler/rustc_trait_selection/src/traits/fulfill.rs index 76a755ed9e0..5a58d37e183 100644 --- a/compiler/rustc_trait_selection/src/traits/fulfill.rs +++ b/compiler/rustc_trait_selection/src/traits/fulfill.rs @@ -1,5 +1,4 @@ use crate::infer::{InferCtxt, TyOrConstInferVar}; -use rustc_data_structures::fx::FxHashMap; use rustc_data_structures::obligation_forest::ProcessResult; use rustc_data_structures::obligation_forest::{Error, ForestObligation, Outcome}; use rustc_data_structures::obligation_forest::{ObligationForest, ObligationProcessor}; @@ -54,8 +53,6 @@ pub struct FulfillmentContext<'tcx> { // fulfillment context. predicates: ObligationForest<PendingPredicateObligation<'tcx>>, - relationships: FxHashMap<ty::TyVid, ty::FoundRelationships>, - // Is it OK to register obligations into this infcx inside // an infcx snapshot? // @@ -85,19 +82,11 @@ static_assert_size!(PendingPredicateObligation<'_>, 72); impl<'a, 'tcx> FulfillmentContext<'tcx> { /// Creates a new fulfillment context. pub(super) fn new() -> FulfillmentContext<'tcx> { - FulfillmentContext { - predicates: ObligationForest::new(), - relationships: FxHashMap::default(), - usable_in_snapshot: false, - } + FulfillmentContext { predicates: ObligationForest::new(), usable_in_snapshot: false } } pub(super) fn new_in_snapshot() -> FulfillmentContext<'tcx> { - FulfillmentContext { - predicates: ObligationForest::new(), - relationships: FxHashMap::default(), - usable_in_snapshot: true, - } + FulfillmentContext { predicates: ObligationForest::new(), usable_in_snapshot: true } } /// Attempts to select obligations using `selcx`. @@ -139,8 +128,6 @@ impl<'tcx> TraitEngine<'tcx> for FulfillmentContext<'tcx> { assert!(!infcx.is_in_snapshot() || self.usable_in_snapshot); - super::relationships::update(self, infcx, &obligation); - self.predicates .register_obligation(PendingPredicateObligation { obligation, stalled_on: vec![] }); } @@ -164,10 +151,6 @@ impl<'tcx> TraitEngine<'tcx> for FulfillmentContext<'tcx> { fn pending_obligations(&self) -> Vec<PredicateObligation<'tcx>> { self.predicates.map_pending_obligations(|o| o.obligation.clone()) } - - fn relationships(&mut self) -> &mut FxHashMap<ty::TyVid, ty::FoundRelationships> { - &mut self.relationships - } } struct FulfillProcessor<'a, 'tcx> { diff --git a/compiler/rustc_trait_selection/src/traits/misc.rs b/compiler/rustc_trait_selection/src/traits/misc.rs index b6ded4ce5a3..a41a601f2db 100644 --- a/compiler/rustc_trait_selection/src/traits/misc.rs +++ b/compiler/rustc_trait_selection/src/traits/misc.rs @@ -1,29 +1,36 @@ //! Miscellaneous type-system utilities that are too small to deserve their own modules. -use crate::infer::InferCtxtExt as _; use crate::traits::{self, ObligationCause}; +use rustc_data_structures::fx::FxIndexSet; use rustc_hir as hir; -use rustc_infer::infer::TyCtxtInferExt; +use rustc_infer::infer::{RegionResolutionError, TyCtxtInferExt}; +use rustc_infer::{infer::outlives::env::OutlivesEnvironment, traits::FulfillmentError}; use rustc_middle::ty::{self, Ty, TyCtxt, TypeVisitable}; -use crate::traits::error_reporting::TypeErrCtxtExt; +use super::outlives_bounds::InferCtxtExt; -#[derive(Clone)] pub enum CopyImplementationError<'tcx> { - InfrigingFields(Vec<(&'tcx ty::FieldDef, Ty<'tcx>)>), + InfrigingFields(Vec<(&'tcx ty::FieldDef, Ty<'tcx>, InfringingFieldsReason<'tcx>)>), NotAnAdt, HasDestructor, } -pub fn can_type_implement_copy<'tcx>( +pub enum InfringingFieldsReason<'tcx> { + Fulfill(Vec<FulfillmentError<'tcx>>), + Regions(Vec<RegionResolutionError<'tcx>>), +} + +/// Checks that the fields of the type (an ADT) all implement copy. +/// +/// If fields don't implement copy, return an error containing a list of +/// those violating fields. If it's not an ADT, returns `Err(NotAnAdt)`. +pub fn type_allowed_to_implement_copy<'tcx>( tcx: TyCtxt<'tcx>, param_env: ty::ParamEnv<'tcx>, self_type: Ty<'tcx>, parent_cause: ObligationCause<'tcx>, ) -> Result<(), CopyImplementationError<'tcx>> { - // FIXME: (@jroesch) float this code up - let infcx = tcx.infer_ctxt().build(); let (adt, substs) = match self_type.kind() { // These types used to have a builtin impl. // Now libcore provides that impl. @@ -42,42 +49,82 @@ pub fn can_type_implement_copy<'tcx>( _ => return Err(CopyImplementationError::NotAnAdt), }; + let copy_def_id = tcx.require_lang_item(hir::LangItem::Copy, Some(parent_cause.span)); + let mut infringing = Vec::new(); for variant in adt.variants() { for field in &variant.fields { - let ty = field.ty(tcx, substs); - if ty.references_error() { + // Do this per-field to get better error messages. + let infcx = tcx.infer_ctxt().build(); + let ocx = traits::ObligationCtxt::new(&infcx); + + let unnormalized_ty = field.ty(tcx, substs); + if unnormalized_ty.references_error() { continue; } - let span = tcx.def_span(field.did); + + let field_span = tcx.def_span(field.did); + let field_ty_span = match tcx.hir().get_if_local(field.did) { + Some(hir::Node::Field(field_def)) => field_def.ty.span, + _ => field_span, + }; + // FIXME(compiler-errors): This gives us better spans for bad // projection types like in issue-50480. // If the ADT has substs, point to the cause we are given. // If it does not, then this field probably doesn't normalize // to begin with, and point to the bad field's span instead. - let cause = if field + let normalization_cause = if field .ty(tcx, traits::InternalSubsts::identity_for_item(tcx, adt.did())) .has_non_region_param() { parent_cause.clone() } else { - ObligationCause::dummy_with_span(span) - }; - match traits::fully_normalize(&infcx, cause, param_env, ty) { - Ok(ty) => { - if !infcx.type_is_copy_modulo_regions(param_env, ty, span) { - infringing.push((field, ty)); - } - } - Err(errors) => { - infcx.err_ctxt().report_fulfillment_errors(&errors, None); - } + ObligationCause::dummy_with_span(field_ty_span) }; + let ty = ocx.normalize(&normalization_cause, param_env, unnormalized_ty); + let normalization_errors = ocx.select_where_possible(); + if !normalization_errors.is_empty() { + tcx.sess.delay_span_bug(field_span, format!("couldn't normalize struct field `{unnormalized_ty}` when checking Copy implementation")); + continue; + } + + ocx.register_bound( + ObligationCause::dummy_with_span(field_ty_span), + param_env, + ty, + copy_def_id, + ); + let errors = ocx.select_all_or_error(); + if !errors.is_empty() { + infringing.push((field, ty, InfringingFieldsReason::Fulfill(errors))); + } + + // Check regions assuming the self type of the impl is WF + let outlives_env = OutlivesEnvironment::with_bounds( + param_env, + Some(&infcx), + infcx.implied_bounds_tys( + param_env, + parent_cause.body_id, + FxIndexSet::from_iter([self_type]), + ), + ); + infcx.process_registered_region_obligations( + outlives_env.region_bound_pairs(), + param_env, + ); + let errors = infcx.resolve_regions(&outlives_env); + if !errors.is_empty() { + infringing.push((field, ty, InfringingFieldsReason::Regions(errors))); + } } } + if !infringing.is_empty() { return Err(CopyImplementationError::InfrigingFields(infringing)); } + if adt.has_dtor(tcx) { return Err(CopyImplementationError::HasDestructor); } diff --git a/compiler/rustc_trait_selection/src/traits/mod.rs b/compiler/rustc_trait_selection/src/traits/mod.rs index f036a311d46..83458017e00 100644 --- a/compiler/rustc_trait_selection/src/traits/mod.rs +++ b/compiler/rustc_trait_selection/src/traits/mod.rs @@ -14,7 +14,6 @@ mod object_safety; pub mod outlives_bounds; mod project; pub mod query; -pub(crate) mod relationships; mod select; mod specialize; mod structural_match; @@ -27,12 +26,11 @@ use crate::infer::{InferCtxt, TyCtxtInferExt}; use crate::traits::error_reporting::TypeErrCtxtExt as _; use crate::traits::query::evaluate_obligation::InferCtxtExt as _; use rustc_errors::ErrorGuaranteed; -use rustc_hir as hir; -use rustc_hir::def_id::DefId; use rustc_middle::ty::fold::TypeFoldable; use rustc_middle::ty::visit::TypeVisitable; use rustc_middle::ty::{self, DefIdTree, ToPredicate, Ty, TyCtxt, TypeSuperVisitable}; use rustc_middle::ty::{InternalSubsts, SubstsRef}; +use rustc_span::def_id::{DefId, CRATE_DEF_ID}; use rustc_span::Span; use std::fmt::Debug; @@ -152,7 +150,7 @@ fn pred_known_to_hold_modulo_regions<'tcx>( // We can use a dummy node-id here because we won't pay any mind // to region obligations that arise (there shouldn't really be any // anyhow). - cause: ObligationCause::misc(span, hir::CRATE_HIR_ID), + cause: ObligationCause::misc(span, CRATE_DEF_ID), recursion_depth: 0, predicate: pred.to_predicate(infcx.tcx), }; @@ -167,14 +165,12 @@ fn pred_known_to_hold_modulo_regions<'tcx>( // that guess. While imperfect, I believe this is sound. // FIXME(@lcnr): this function doesn't seem right. + // // The handling of regions in this area of the code is terrible, // see issue #29149. We should be able to improve on this with // NLL. let errors = fully_solve_obligation(infcx, obligation); - // Note: we only assume something is `Copy` if we can - // *definitively* show that it implements `Copy`. Otherwise, - // assume it is move; linear is always ok. match &errors[..] { [] => true, errors => { diff --git a/compiler/rustc_trait_selection/src/traits/outlives_bounds.rs b/compiler/rustc_trait_selection/src/traits/outlives_bounds.rs index f2c5f730b31..6cb64ad574f 100644 --- a/compiler/rustc_trait_selection/src/traits/outlives_bounds.rs +++ b/compiler/rustc_trait_selection/src/traits/outlives_bounds.rs @@ -3,9 +3,8 @@ use crate::traits::query::type_op::{self, TypeOp, TypeOpOutput}; use crate::traits::query::NoSolution; use crate::traits::ObligationCause; use rustc_data_structures::fx::FxIndexSet; -use rustc_hir as hir; -use rustc_hir::HirId; use rustc_middle::ty::{self, ParamEnv, Ty}; +use rustc_span::def_id::LocalDefId; pub use rustc_middle::traits::query::OutlivesBound; @@ -14,14 +13,14 @@ pub trait InferCtxtExt<'a, 'tcx> { fn implied_outlives_bounds( &self, param_env: ty::ParamEnv<'tcx>, - body_id: hir::HirId, + body_id: LocalDefId, ty: Ty<'tcx>, ) -> Vec<OutlivesBound<'tcx>>; fn implied_bounds_tys( &'a self, param_env: ty::ParamEnv<'tcx>, - body_id: hir::HirId, + body_id: LocalDefId, tys: FxIndexSet<Ty<'tcx>>, ) -> Bounds<'a, 'tcx>; } @@ -50,10 +49,10 @@ impl<'a, 'tcx: 'a> InferCtxtExt<'a, 'tcx> for InferCtxt<'tcx> { fn implied_outlives_bounds( &self, param_env: ty::ParamEnv<'tcx>, - body_id: hir::HirId, + body_id: LocalDefId, ty: Ty<'tcx>, ) -> Vec<OutlivesBound<'tcx>> { - let span = self.tcx.hir().span(body_id); + let span = self.tcx.def_span(body_id); let result = param_env .and(type_op::implied_outlives_bounds::ImpliedOutlivesBounds { ty }) .fully_perform(self); @@ -102,7 +101,7 @@ impl<'a, 'tcx: 'a> InferCtxtExt<'a, 'tcx> for InferCtxt<'tcx> { fn implied_bounds_tys( &'a self, param_env: ParamEnv<'tcx>, - body_id: HirId, + body_id: LocalDefId, tys: FxIndexSet<Ty<'tcx>>, ) -> Bounds<'a, 'tcx> { tys.into_iter() diff --git a/compiler/rustc_trait_selection/src/traits/query/normalize.rs b/compiler/rustc_trait_selection/src/traits/query/normalize.rs index 1531c50760d..27247271d1f 100644 --- a/compiler/rustc_trait_selection/src/traits/query/normalize.rs +++ b/compiler/rustc_trait_selection/src/traits/query/normalize.rs @@ -201,7 +201,7 @@ impl<'cx, 'tcx> FallibleTypeFolder<'tcx> for QueryNormalizer<'cx, 'tcx> { // wait to fold the substs. // Wrap this in a closure so we don't accidentally return from the outer function - let res = (|| match *ty.kind() { + let res = match *ty.kind() { // This is really important. While we *can* handle this, this has // severe performance implications for large opaque types with // late-bound regions. See `issue-88862` benchmark. @@ -210,7 +210,7 @@ impl<'cx, 'tcx> FallibleTypeFolder<'tcx> for QueryNormalizer<'cx, 'tcx> { { // Only normalize `impl Trait` outside of type inference, usually in codegen. match self.param_env.reveal() { - Reveal::UserFacing => ty.try_super_fold_with(self), + Reveal::UserFacing => ty.try_super_fold_with(self)?, Reveal::All => { let substs = substs.try_fold_with(self)?; @@ -239,7 +239,7 @@ impl<'cx, 'tcx> FallibleTypeFolder<'tcx> for QueryNormalizer<'cx, 'tcx> { } let folded_ty = ensure_sufficient_stack(|| self.try_fold_ty(concrete_ty)); self.anon_depth -= 1; - folded_ty + folded_ty? } } } @@ -287,9 +287,9 @@ impl<'cx, 'tcx> FallibleTypeFolder<'tcx> for QueryNormalizer<'cx, 'tcx> { // `tcx.normalize_projection_ty` may normalize to a type that still has // unevaluated consts, so keep normalizing here if that's the case. if res != ty && res.has_type_flags(ty::TypeFlags::HAS_CT_PROJECTION) { - Ok(res.try_super_fold_with(self)?) + res.try_super_fold_with(self)? } else { - Ok(res) + res } } @@ -344,14 +344,14 @@ impl<'cx, 'tcx> FallibleTypeFolder<'tcx> for QueryNormalizer<'cx, 'tcx> { // `tcx.normalize_projection_ty` may normalize to a type that still has // unevaluated consts, so keep normalizing here if that's the case. if res != ty && res.has_type_flags(ty::TypeFlags::HAS_CT_PROJECTION) { - Ok(res.try_super_fold_with(self)?) + res.try_super_fold_with(self)? } else { - Ok(res) + res } } - _ => ty.try_super_fold_with(self), - })()?; + _ => ty.try_super_fold_with(self)?, + }; self.cache.insert(ty, res); Ok(res) diff --git a/compiler/rustc_trait_selection/src/traits/relationships.rs b/compiler/rustc_trait_selection/src/traits/relationships.rs deleted file mode 100644 index 34b5fc4891e..00000000000 --- a/compiler/rustc_trait_selection/src/traits/relationships.rs +++ /dev/null @@ -1,48 +0,0 @@ -use crate::infer::InferCtxt; -use crate::traits::query::evaluate_obligation::InferCtxtExt; -use crate::traits::PredicateObligation; -use rustc_infer::traits::TraitEngine; -use rustc_middle::ty; - -pub(crate) fn update<'tcx, T>( - engine: &mut T, - infcx: &InferCtxt<'tcx>, - obligation: &PredicateObligation<'tcx>, -) where - T: TraitEngine<'tcx>, -{ - // (*) binder skipped - if let ty::PredicateKind::Clause(ty::Clause::Trait(tpred)) = obligation.predicate.kind().skip_binder() - && let Some(ty) = infcx.shallow_resolve(tpred.self_ty()).ty_vid().map(|t| infcx.root_var(t)) - && infcx.tcx.lang_items().sized_trait().map_or(false, |st| st != tpred.trait_ref.def_id) - { - let new_self_ty = infcx.tcx.types.unit; - - // Then construct a new obligation with Self = () added - // to the ParamEnv, and see if it holds. - let o = obligation.with(infcx.tcx, - obligation - .predicate - .kind() - .rebind( - // (*) binder moved here - ty::PredicateKind::Clause(ty::Clause::Trait(tpred.with_self_ty(infcx.tcx, new_self_ty))) - ), - ); - // Don't report overflow errors. Otherwise equivalent to may_hold. - if let Ok(result) = infcx.probe(|_| infcx.evaluate_obligation(&o)) && result.may_apply() { - engine.relationships().entry(ty).or_default().self_in_trait = true; - } - } - - if let ty::PredicateKind::Clause(ty::Clause::Projection(predicate)) = - obligation.predicate.kind().skip_binder() - { - // If the projection predicate (Foo::Bar == X) has X as a non-TyVid, - // we need to make it into one. - if let Some(vid) = predicate.term.ty().and_then(|ty| ty.ty_vid()) { - debug!("relationship: {:?}.output = true", vid); - engine.relationships().entry(vid).or_default().output = true; - } - } -} diff --git a/compiler/rustc_trait_selection/src/traits/select/candidate_assembly.rs b/compiler/rustc_trait_selection/src/traits/select/candidate_assembly.rs index 2733d9643fd..87d574ff107 100644 --- a/compiler/rustc_trait_selection/src/traits/select/candidate_assembly.rs +++ b/compiler/rustc_trait_selection/src/traits/select/candidate_assembly.rs @@ -174,8 +174,8 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> { .param_env .caller_bounds() .iter() - .filter_map(|p| p.to_opt_poly_trait_pred()) - .filter(|p| !p.references_error()); + .filter(|p| !p.references_error()) + .filter_map(|p| p.to_opt_poly_trait_pred()); // Micro-optimization: filter out predicates relating to different traits. let matching_bounds = diff --git a/compiler/rustc_trait_selection/src/traits/wf.rs b/compiler/rustc_trait_selection/src/traits/wf.rs index 12d4cb4fc69..d9556848099 100644 --- a/compiler/rustc_trait_selection/src/traits/wf.rs +++ b/compiler/rustc_trait_selection/src/traits/wf.rs @@ -1,10 +1,10 @@ use crate::infer::InferCtxt; use crate::traits; use rustc_hir as hir; -use rustc_hir::def_id::DefId; use rustc_hir::lang_items::LangItem; use rustc_middle::ty::subst::{GenericArg, GenericArgKind, SubstsRef}; use rustc_middle::ty::{self, Ty, TyCtxt, TypeVisitable}; +use rustc_span::def_id::{DefId, LocalDefId}; use rustc_span::Span; use std::iter; @@ -17,7 +17,7 @@ use std::iter; pub fn obligations<'tcx>( infcx: &InferCtxt<'tcx>, param_env: ty::ParamEnv<'tcx>, - body_id: hir::HirId, + body_id: LocalDefId, recursion_depth: usize, arg: GenericArg<'tcx>, span: Span, @@ -82,7 +82,7 @@ pub fn obligations<'tcx>( pub fn trait_obligations<'tcx>( infcx: &InferCtxt<'tcx>, param_env: ty::ParamEnv<'tcx>, - body_id: hir::HirId, + body_id: LocalDefId, trait_pred: &ty::TraitPredicate<'tcx>, span: Span, item: &'tcx hir::Item<'tcx>, @@ -105,7 +105,7 @@ pub fn trait_obligations<'tcx>( pub fn predicate_obligations<'tcx>( infcx: &InferCtxt<'tcx>, param_env: ty::ParamEnv<'tcx>, - body_id: hir::HirId, + body_id: LocalDefId, predicate: ty::Predicate<'tcx>, span: Span, ) -> Vec<traits::PredicateObligation<'tcx>> { @@ -167,7 +167,7 @@ pub fn predicate_obligations<'tcx>( struct WfPredicates<'tcx> { tcx: TyCtxt<'tcx>, param_env: ty::ParamEnv<'tcx>, - body_id: hir::HirId, + body_id: LocalDefId, span: Span, out: Vec<traits::PredicateObligation<'tcx>>, recursion_depth: usize, diff --git a/compiler/rustc_traits/src/implied_outlives_bounds.rs b/compiler/rustc_traits/src/implied_outlives_bounds.rs index 7d2d8433c93..fe633d687d9 100644 --- a/compiler/rustc_traits/src/implied_outlives_bounds.rs +++ b/compiler/rustc_traits/src/implied_outlives_bounds.rs @@ -2,13 +2,13 @@ //! Do not call this query directory. See //! [`rustc_trait_selection::traits::query::type_op::implied_outlives_bounds`]. -use rustc_hir as hir; use rustc_infer::infer::canonical::{self, Canonical}; use rustc_infer::infer::outlives::components::{push_outlives_components, Component}; use rustc_infer::infer::TyCtxtInferExt; use rustc_infer::traits::query::OutlivesBound; use rustc_middle::ty::query::Providers; use rustc_middle::ty::{self, Ty, TyCtxt, TypeVisitable}; +use rustc_span::def_id::CRATE_DEF_ID; use rustc_span::source_map::DUMMY_SP; use rustc_trait_selection::infer::InferCtxtBuilderExt; use rustc_trait_selection::traits::query::{CanonicalTyGoal, Fallible, NoSolution}; @@ -67,9 +67,8 @@ fn compute_implied_outlives_bounds<'tcx>( // FIXME(@lcnr): It's not really "always fine", having fewer implied // bounds can be backward incompatible, e.g. #101951 was caused by // us not dealing with inference vars in `TypeOutlives` predicates. - let obligations = - wf::obligations(ocx.infcx, param_env, hir::CRATE_HIR_ID, 0, arg, DUMMY_SP) - .unwrap_or_default(); + let obligations = wf::obligations(ocx.infcx, param_env, CRATE_DEF_ID, 0, arg, DUMMY_SP) + .unwrap_or_default(); // While these predicates should all be implied by other parts of // the program, they are still relevant as they may constrain diff --git a/compiler/rustc_traits/src/type_op.rs b/compiler/rustc_traits/src/type_op.rs index f35c5e44882..27dc1625992 100644 --- a/compiler/rustc_traits/src/type_op.rs +++ b/compiler/rustc_traits/src/type_op.rs @@ -6,6 +6,7 @@ use rustc_middle::ty::query::Providers; use rustc_middle::ty::{self, FnSig, Lift, PolyFnSig, Ty, TyCtxt, TypeFoldable}; use rustc_middle::ty::{ParamEnvAnd, Predicate}; use rustc_middle::ty::{UserSelfTy, UserSubsts, UserType}; +use rustc_span::def_id::CRATE_DEF_ID; use rustc_span::{Span, DUMMY_SP}; use rustc_trait_selection::infer::InferCtxtBuilderExt; use rustc_trait_selection::traits::query::normalize::QueryNormalizeExt; @@ -76,7 +77,6 @@ fn relate_mir_and_user_ty<'tcx>( // FIXME(#104764): We should check well-formedness before normalization. let predicate = ty::Binder::dummy(ty::PredicateKind::WellFormed(user_ty.into())); ocx.register_obligation(Obligation::new(ocx.infcx.tcx, cause, param_env, predicate)); - Ok(()) } @@ -111,7 +111,7 @@ fn relate_mir_and_user_substs<'tcx>( let span = if span == DUMMY_SP { predicate_span } else { span }; let cause = ObligationCause::new( span, - hir::CRATE_HIR_ID, + CRATE_DEF_ID, ObligationCauseCode::AscribeUserTypeProvePredicate(predicate_span), ); let instantiated_predicate = @@ -126,7 +126,6 @@ fn relate_mir_and_user_substs<'tcx>( let impl_self_ty = ocx.normalize(&cause, param_env, impl_self_ty); ocx.eq(&cause, param_env, self_ty, impl_self_ty)?; - let predicate = ty::Binder::dummy(ty::PredicateKind::WellFormed(impl_self_ty.into())); ocx.register_obligation(Obligation::new(tcx, cause.clone(), param_env, predicate)); } diff --git a/compiler/rustc_ty_utils/src/ty.rs b/compiler/rustc_ty_utils/src/ty.rs index eb5454bf263..13a76648690 100644 --- a/compiler/rustc_ty_utils/src/ty.rs +++ b/compiler/rustc_ty_utils/src/ty.rs @@ -1,8 +1,8 @@ use rustc_data_structures::fx::FxIndexSet; use rustc_hir as hir; -use rustc_hir::def_id::DefId; use rustc_middle::ty::{self, Binder, Predicate, PredicateKind, ToPredicate, Ty, TyCtxt}; use rustc_session::config::TraitSolver; +use rustc_span::def_id::{DefId, CRATE_DEF_ID}; use rustc_trait_selection::traits; fn sized_constraint_for_ty<'tcx>( @@ -208,14 +208,7 @@ fn param_env(tcx: TyCtxt<'_>, def_id: DefId) -> ty::ParamEnv<'_> { constness, ); - let body_id = - local_did.and_then(|id| tcx.hir().maybe_body_owned_by(id).map(|body| body.hir_id)); - let body_id = match body_id { - Some(id) => id, - None if hir_id.is_some() => hir_id.unwrap(), - _ => hir::CRATE_HIR_ID, - }; - + let body_id = local_did.unwrap_or(CRATE_DEF_ID); let cause = traits::ObligationCause::misc(tcx.def_span(def_id), body_id); traits::normalize_param_env_or_error(tcx, unnormalized_env, cause) } diff --git a/config.toml.example b/config.toml.example index 5e1d2f2e314..299bfd779e5 100644 --- a/config.toml.example +++ b/config.toml.example @@ -285,11 +285,24 @@ changelog-seen = 2 # be built if `extended = true`. #extended = false -# Installs chosen set of extended tools if `extended = true`. By default builds -# all extended tools except `rust-demangler`, unless the target is also being -# built with `profiler = true`. If chosen tool failed to build the installation -# fails. If `extended = false`, this option is ignored. -#tools = ["cargo", "rls", "clippy", "rustfmt", "analysis", "src"] # + "rust-demangler" if `profiler` +# Set of tools to be included in the installation. +# +# If `extended = false`, the only one of these built by default is rustdoc. +# +# If `extended = true`, they're all included, with the exception of +# rust-demangler which additionally requires `profiler = true` to be set. +# +# If any enabled tool fails to build, the installation fails. +#tools = [ +# "cargo", +# "clippy", +# "rustdoc", +# "rustfmt", +# "rust-analyzer", +# "analysis", +# "src", +# "rust-demangler", # if profiler = true +#] # Verbosity level: 0 == not verbose, 1 == verbose, 2 == very verbose #verbose = 0 diff --git a/library/alloc/src/boxed/thin.rs b/library/alloc/src/boxed/thin.rs index c1a82e452f6..ad48315fd70 100644 --- a/library/alloc/src/boxed/thin.rs +++ b/library/alloc/src/boxed/thin.rs @@ -48,7 +48,7 @@ unsafe impl<T: ?Sized + Sync> Sync for ThinBox<T> {} #[unstable(feature = "thin_box", issue = "92791")] impl<T> ThinBox<T> { - /// Moves a type to the heap with its `Metadata` stored in the heap allocation instead of on + /// Moves a type to the heap with its [`Metadata`] stored in the heap allocation instead of on /// the stack. /// /// # Examples @@ -59,6 +59,8 @@ impl<T> ThinBox<T> { /// /// let five = ThinBox::new(5); /// ``` + /// + /// [`Metadata`]: core::ptr::Pointee::Metadata #[cfg(not(no_global_oom_handling))] pub fn new(value: T) -> Self { let meta = ptr::metadata(&value); @@ -69,7 +71,7 @@ impl<T> ThinBox<T> { #[unstable(feature = "thin_box", issue = "92791")] impl<Dyn: ?Sized> ThinBox<Dyn> { - /// Moves a type to the heap with its `Metadata` stored in the heap allocation instead of on + /// Moves a type to the heap with its [`Metadata`] stored in the heap allocation instead of on /// the stack. /// /// # Examples @@ -80,6 +82,8 @@ impl<Dyn: ?Sized> ThinBox<Dyn> { /// /// let thin_slice = ThinBox::<[i32]>::new_unsize([1, 2, 3, 4]); /// ``` + /// + /// [`Metadata`]: core::ptr::Pointee::Metadata #[cfg(not(no_global_oom_handling))] pub fn new_unsize<T>(value: T) -> Self where diff --git a/library/alloc/src/slice.rs b/library/alloc/src/slice.rs index e9886fc5717..fecacc2bb63 100644 --- a/library/alloc/src/slice.rs +++ b/library/alloc/src/slice.rs @@ -19,10 +19,12 @@ use core::cmp::Ordering::{self, Less}; use core::mem::{self, SizedTypeProperties}; #[cfg(not(no_global_oom_handling))] use core::ptr; +#[cfg(not(no_global_oom_handling))] +use core::slice::sort; use crate::alloc::Allocator; #[cfg(not(no_global_oom_handling))] -use crate::alloc::Global; +use crate::alloc::{self, Global}; #[cfg(not(no_global_oom_handling))] use crate::borrow::ToOwned; use crate::boxed::Box; @@ -206,7 +208,7 @@ impl<T> [T] { where T: Ord, { - merge_sort(self, T::lt); + stable_sort(self, T::lt); } /// Sorts the slice with a comparator function. @@ -262,7 +264,7 @@ impl<T> [T] { where F: FnMut(&T, &T) -> Ordering, { - merge_sort(self, |a, b| compare(a, b) == Less); + stable_sort(self, |a, b| compare(a, b) == Less); } /// Sorts the slice with a key extraction function. @@ -305,7 +307,7 @@ impl<T> [T] { F: FnMut(&T) -> K, K: Ord, { - merge_sort(self, |a, b| f(a).lt(&f(b))); + stable_sort(self, |a, b| f(a).lt(&f(b))); } /// Sorts the slice with a key extraction function. @@ -812,324 +814,52 @@ impl<T: Clone> ToOwned for [T] { // Sorting //////////////////////////////////////////////////////////////////////////////// -/// Inserts `v[0]` into pre-sorted sequence `v[1..]` so that whole `v[..]` becomes sorted. -/// -/// This is the integral subroutine of insertion sort. -#[cfg(not(no_global_oom_handling))] -fn insert_head<T, F>(v: &mut [T], is_less: &mut F) -where - F: FnMut(&T, &T) -> bool, -{ - if v.len() >= 2 && is_less(&v[1], &v[0]) { - unsafe { - // There are three ways to implement insertion here: - // - // 1. Swap adjacent elements until the first one gets to its final destination. - // However, this way we copy data around more than is necessary. If elements are big - // structures (costly to copy), this method will be slow. - // - // 2. Iterate until the right place for the first element is found. Then shift the - // elements succeeding it to make room for it and finally place it into the - // remaining hole. This is a good method. - // - // 3. Copy the first element into a temporary variable. Iterate until the right place - // for it is found. As we go along, copy every traversed element into the slot - // preceding it. Finally, copy data from the temporary variable into the remaining - // hole. This method is very good. Benchmarks demonstrated slightly better - // performance than with the 2nd method. - // - // All methods were benchmarked, and the 3rd showed best results. So we chose that one. - let tmp = mem::ManuallyDrop::new(ptr::read(&v[0])); - - // Intermediate state of the insertion process is always tracked by `hole`, which - // serves two purposes: - // 1. Protects integrity of `v` from panics in `is_less`. - // 2. Fills the remaining hole in `v` in the end. - // - // Panic safety: - // - // If `is_less` panics at any point during the process, `hole` will get dropped and - // fill the hole in `v` with `tmp`, thus ensuring that `v` still holds every object it - // initially held exactly once. - let mut hole = InsertionHole { src: &*tmp, dest: &mut v[1] }; - ptr::copy_nonoverlapping(&v[1], &mut v[0], 1); - - for i in 2..v.len() { - if !is_less(&v[i], &*tmp) { - break; - } - ptr::copy_nonoverlapping(&v[i], &mut v[i - 1], 1); - hole.dest = &mut v[i]; - } - // `hole` gets dropped and thus copies `tmp` into the remaining hole in `v`. - } - } - - // When dropped, copies from `src` into `dest`. - struct InsertionHole<T> { - src: *const T, - dest: *mut T, - } - - impl<T> Drop for InsertionHole<T> { - fn drop(&mut self) { - unsafe { - ptr::copy_nonoverlapping(self.src, self.dest, 1); - } - } - } -} - -/// Merges non-decreasing runs `v[..mid]` and `v[mid..]` using `buf` as temporary storage, and -/// stores the result into `v[..]`. -/// -/// # Safety -/// -/// The two slices must be non-empty and `mid` must be in bounds. Buffer `buf` must be long enough -/// to hold a copy of the shorter slice. Also, `T` must not be a zero-sized type. -#[cfg(not(no_global_oom_handling))] -unsafe fn merge<T, F>(v: &mut [T], mid: usize, buf: *mut T, is_less: &mut F) -where - F: FnMut(&T, &T) -> bool, -{ - let len = v.len(); - let v = v.as_mut_ptr(); - let (v_mid, v_end) = unsafe { (v.add(mid), v.add(len)) }; - - // The merge process first copies the shorter run into `buf`. Then it traces the newly copied - // run and the longer run forwards (or backwards), comparing their next unconsumed elements and - // copying the lesser (or greater) one into `v`. - // - // As soon as the shorter run is fully consumed, the process is done. If the longer run gets - // consumed first, then we must copy whatever is left of the shorter run into the remaining - // hole in `v`. - // - // Intermediate state of the process is always tracked by `hole`, which serves two purposes: - // 1. Protects integrity of `v` from panics in `is_less`. - // 2. Fills the remaining hole in `v` if the longer run gets consumed first. - // - // Panic safety: - // - // If `is_less` panics at any point during the process, `hole` will get dropped and fill the - // hole in `v` with the unconsumed range in `buf`, thus ensuring that `v` still holds every - // object it initially held exactly once. - let mut hole; - - if mid <= len - mid { - // The left run is shorter. - unsafe { - ptr::copy_nonoverlapping(v, buf, mid); - hole = MergeHole { start: buf, end: buf.add(mid), dest: v }; - } - - // Initially, these pointers point to the beginnings of their arrays. - let left = &mut hole.start; - let mut right = v_mid; - let out = &mut hole.dest; - - while *left < hole.end && right < v_end { - // Consume the lesser side. - // If equal, prefer the left run to maintain stability. - unsafe { - let to_copy = if is_less(&*right, &**left) { - get_and_increment(&mut right) - } else { - get_and_increment(left) - }; - ptr::copy_nonoverlapping(to_copy, get_and_increment(out), 1); - } - } - } else { - // The right run is shorter. - unsafe { - ptr::copy_nonoverlapping(v_mid, buf, len - mid); - hole = MergeHole { start: buf, end: buf.add(len - mid), dest: v_mid }; - } - - // Initially, these pointers point past the ends of their arrays. - let left = &mut hole.dest; - let right = &mut hole.end; - let mut out = v_end; - - while v < *left && buf < *right { - // Consume the greater side. - // If equal, prefer the right run to maintain stability. - unsafe { - let to_copy = if is_less(&*right.sub(1), &*left.sub(1)) { - decrement_and_get(left) - } else { - decrement_and_get(right) - }; - ptr::copy_nonoverlapping(to_copy, decrement_and_get(&mut out), 1); - } - } - } - // Finally, `hole` gets dropped. If the shorter run was not fully consumed, whatever remains of - // it will now be copied into the hole in `v`. - - unsafe fn get_and_increment<T>(ptr: &mut *mut T) -> *mut T { - let old = *ptr; - *ptr = unsafe { ptr.add(1) }; - old - } - - unsafe fn decrement_and_get<T>(ptr: &mut *mut T) -> *mut T { - *ptr = unsafe { ptr.sub(1) }; - *ptr - } - - // When dropped, copies the range `start..end` into `dest..`. - struct MergeHole<T> { - start: *mut T, - end: *mut T, - dest: *mut T, - } - - impl<T> Drop for MergeHole<T> { - fn drop(&mut self) { - // `T` is not a zero-sized type, and these are pointers into a slice's elements. - unsafe { - let len = self.end.sub_ptr(self.start); - ptr::copy_nonoverlapping(self.start, self.dest, len); - } - } - } -} - -/// This merge sort borrows some (but not all) ideas from TimSort, which is described in detail -/// [here](https://github.com/python/cpython/blob/main/Objects/listsort.txt). -/// -/// The algorithm identifies strictly descending and non-descending subsequences, which are called -/// natural runs. There is a stack of pending runs yet to be merged. Each newly found run is pushed -/// onto the stack, and then some pairs of adjacent runs are merged until these two invariants are -/// satisfied: -/// -/// 1. for every `i` in `1..runs.len()`: `runs[i - 1].len > runs[i].len` -/// 2. for every `i` in `2..runs.len()`: `runs[i - 2].len > runs[i - 1].len + runs[i].len` -/// -/// The invariants ensure that the total running time is *O*(*n* \* log(*n*)) worst-case. +#[inline] #[cfg(not(no_global_oom_handling))] -fn merge_sort<T, F>(v: &mut [T], mut is_less: F) +fn stable_sort<T, F>(v: &mut [T], mut is_less: F) where F: FnMut(&T, &T) -> bool, { - // Slices of up to this length get sorted using insertion sort. - const MAX_INSERTION: usize = 20; - // Very short runs are extended using insertion sort to span at least this many elements. - const MIN_RUN: usize = 10; - - // Sorting has no meaningful behavior on zero-sized types. if T::IS_ZST { + // Sorting has no meaningful behavior on zero-sized types. Do nothing. return; } - let len = v.len(); - - // Short arrays get sorted in-place via insertion sort to avoid allocations. - if len <= MAX_INSERTION { - if len >= 2 { - for i in (0..len - 1).rev() { - insert_head(&mut v[i..], &mut is_less); - } - } - return; - } - - // Allocate a buffer to use as scratch memory. We keep the length 0 so we can keep in it - // shallow copies of the contents of `v` without risking the dtors running on copies if - // `is_less` panics. When merging two sorted runs, this buffer holds a copy of the shorter run, - // which will always have length at most `len / 2`. - let mut buf = Vec::with_capacity(len / 2); + let elem_alloc_fn = |len: usize| -> *mut T { + // SAFETY: Creating the layout is safe as long as merge_sort never calls this with len > + // v.len(). Alloc in general will only be used as 'shadow-region' to store temporary swap + // elements. + unsafe { alloc::alloc(alloc::Layout::array::<T>(len).unwrap_unchecked()) as *mut T } + }; - // In order to identify natural runs in `v`, we traverse it backwards. That might seem like a - // strange decision, but consider the fact that merges more often go in the opposite direction - // (forwards). According to benchmarks, merging forwards is slightly faster than merging - // backwards. To conclude, identifying runs by traversing backwards improves performance. - let mut runs = vec![]; - let mut end = len; - while end > 0 { - // Find the next natural run, and reverse it if it's strictly descending. - let mut start = end - 1; - if start > 0 { - start -= 1; - unsafe { - if is_less(v.get_unchecked(start + 1), v.get_unchecked(start)) { - while start > 0 && is_less(v.get_unchecked(start), v.get_unchecked(start - 1)) { - start -= 1; - } - v[start..end].reverse(); - } else { - while start > 0 && !is_less(v.get_unchecked(start), v.get_unchecked(start - 1)) - { - start -= 1; - } - } - } - } - - // Insert some more elements into the run if it's too short. Insertion sort is faster than - // merge sort on short sequences, so this significantly improves performance. - while start > 0 && end - start < MIN_RUN { - start -= 1; - insert_head(&mut v[start..end], &mut is_less); + let elem_dealloc_fn = |buf_ptr: *mut T, len: usize| { + // SAFETY: Creating the layout is safe as long as merge_sort never calls this with len > + // v.len(). The caller must ensure that buf_ptr was created by elem_alloc_fn with the same + // len. + unsafe { + alloc::dealloc(buf_ptr as *mut u8, alloc::Layout::array::<T>(len).unwrap_unchecked()); } + }; - // Push this run onto the stack. - runs.push(Run { start, len: end - start }); - end = start; - - // Merge some pairs of adjacent runs to satisfy the invariants. - while let Some(r) = collapse(&runs) { - let left = runs[r + 1]; - let right = runs[r]; - unsafe { - merge( - &mut v[left.start..right.start + right.len], - left.len, - buf.as_mut_ptr(), - &mut is_less, - ); - } - runs[r] = Run { start: left.start, len: left.len + right.len }; - runs.remove(r + 1); + let run_alloc_fn = |len: usize| -> *mut sort::TimSortRun { + // SAFETY: Creating the layout is safe as long as merge_sort never calls this with an + // obscene length or 0. + unsafe { + alloc::alloc(alloc::Layout::array::<sort::TimSortRun>(len).unwrap_unchecked()) + as *mut sort::TimSortRun } - } - - // Finally, exactly one run must remain in the stack. - debug_assert!(runs.len() == 1 && runs[0].start == 0 && runs[0].len == len); + }; - // Examines the stack of runs and identifies the next pair of runs to merge. More specifically, - // if `Some(r)` is returned, that means `runs[r]` and `runs[r + 1]` must be merged next. If the - // algorithm should continue building a new run instead, `None` is returned. - // - // TimSort is infamous for its buggy implementations, as described here: - // http://envisage-project.eu/timsort-specification-and-verification/ - // - // The gist of the story is: we must enforce the invariants on the top four runs on the stack. - // Enforcing them on just top three is not sufficient to ensure that the invariants will still - // hold for *all* runs in the stack. - // - // This function correctly checks invariants for the top four runs. Additionally, if the top - // run starts at index 0, it will always demand a merge operation until the stack is fully - // collapsed, in order to complete the sort. - #[inline] - fn collapse(runs: &[Run]) -> Option<usize> { - let n = runs.len(); - if n >= 2 - && (runs[n - 1].start == 0 - || runs[n - 2].len <= runs[n - 1].len - || (n >= 3 && runs[n - 3].len <= runs[n - 2].len + runs[n - 1].len) - || (n >= 4 && runs[n - 4].len <= runs[n - 3].len + runs[n - 2].len)) - { - if n >= 3 && runs[n - 3].len < runs[n - 1].len { Some(n - 3) } else { Some(n - 2) } - } else { - None + let run_dealloc_fn = |buf_ptr: *mut sort::TimSortRun, len: usize| { + // SAFETY: The caller must ensure that buf_ptr was created by elem_alloc_fn with the same + // len. + unsafe { + alloc::dealloc( + buf_ptr as *mut u8, + alloc::Layout::array::<sort::TimSortRun>(len).unwrap_unchecked(), + ); } - } + }; - #[derive(Clone, Copy)] - struct Run { - start: usize, - len: usize, - } + sort::merge_sort(v, &mut is_less, elem_alloc_fn, elem_dealloc_fn, run_alloc_fn, run_dealloc_fn); } diff --git a/library/alloc/src/sync.rs b/library/alloc/src/sync.rs index bab7f5f5365..9bc9182f7b5 100644 --- a/library/alloc/src/sync.rs +++ b/library/alloc/src/sync.rs @@ -654,6 +654,20 @@ impl<T> Arc<T> { /// /// This will succeed even if there are outstanding weak references. /// + // FIXME: when `Arc::into_inner` is stabilized, add this paragraph: + /* + /// It is strongly recommended to use [`Arc::into_inner`] instead if you don't + /// want to keep the `Arc` in the [`Err`] case. + /// Immediately dropping the [`Err`] payload, like in the expression + /// `Arc::try_unwrap(this).ok()`, can still cause the strong count to + /// drop to zero and the inner value of the `Arc` to be dropped: + /// For instance if two threads execute this expression in parallel, then + /// there is a race condition. The threads could first both check whether they + /// have the last clone of their `Arc` via `Arc::try_unwrap`, and then + /// both drop their `Arc` in the call to [`ok`][`Result::ok`], + /// taking the strong count from two down to zero. + /// + */ /// # Examples /// /// ``` @@ -685,6 +699,137 @@ impl<T> Arc<T> { Ok(elem) } } + + /// Returns the inner value, if the `Arc` has exactly one strong reference. + /// + /// Otherwise, [`None`] is returned and the `Arc` is dropped. + /// + /// This will succeed even if there are outstanding weak references. + /// + /// If `Arc::into_inner` is called on every clone of this `Arc`, + /// it is guaranteed that exactly one of the calls returns the inner value. + /// This means in particular that the inner value is not dropped. + /// + /// The similar expression `Arc::try_unwrap(this).ok()` does not + /// offer such a guarantee. See the last example below. + // + // FIXME: when `Arc::into_inner` is stabilized, add this to end + // of the previous sentence: + /* + /// and the documentation of [`Arc::try_unwrap`]. + */ + /// + /// # Examples + /// + /// Minimal example demonstrating the guarantee that `Arc::into_inner` gives. + /// ``` + /// #![feature(arc_into_inner)] + /// + /// use std::sync::Arc; + /// + /// let x = Arc::new(3); + /// let y = Arc::clone(&x); + /// + /// // Two threads calling `Arc::into_inner` on both clones of an `Arc`: + /// let x_thread = std::thread::spawn(|| Arc::into_inner(x)); + /// let y_thread = std::thread::spawn(|| Arc::into_inner(y)); + /// + /// let x_inner_value = x_thread.join().unwrap(); + /// let y_inner_value = y_thread.join().unwrap(); + /// + /// // One of the threads is guaranteed to receive the inner value: + /// assert!(matches!( + /// (x_inner_value, y_inner_value), + /// (None, Some(3)) | (Some(3), None) + /// )); + /// // The result could also be `(None, None)` if the threads called + /// // `Arc::try_unwrap(x).ok()` and `Arc::try_unwrap(y).ok()` instead. + /// ``` + /// + /// A more practical example demonstrating the need for `Arc::into_inner`: + /// ``` + /// #![feature(arc_into_inner)] + /// + /// use std::sync::Arc; + /// + /// // Definition of a simple singly linked list using `Arc`: + /// #[derive(Clone)] + /// struct LinkedList<T>(Option<Arc<Node<T>>>); + /// struct Node<T>(T, Option<Arc<Node<T>>>); + /// + /// // Dropping a long `LinkedList<T>` relying on the destructor of `Arc` + /// // can cause a stack overflow. To prevent this, we can provide a + /// // manual `Drop` implementation that does the destruction in a loop: + /// impl<T> Drop for LinkedList<T> { + /// fn drop(&mut self) { + /// let mut link = self.0.take(); + /// while let Some(arc_node) = link.take() { + /// if let Some(Node(_value, next)) = Arc::into_inner(arc_node) { + /// link = next; + /// } + /// } + /// } + /// } + /// + /// // Implementation of `new` and `push` omitted + /// impl<T> LinkedList<T> { + /// /* ... */ + /// # fn new() -> Self { + /// # LinkedList(None) + /// # } + /// # fn push(&mut self, x: T) { + /// # self.0 = Some(Arc::new(Node(x, self.0.take()))); + /// # } + /// } + /// + /// // The following code could have still caused a stack overflow + /// // despite the manual `Drop` impl if that `Drop` impl had used + /// // `Arc::try_unwrap(arc).ok()` instead of `Arc::into_inner(arc)`. + /// + /// // Create a long list and clone it + /// let mut x = LinkedList::new(); + /// for i in 0..100000 { + /// x.push(i); // Adds i to the front of x + /// } + /// let y = x.clone(); + /// + /// // Drop the clones in parallel + /// let x_thread = std::thread::spawn(|| drop(x)); + /// let y_thread = std::thread::spawn(|| drop(y)); + /// x_thread.join().unwrap(); + /// y_thread.join().unwrap(); + /// ``` + + // FIXME: when `Arc::into_inner` is stabilized, adjust above documentation + // and the documentation of `Arc::try_unwrap` according to the `FIXME`s. Also + // open an issue on rust-lang/rust-clippy, asking for a lint against + // `Arc::try_unwrap(...).ok()`. + #[inline] + #[unstable(feature = "arc_into_inner", issue = "106894")] + pub fn into_inner(this: Self) -> Option<T> { + // Make sure that the ordinary `Drop` implementation isn’t called as well + let mut this = mem::ManuallyDrop::new(this); + + // Following the implementation of `drop` and `drop_slow` + if this.inner().strong.fetch_sub(1, Release) != 1 { + return None; + } + + acquire!(this.inner().strong); + + // SAFETY: This mirrors the line + // + // unsafe { ptr::drop_in_place(Self::get_mut_unchecked(self)) }; + // + // in `drop_slow`. Instead of dropping the value behind the pointer, + // it is read and eventually returned; `ptr::read` has the same + // safety conditions as `ptr::drop_in_place`. + let inner = unsafe { ptr::read(Self::get_mut_unchecked(&mut this)) }; + + drop(Weak { ptr: this.ptr }); + + Some(inner) + } } impl<T> Arc<[T]> { diff --git a/library/alloc/src/sync/tests.rs b/library/alloc/src/sync/tests.rs index 0fae8953aa2..863d58bdf4d 100644 --- a/library/alloc/src/sync/tests.rs +++ b/library/alloc/src/sync/tests.rs @@ -102,6 +102,38 @@ fn try_unwrap() { } #[test] +fn into_inner() { + for _ in 0..100 + // ^ Increase chances of hitting potential race conditions + { + let x = Arc::new(3); + let y = Arc::clone(&x); + let r_thread = std::thread::spawn(|| Arc::into_inner(x)); + let s_thread = std::thread::spawn(|| Arc::into_inner(y)); + let r = r_thread.join().expect("r_thread panicked"); + let s = s_thread.join().expect("s_thread panicked"); + assert!( + matches!((r, s), (None, Some(3)) | (Some(3), None)), + "assertion failed: unexpected result `{:?}`\ + \n expected `(None, Some(3))` or `(Some(3), None)`", + (r, s), + ); + } + + let x = Arc::new(3); + assert_eq!(Arc::into_inner(x), Some(3)); + + let x = Arc::new(4); + let y = Arc::clone(&x); + assert_eq!(Arc::into_inner(x), None); + assert_eq!(Arc::into_inner(y), Some(4)); + + let x = Arc::new(5); + let _w = Arc::downgrade(&x); + assert_eq!(Arc::into_inner(x), Some(5)); +} + +#[test] fn into_from_raw() { let x = Arc::new(Box::new("hello")); let y = x.clone(); diff --git a/library/core/src/cell/once.rs b/library/core/src/cell/once.rs index 7757068a4f2..f74e563f1b9 100644 --- a/library/core/src/cell/once.rs +++ b/library/core/src/cell/once.rs @@ -298,3 +298,7 @@ impl<T> const From<T> for OnceCell<T> { OnceCell { inner: UnsafeCell::new(Some(value)) } } } + +// Just like for `Cell<T>` this isn't needed, but results in nicer error messages. +#[unstable(feature = "once_cell", issue = "74465")] +impl<T> !Sync for OnceCell<T> {} diff --git a/library/core/src/fmt/mod.rs b/library/core/src/fmt/mod.rs index fa5073e3304..0145ba5e3cd 100644 --- a/library/core/src/fmt/mod.rs +++ b/library/core/src/fmt/mod.rs @@ -489,9 +489,26 @@ pub struct Arguments<'a> { } impl<'a> Arguments<'a> { - /// Get the formatted string, if it has no arguments to be formatted. + /// Get the formatted string, if it has no arguments to be formatted at runtime. /// - /// This can be used to avoid allocations in the most trivial case. + /// This can be used to avoid allocations in some cases. + /// + /// # Guarantees + /// + /// For `format_args!("just a literal")`, this function is guaranteed to + /// return `Some("just a literal")`. + /// + /// For most cases with placeholders, this function will return `None`. + /// + /// However, the compiler may perform optimizations that can cause this + /// function to return `Some(_)` even if the format string contains + /// placeholders. For example, `format_args!("Hello, {}!", "world")` may be + /// optimized to `format_args!("Hello, world!")`, such that `as_str()` + /// returns `Some("Hello, world!")`. + /// + /// The behavior for anything but the trivial case (without placeholders) + /// is not guaranteed, and should not be relied upon for anything other + /// than optimization. /// /// # Examples /// @@ -512,7 +529,7 @@ impl<'a> Arguments<'a> { /// ```rust /// assert_eq!(format_args!("hello").as_str(), Some("hello")); /// assert_eq!(format_args!("").as_str(), Some("")); - /// assert_eq!(format_args!("{}", 1).as_str(), None); + /// assert_eq!(format_args!("{:?}", std::env::current_dir()).as_str(), None); /// ``` #[stable(feature = "fmt_as_str", since = "1.52.0")] #[rustc_const_unstable(feature = "const_arguments_as_str", issue = "103900")] @@ -1355,11 +1372,11 @@ impl<'a> Formatter<'a> { /// } /// } /// - /// assert_eq!(&format!("{}", Foo::new(2)), "2"); - /// assert_eq!(&format!("{}", Foo::new(-1)), "-1"); - /// assert_eq!(&format!("{}", Foo::new(0)), "0"); - /// assert_eq!(&format!("{:#}", Foo::new(-1)), "-Foo 1"); - /// assert_eq!(&format!("{:0>#8}", Foo::new(-1)), "00-Foo 1"); + /// assert_eq!(format!("{}", Foo::new(2)), "2"); + /// assert_eq!(format!("{}", Foo::new(-1)), "-1"); + /// assert_eq!(format!("{}", Foo::new(0)), "0"); + /// assert_eq!(format!("{:#}", Foo::new(-1)), "-Foo 1"); + /// assert_eq!(format!("{:0>#8}", Foo::new(-1)), "00-Foo 1"); /// ``` #[stable(feature = "rust1", since = "1.0.0")] pub fn pad_integral(&mut self, is_nonnegative: bool, prefix: &str, buf: &str) -> Result { @@ -1452,8 +1469,8 @@ impl<'a> Formatter<'a> { /// } /// } /// - /// assert_eq!(&format!("{Foo:<4}"), "Foo "); - /// assert_eq!(&format!("{Foo:0>4}"), "0Foo"); + /// assert_eq!(format!("{Foo:<4}"), "Foo "); + /// assert_eq!(format!("{Foo:0>4}"), "0Foo"); /// ``` #[stable(feature = "rust1", since = "1.0.0")] pub fn pad(&mut self, s: &str) -> Result { @@ -1636,8 +1653,8 @@ impl<'a> Formatter<'a> { /// } /// } /// - /// assert_eq!(&format!("{Foo}"), "Foo"); - /// assert_eq!(&format!("{Foo:0>8}"), "Foo"); + /// assert_eq!(format!("{Foo}"), "Foo"); + /// assert_eq!(format!("{Foo:0>8}"), "Foo"); /// ``` #[stable(feature = "rust1", since = "1.0.0")] pub fn write_str(&mut self, data: &str) -> Result { @@ -1659,8 +1676,8 @@ impl<'a> Formatter<'a> { /// } /// } /// - /// assert_eq!(&format!("{}", Foo(-1)), "Foo -1"); - /// assert_eq!(&format!("{:0>8}", Foo(2)), "Foo 2"); + /// assert_eq!(format!("{}", Foo(-1)), "Foo -1"); + /// assert_eq!(format!("{:0>8}", Foo(2)), "Foo 2"); /// ``` #[stable(feature = "rust1", since = "1.0.0")] pub fn write_fmt(&mut self, fmt: Arguments<'_>) -> Result { @@ -1703,8 +1720,8 @@ impl<'a> Formatter<'a> { /// } /// /// // We set alignment to the right with ">". - /// assert_eq!(&format!("{Foo:G>3}"), "GGG"); - /// assert_eq!(&format!("{Foo:t>6}"), "tttttt"); + /// assert_eq!(format!("{Foo:G>3}"), "GGG"); + /// assert_eq!(format!("{Foo:t>6}"), "tttttt"); /// ``` #[must_use] #[stable(feature = "fmt_flags", since = "1.5.0")] @@ -1738,10 +1755,10 @@ impl<'a> Formatter<'a> { /// } /// } /// - /// assert_eq!(&format!("{Foo:<}"), "left"); - /// assert_eq!(&format!("{Foo:>}"), "right"); - /// assert_eq!(&format!("{Foo:^}"), "center"); - /// assert_eq!(&format!("{Foo}"), "into the void"); + /// assert_eq!(format!("{Foo:<}"), "left"); + /// assert_eq!(format!("{Foo:>}"), "right"); + /// assert_eq!(format!("{Foo:^}"), "center"); + /// assert_eq!(format!("{Foo}"), "into the void"); /// ``` #[must_use] #[stable(feature = "fmt_flags_align", since = "1.28.0")] @@ -1767,7 +1784,7 @@ impl<'a> Formatter<'a> { /// fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result { /// if let Some(width) = formatter.width() { /// // If we received a width, we use it - /// write!(formatter, "{:width$}", &format!("Foo({})", self.0), width = width) + /// write!(formatter, "{:width$}", format!("Foo({})", self.0), width = width) /// } else { /// // Otherwise we do nothing special /// write!(formatter, "Foo({})", self.0) @@ -1775,8 +1792,8 @@ impl<'a> Formatter<'a> { /// } /// } /// - /// assert_eq!(&format!("{:10}", Foo(23)), "Foo(23) "); - /// assert_eq!(&format!("{}", Foo(23)), "Foo(23)"); + /// assert_eq!(format!("{:10}", Foo(23)), "Foo(23) "); + /// assert_eq!(format!("{}", Foo(23)), "Foo(23)"); /// ``` #[must_use] #[stable(feature = "fmt_flags", since = "1.5.0")] @@ -1806,8 +1823,8 @@ impl<'a> Formatter<'a> { /// } /// } /// - /// assert_eq!(&format!("{:.4}", Foo(23.2)), "Foo(23.2000)"); - /// assert_eq!(&format!("{}", Foo(23.2)), "Foo(23.20)"); + /// assert_eq!(format!("{:.4}", Foo(23.2)), "Foo(23.2000)"); + /// assert_eq!(format!("{}", Foo(23.2)), "Foo(23.20)"); /// ``` #[must_use] #[stable(feature = "fmt_flags", since = "1.5.0")] @@ -1837,9 +1854,9 @@ impl<'a> Formatter<'a> { /// } /// } /// - /// assert_eq!(&format!("{:+}", Foo(23)), "Foo(+23)"); - /// assert_eq!(&format!("{:+}", Foo(-23)), "Foo(-23)"); - /// assert_eq!(&format!("{}", Foo(23)), "Foo(23)"); + /// assert_eq!(format!("{:+}", Foo(23)), "Foo(+23)"); + /// assert_eq!(format!("{:+}", Foo(-23)), "Foo(-23)"); + /// assert_eq!(format!("{}", Foo(23)), "Foo(23)"); /// ``` #[must_use] #[stable(feature = "fmt_flags", since = "1.5.0")] @@ -1867,8 +1884,8 @@ impl<'a> Formatter<'a> { /// } /// } /// - /// assert_eq!(&format!("{:-}", Foo(23)), "-Foo(23)"); - /// assert_eq!(&format!("{}", Foo(23)), "Foo(23)"); + /// assert_eq!(format!("{:-}", Foo(23)), "-Foo(23)"); + /// assert_eq!(format!("{}", Foo(23)), "Foo(23)"); /// ``` #[must_use] #[stable(feature = "fmt_flags", since = "1.5.0")] @@ -1895,8 +1912,8 @@ impl<'a> Formatter<'a> { /// } /// } /// - /// assert_eq!(&format!("{:#}", Foo(23)), "Foo(23)"); - /// assert_eq!(&format!("{}", Foo(23)), "23"); + /// assert_eq!(format!("{:#}", Foo(23)), "Foo(23)"); + /// assert_eq!(format!("{}", Foo(23)), "23"); /// ``` #[must_use] #[stable(feature = "fmt_flags", since = "1.5.0")] @@ -1922,7 +1939,7 @@ impl<'a> Formatter<'a> { /// } /// } /// - /// assert_eq!(&format!("{:04}", Foo(23)), "23"); + /// assert_eq!(format!("{:04}", Foo(23)), "23"); /// ``` #[must_use] #[stable(feature = "fmt_flags", since = "1.5.0")] diff --git a/library/core/src/hint.rs b/library/core/src/hint.rs index e8d724ab1ef..5a76e866923 100644 --- a/library/core/src/hint.rs +++ b/library/core/src/hint.rs @@ -219,6 +219,75 @@ pub fn spin_loop() { /// backend used. Programs cannot rely on `black_box` for *correctness* in any way. /// /// [`std::convert::identity`]: crate::convert::identity +/// +/// # When is this useful? +/// +/// First and foremost: `black_box` does _not_ guarantee any exact behavior and, in some cases, may +/// do nothing at all. As such, it **must not be relied upon to control critical program behavior.** +/// This _immediately_ precludes any direct use of this function for cryptographic or security +/// purposes. +/// +/// While not suitable in those mission-critical cases, `back_box`'s functionality can generally be +/// relied upon for benchmarking, and should be used there. It will try to ensure that the +/// compiler doesn't optimize away part of the intended test code based on context. For +/// example: +/// +/// ``` +/// fn contains(haystack: &[&str], needle: &str) -> bool { +/// haystack.iter().any(|x| x == &needle) +/// } +/// +/// pub fn benchmark() { +/// let haystack = vec!["abc", "def", "ghi", "jkl", "mno"]; +/// let needle = "ghi"; +/// for _ in 0..10 { +/// contains(&haystack, needle); +/// } +/// } +/// ``` +/// +/// The compiler could theoretically make optimizations like the following: +/// +/// - `needle` and `haystack` are always the same, move the call to `contains` outside the loop and +/// delete the loop +/// - Inline `contains` +/// - `needle` and `haystack` have values known at compile time, `contains` is always true. Remove +/// the call and replace with `true` +/// - Nothing is done with the result of `contains`: delete this function call entirely +/// - `benchmark` now has no purpose: delete this function +/// +/// It is not likely that all of the above happens, but the compiler is definitely able to make some +/// optimizations that could result in a very inaccurate benchmark. This is where `black_box` comes +/// in: +/// +/// ``` +/// use std::hint::black_box; +/// +/// // Same `contains` function +/// fn contains(haystack: &[&str], needle: &str) -> bool { +/// haystack.iter().any(|x| x == &needle) +/// } +/// +/// pub fn benchmark() { +/// let haystack = vec!["abc", "def", "ghi", "jkl", "mno"]; +/// let needle = "ghi"; +/// for _ in 0..10 { +/// // Adjust our benchmark loop contents +/// black_box(contains(black_box(&haystack), black_box(needle))); +/// } +/// } +/// ``` +/// +/// This essentially tells the compiler to block optimizations across any calls to `black_box`. So, +/// it now: +/// +/// - Treats both arguments to `contains` as unpredictable: the body of `contains` can no longer be +/// optimized based on argument values +/// - Treats the call to `contains` and its result as volatile: the body of `benchmark` cannot +/// optimize this away +/// +/// This makes our benchmark much more realistic to how the function would be used in situ, where +/// arguments are usually not known at compile time and the result is used in some way. #[inline] #[stable(feature = "bench_black_box", since = "1.66.0")] #[rustc_const_unstable(feature = "const_black_box", issue = "none")] diff --git a/library/core/src/intrinsics/mir.rs b/library/core/src/intrinsics/mir.rs index 399d54f18c5..e3157b66902 100644 --- a/library/core/src/intrinsics/mir.rs +++ b/library/core/src/intrinsics/mir.rs @@ -259,6 +259,8 @@ define!("mir_unreachable", fn Unreachable() -> BasicBlock); define!("mir_drop", fn Drop<T>(place: T, goto: BasicBlock)); define!("mir_drop_and_replace", fn DropAndReplace<T>(place: T, value: T, goto: BasicBlock)); define!("mir_call", fn Call<T>(place: T, goto: BasicBlock, call: T)); +define!("mir_storage_live", fn StorageLive<T>(local: T)); +define!("mir_storage_dead", fn StorageDead<T>(local: T)); define!("mir_retag", fn Retag<T>(place: T)); define!("mir_move", fn Move<T>(place: T) -> T); define!("mir_static", fn Static<T>(s: T) -> &'static T); diff --git a/library/core/src/marker.rs b/library/core/src/marker.rs index 1326fc9ab09..74055602ec2 100644 --- a/library/core/src/marker.rs +++ b/library/core/src/marker.rs @@ -469,6 +469,62 @@ pub macro Copy($item:item) { #[cfg_attr(not(test), rustc_diagnostic_item = "Sync")] #[lang = "sync"] #[rustc_on_unimplemented( + on( + _Self = "std::cell::OnceCell<T>", + note = "if you want to do aliasing and mutation between multiple threads, use `std::sync::OnceLock` instead" + ), + on( + _Self = "std::cell::Cell<u8>", + note = "if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicU8` instead", + ), + on( + _Self = "std::cell::Cell<u16>", + note = "if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicU16` instead", + ), + on( + _Self = "std::cell::Cell<u32>", + note = "if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicU32` instead", + ), + on( + _Self = "std::cell::Cell<u64>", + note = "if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicU64` instead", + ), + on( + _Self = "std::cell::Cell<usize>", + note = "if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicUsize` instead", + ), + on( + _Self = "std::cell::Cell<i8>", + note = "if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicI8` instead", + ), + on( + _Self = "std::cell::Cell<i16>", + note = "if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicI16` instead", + ), + on( + _Self = "std::cell::Cell<i32>", + note = "if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicI32` instead", + ), + on( + _Self = "std::cell::Cell<i64>", + note = "if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicI64` instead", + ), + on( + _Self = "std::cell::Cell<isize>", + note = "if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicIsize` instead", + ), + on( + _Self = "std::cell::Cell<bool>", + note = "if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicBool` instead", + ), + on( + _Self = "std::cell::Cell<T>", + note = "if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock`", + ), + on( + _Self = "std::cell::RefCell<T>", + note = "if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead", + ), message = "`{Self}` cannot be shared between threads safely", label = "`{Self}` cannot be shared between threads safely" )] diff --git a/library/core/src/ptr/const_ptr.rs b/library/core/src/ptr/const_ptr.rs index 7b1cb5488bc..16eb726f6f6 100644 --- a/library/core/src/ptr/const_ptr.rs +++ b/library/core/src/ptr/const_ptr.rs @@ -731,7 +731,7 @@ impl<T: ?Sized> *const T { /// This computes the same value that [`offset_from`](#method.offset_from) /// would compute, but with the added precondition that the offset is /// guaranteed to be non-negative. This method is equivalent to - /// `usize::from(self.offset_from(origin)).unwrap_unchecked()`, + /// `usize::try_from(self.offset_from(origin)).unwrap_unchecked()`, /// but it provides slightly more information to the optimizer, which can /// sometimes allow it to optimize slightly better with some backends. /// diff --git a/library/core/src/ptr/mut_ptr.rs b/library/core/src/ptr/mut_ptr.rs index ed1e3bd4812..0a2f63e3ec6 100644 --- a/library/core/src/ptr/mut_ptr.rs +++ b/library/core/src/ptr/mut_ptr.rs @@ -904,7 +904,7 @@ impl<T: ?Sized> *mut T { /// This computes the same value that [`offset_from`](#method.offset_from) /// would compute, but with the added precondition that the offset is /// guaranteed to be non-negative. This method is equivalent to - /// `usize::from(self.offset_from(origin)).unwrap_unchecked()`, + /// `usize::try_from(self.offset_from(origin)).unwrap_unchecked()`, /// but it provides slightly more information to the optimizer, which can /// sometimes allow it to optimize slightly better with some backends. /// diff --git a/library/core/src/slice/mod.rs b/library/core/src/slice/mod.rs index c32caa14459..d93a3a57ecd 100644 --- a/library/core/src/slice/mod.rs +++ b/library/core/src/slice/mod.rs @@ -29,13 +29,19 @@ use crate::slice; /// Pure rust memchr implementation, taken from rust-memchr pub mod memchr; +#[unstable( + feature = "slice_internals", + issue = "none", + reason = "exposed from core to be reused in std;" +)] +pub mod sort; + mod ascii; mod cmp; mod index; mod iter; mod raw; mod rotate; -mod sort; mod specialize; #[stable(feature = "rust1", since = "1.0.0")] diff --git a/library/core/src/slice/sort.rs b/library/core/src/slice/sort.rs index 3ac01d17275..2181f9a8118 100644 --- a/library/core/src/slice/sort.rs +++ b/library/core/src/slice/sort.rs @@ -5,6 +5,9 @@ //! //! Unstable sorting is compatible with core because it doesn't allocate memory, unlike our //! stable sorting implementation. +//! +//! In addition it also contains the core logic of the stable sort used by `slice::sort` based on +//! TimSort. use crate::cmp; use crate::mem::{self, MaybeUninit, SizedTypeProperties}; @@ -905,6 +908,7 @@ fn partition_at_index_loop<'a, T, F>( } } +/// Reorder the slice such that the element at `index` is at its final sorted position. pub fn partition_at_index<T, F>( v: &mut [T], index: usize, @@ -949,3 +953,513 @@ where let pivot = &mut pivot[0]; (left, pivot, right) } + +/// Inserts `v[0]` into pre-sorted sequence `v[1..]` so that whole `v[..]` becomes sorted. +/// +/// This is the integral subroutine of insertion sort. +fn insert_head<T, F>(v: &mut [T], is_less: &mut F) +where + F: FnMut(&T, &T) -> bool, +{ + if v.len() >= 2 && is_less(&v[1], &v[0]) { + // SAFETY: Copy tmp back even if panic, and ensure unique observation. + unsafe { + // There are three ways to implement insertion here: + // + // 1. Swap adjacent elements until the first one gets to its final destination. + // However, this way we copy data around more than is necessary. If elements are big + // structures (costly to copy), this method will be slow. + // + // 2. Iterate until the right place for the first element is found. Then shift the + // elements succeeding it to make room for it and finally place it into the + // remaining hole. This is a good method. + // + // 3. Copy the first element into a temporary variable. Iterate until the right place + // for it is found. As we go along, copy every traversed element into the slot + // preceding it. Finally, copy data from the temporary variable into the remaining + // hole. This method is very good. Benchmarks demonstrated slightly better + // performance than with the 2nd method. + // + // All methods were benchmarked, and the 3rd showed best results. So we chose that one. + let tmp = mem::ManuallyDrop::new(ptr::read(&v[0])); + + // Intermediate state of the insertion process is always tracked by `hole`, which + // serves two purposes: + // 1. Protects integrity of `v` from panics in `is_less`. + // 2. Fills the remaining hole in `v` in the end. + // + // Panic safety: + // + // If `is_less` panics at any point during the process, `hole` will get dropped and + // fill the hole in `v` with `tmp`, thus ensuring that `v` still holds every object it + // initially held exactly once. + let mut hole = InsertionHole { src: &*tmp, dest: &mut v[1] }; + ptr::copy_nonoverlapping(&v[1], &mut v[0], 1); + + for i in 2..v.len() { + if !is_less(&v[i], &*tmp) { + break; + } + ptr::copy_nonoverlapping(&v[i], &mut v[i - 1], 1); + hole.dest = &mut v[i]; + } + // `hole` gets dropped and thus copies `tmp` into the remaining hole in `v`. + } + } + + // When dropped, copies from `src` into `dest`. + struct InsertionHole<T> { + src: *const T, + dest: *mut T, + } + + impl<T> Drop for InsertionHole<T> { + fn drop(&mut self) { + // SAFETY: The caller must ensure that src and dest are correctly set. + unsafe { + ptr::copy_nonoverlapping(self.src, self.dest, 1); + } + } + } +} + +/// Merges non-decreasing runs `v[..mid]` and `v[mid..]` using `buf` as temporary storage, and +/// stores the result into `v[..]`. +/// +/// # Safety +/// +/// The two slices must be non-empty and `mid` must be in bounds. Buffer `buf` must be long enough +/// to hold a copy of the shorter slice. Also, `T` must not be a zero-sized type. +unsafe fn merge<T, F>(v: &mut [T], mid: usize, buf: *mut T, is_less: &mut F) +where + F: FnMut(&T, &T) -> bool, +{ + let len = v.len(); + let v = v.as_mut_ptr(); + + // SAFETY: mid and len must be in-bounds of v. + let (v_mid, v_end) = unsafe { (v.add(mid), v.add(len)) }; + + // The merge process first copies the shorter run into `buf`. Then it traces the newly copied + // run and the longer run forwards (or backwards), comparing their next unconsumed elements and + // copying the lesser (or greater) one into `v`. + // + // As soon as the shorter run is fully consumed, the process is done. If the longer run gets + // consumed first, then we must copy whatever is left of the shorter run into the remaining + // hole in `v`. + // + // Intermediate state of the process is always tracked by `hole`, which serves two purposes: + // 1. Protects integrity of `v` from panics in `is_less`. + // 2. Fills the remaining hole in `v` if the longer run gets consumed first. + // + // Panic safety: + // + // If `is_less` panics at any point during the process, `hole` will get dropped and fill the + // hole in `v` with the unconsumed range in `buf`, thus ensuring that `v` still holds every + // object it initially held exactly once. + let mut hole; + + if mid <= len - mid { + // The left run is shorter. + + // SAFETY: buf must have enough capacity for `v[..mid]`. + unsafe { + ptr::copy_nonoverlapping(v, buf, mid); + hole = MergeHole { start: buf, end: buf.add(mid), dest: v }; + } + + // Initially, these pointers point to the beginnings of their arrays. + let left = &mut hole.start; + let mut right = v_mid; + let out = &mut hole.dest; + + while *left < hole.end && right < v_end { + // Consume the lesser side. + // If equal, prefer the left run to maintain stability. + + // SAFETY: left and right must be valid and part of v same for out. + unsafe { + let to_copy = if is_less(&*right, &**left) { + get_and_increment(&mut right) + } else { + get_and_increment(left) + }; + ptr::copy_nonoverlapping(to_copy, get_and_increment(out), 1); + } + } + } else { + // The right run is shorter. + + // SAFETY: buf must have enough capacity for `v[mid..]`. + unsafe { + ptr::copy_nonoverlapping(v_mid, buf, len - mid); + hole = MergeHole { start: buf, end: buf.add(len - mid), dest: v_mid }; + } + + // Initially, these pointers point past the ends of their arrays. + let left = &mut hole.dest; + let right = &mut hole.end; + let mut out = v_end; + + while v < *left && buf < *right { + // Consume the greater side. + // If equal, prefer the right run to maintain stability. + + // SAFETY: left and right must be valid and part of v same for out. + unsafe { + let to_copy = if is_less(&*right.sub(1), &*left.sub(1)) { + decrement_and_get(left) + } else { + decrement_and_get(right) + }; + ptr::copy_nonoverlapping(to_copy, decrement_and_get(&mut out), 1); + } + } + } + // Finally, `hole` gets dropped. If the shorter run was not fully consumed, whatever remains of + // it will now be copied into the hole in `v`. + + unsafe fn get_and_increment<T>(ptr: &mut *mut T) -> *mut T { + let old = *ptr; + + // SAFETY: ptr.add(1) must still be a valid pointer and part of `v`. + *ptr = unsafe { ptr.add(1) }; + old + } + + unsafe fn decrement_and_get<T>(ptr: &mut *mut T) -> *mut T { + // SAFETY: ptr.sub(1) must still be a valid pointer and part of `v`. + *ptr = unsafe { ptr.sub(1) }; + *ptr + } + + // When dropped, copies the range `start..end` into `dest..`. + struct MergeHole<T> { + start: *mut T, + end: *mut T, + dest: *mut T, + } + + impl<T> Drop for MergeHole<T> { + fn drop(&mut self) { + // SAFETY: `T` is not a zero-sized type, and these are pointers into a slice's elements. + unsafe { + let len = self.end.sub_ptr(self.start); + ptr::copy_nonoverlapping(self.start, self.dest, len); + } + } + } +} + +/// This merge sort borrows some (but not all) ideas from TimSort, which used to be described in +/// detail [here](https://github.com/python/cpython/blob/main/Objects/listsort.txt). However Python +/// has switched to a Powersort based implementation. +/// +/// The algorithm identifies strictly descending and non-descending subsequences, which are called +/// natural runs. There is a stack of pending runs yet to be merged. Each newly found run is pushed +/// onto the stack, and then some pairs of adjacent runs are merged until these two invariants are +/// satisfied: +/// +/// 1. for every `i` in `1..runs.len()`: `runs[i - 1].len > runs[i].len` +/// 2. for every `i` in `2..runs.len()`: `runs[i - 2].len > runs[i - 1].len + runs[i].len` +/// +/// The invariants ensure that the total running time is *O*(*n* \* log(*n*)) worst-case. +pub fn merge_sort<T, CmpF, ElemAllocF, ElemDeallocF, RunAllocF, RunDeallocF>( + v: &mut [T], + is_less: &mut CmpF, + elem_alloc_fn: ElemAllocF, + elem_dealloc_fn: ElemDeallocF, + run_alloc_fn: RunAllocF, + run_dealloc_fn: RunDeallocF, +) where + CmpF: FnMut(&T, &T) -> bool, + ElemAllocF: Fn(usize) -> *mut T, + ElemDeallocF: Fn(*mut T, usize), + RunAllocF: Fn(usize) -> *mut TimSortRun, + RunDeallocF: Fn(*mut TimSortRun, usize), +{ + // Slices of up to this length get sorted using insertion sort. + const MAX_INSERTION: usize = 20; + // Very short runs are extended using insertion sort to span at least this many elements. + const MIN_RUN: usize = 10; + + // The caller should have already checked that. + debug_assert!(!T::IS_ZST); + + let len = v.len(); + + // Short arrays get sorted in-place via insertion sort to avoid allocations. + if len <= MAX_INSERTION { + if len >= 2 { + for i in (0..len - 1).rev() { + insert_head(&mut v[i..], is_less); + } + } + return; + } + + // Allocate a buffer to use as scratch memory. We keep the length 0 so we can keep in it + // shallow copies of the contents of `v` without risking the dtors running on copies if + // `is_less` panics. When merging two sorted runs, this buffer holds a copy of the shorter run, + // which will always have length at most `len / 2`. + let buf = BufGuard::new(len / 2, elem_alloc_fn, elem_dealloc_fn); + let buf_ptr = buf.buf_ptr; + + let mut runs = RunVec::new(run_alloc_fn, run_dealloc_fn); + + // In order to identify natural runs in `v`, we traverse it backwards. That might seem like a + // strange decision, but consider the fact that merges more often go in the opposite direction + // (forwards). According to benchmarks, merging forwards is slightly faster than merging + // backwards. To conclude, identifying runs by traversing backwards improves performance. + let mut end = len; + while end > 0 { + // Find the next natural run, and reverse it if it's strictly descending. + let mut start = end - 1; + if start > 0 { + start -= 1; + + // SAFETY: The v.get_unchecked must be fed with correct inbound indicies. + unsafe { + if is_less(v.get_unchecked(start + 1), v.get_unchecked(start)) { + while start > 0 && is_less(v.get_unchecked(start), v.get_unchecked(start - 1)) { + start -= 1; + } + v[start..end].reverse(); + } else { + while start > 0 && !is_less(v.get_unchecked(start), v.get_unchecked(start - 1)) + { + start -= 1; + } + } + } + } + + // Insert some more elements into the run if it's too short. Insertion sort is faster than + // merge sort on short sequences, so this significantly improves performance. + while start > 0 && end - start < MIN_RUN { + start -= 1; + insert_head(&mut v[start..end], is_less); + } + + // Push this run onto the stack. + runs.push(TimSortRun { start, len: end - start }); + end = start; + + // Merge some pairs of adjacent runs to satisfy the invariants. + while let Some(r) = collapse(runs.as_slice()) { + let left = runs[r + 1]; + let right = runs[r]; + // SAFETY: `buf_ptr` must hold enough capacity for the shorter of the two sides, and + // neither side may be on length 0. + unsafe { + merge(&mut v[left.start..right.start + right.len], left.len, buf_ptr, is_less); + } + runs[r] = TimSortRun { start: left.start, len: left.len + right.len }; + runs.remove(r + 1); + } + } + + // Finally, exactly one run must remain in the stack. + debug_assert!(runs.len() == 1 && runs[0].start == 0 && runs[0].len == len); + + // Examines the stack of runs and identifies the next pair of runs to merge. More specifically, + // if `Some(r)` is returned, that means `runs[r]` and `runs[r + 1]` must be merged next. If the + // algorithm should continue building a new run instead, `None` is returned. + // + // TimSort is infamous for its buggy implementations, as described here: + // http://envisage-project.eu/timsort-specification-and-verification/ + // + // The gist of the story is: we must enforce the invariants on the top four runs on the stack. + // Enforcing them on just top three is not sufficient to ensure that the invariants will still + // hold for *all* runs in the stack. + // + // This function correctly checks invariants for the top four runs. Additionally, if the top + // run starts at index 0, it will always demand a merge operation until the stack is fully + // collapsed, in order to complete the sort. + #[inline] + fn collapse(runs: &[TimSortRun]) -> Option<usize> { + let n = runs.len(); + if n >= 2 + && (runs[n - 1].start == 0 + || runs[n - 2].len <= runs[n - 1].len + || (n >= 3 && runs[n - 3].len <= runs[n - 2].len + runs[n - 1].len) + || (n >= 4 && runs[n - 4].len <= runs[n - 3].len + runs[n - 2].len)) + { + if n >= 3 && runs[n - 3].len < runs[n - 1].len { Some(n - 3) } else { Some(n - 2) } + } else { + None + } + } + + // Extremely basic versions of Vec. + // Their use is super limited and by having the code here, it allows reuse between the sort + // implementations. + struct BufGuard<T, ElemDeallocF> + where + ElemDeallocF: Fn(*mut T, usize), + { + buf_ptr: *mut T, + capacity: usize, + elem_dealloc_fn: ElemDeallocF, + } + + impl<T, ElemDeallocF> BufGuard<T, ElemDeallocF> + where + ElemDeallocF: Fn(*mut T, usize), + { + fn new<ElemAllocF>( + len: usize, + elem_alloc_fn: ElemAllocF, + elem_dealloc_fn: ElemDeallocF, + ) -> Self + where + ElemAllocF: Fn(usize) -> *mut T, + { + Self { buf_ptr: elem_alloc_fn(len), capacity: len, elem_dealloc_fn } + } + } + + impl<T, ElemDeallocF> Drop for BufGuard<T, ElemDeallocF> + where + ElemDeallocF: Fn(*mut T, usize), + { + fn drop(&mut self) { + (self.elem_dealloc_fn)(self.buf_ptr, self.capacity); + } + } + + struct RunVec<RunAllocF, RunDeallocF> + where + RunAllocF: Fn(usize) -> *mut TimSortRun, + RunDeallocF: Fn(*mut TimSortRun, usize), + { + buf_ptr: *mut TimSortRun, + capacity: usize, + len: usize, + run_alloc_fn: RunAllocF, + run_dealloc_fn: RunDeallocF, + } + + impl<RunAllocF, RunDeallocF> RunVec<RunAllocF, RunDeallocF> + where + RunAllocF: Fn(usize) -> *mut TimSortRun, + RunDeallocF: Fn(*mut TimSortRun, usize), + { + fn new(run_alloc_fn: RunAllocF, run_dealloc_fn: RunDeallocF) -> Self { + // Most slices can be sorted with at most 16 runs in-flight. + const START_RUN_CAPACITY: usize = 16; + + Self { + buf_ptr: run_alloc_fn(START_RUN_CAPACITY), + capacity: START_RUN_CAPACITY, + len: 0, + run_alloc_fn, + run_dealloc_fn, + } + } + + fn push(&mut self, val: TimSortRun) { + if self.len == self.capacity { + let old_capacity = self.capacity; + let old_buf_ptr = self.buf_ptr; + + self.capacity = self.capacity * 2; + self.buf_ptr = (self.run_alloc_fn)(self.capacity); + + // SAFETY: buf_ptr new and old were correctly allocated and old_buf_ptr has + // old_capacity valid elements. + unsafe { + ptr::copy_nonoverlapping(old_buf_ptr, self.buf_ptr, old_capacity); + } + + (self.run_dealloc_fn)(old_buf_ptr, old_capacity); + } + + // SAFETY: The invariant was just checked. + unsafe { + self.buf_ptr.add(self.len).write(val); + } + self.len += 1; + } + + fn remove(&mut self, index: usize) { + if index >= self.len { + panic!("Index out of bounds"); + } + + // SAFETY: buf_ptr needs to be valid and len invariant upheld. + unsafe { + // the place we are taking from. + let ptr = self.buf_ptr.add(index); + + // Shift everything down to fill in that spot. + ptr::copy(ptr.add(1), ptr, self.len - index - 1); + } + self.len -= 1; + } + + fn as_slice(&self) -> &[TimSortRun] { + // SAFETY: Safe as long as buf_ptr is valid and len invariant was upheld. + unsafe { &*ptr::slice_from_raw_parts(self.buf_ptr, self.len) } + } + + fn len(&self) -> usize { + self.len + } + } + + impl<RunAllocF, RunDeallocF> core::ops::Index<usize> for RunVec<RunAllocF, RunDeallocF> + where + RunAllocF: Fn(usize) -> *mut TimSortRun, + RunDeallocF: Fn(*mut TimSortRun, usize), + { + type Output = TimSortRun; + + fn index(&self, index: usize) -> &Self::Output { + if index < self.len { + // SAFETY: buf_ptr and len invariant must be upheld. + unsafe { + return &*(self.buf_ptr.add(index)); + } + } + + panic!("Index out of bounds"); + } + } + + impl<RunAllocF, RunDeallocF> core::ops::IndexMut<usize> for RunVec<RunAllocF, RunDeallocF> + where + RunAllocF: Fn(usize) -> *mut TimSortRun, + RunDeallocF: Fn(*mut TimSortRun, usize), + { + fn index_mut(&mut self, index: usize) -> &mut Self::Output { + if index < self.len { + // SAFETY: buf_ptr and len invariant must be upheld. + unsafe { + return &mut *(self.buf_ptr.add(index)); + } + } + + panic!("Index out of bounds"); + } + } + + impl<RunAllocF, RunDeallocF> Drop for RunVec<RunAllocF, RunDeallocF> + where + RunAllocF: Fn(usize) -> *mut TimSortRun, + RunDeallocF: Fn(*mut TimSortRun, usize), + { + fn drop(&mut self) { + // As long as TimSortRun is Copy we don't need to drop them individually but just the + // whole allocation. + (self.run_dealloc_fn)(self.buf_ptr, self.capacity); + } + } +} + +/// Internal type used by merge_sort. +#[derive(Clone, Copy, Debug)] +pub struct TimSortRun { + len: usize, + start: usize, +} diff --git a/library/core/tests/num/dec2flt/mod.rs b/library/core/tests/num/dec2flt/mod.rs index c4e105cba60..a2b9bb551e6 100644 --- a/library/core/tests/num/dec2flt/mod.rs +++ b/library/core/tests/num/dec2flt/mod.rs @@ -15,7 +15,7 @@ macro_rules! test_literal { for input in inputs { assert_eq!(input.parse(), Ok(x64)); assert_eq!(input.parse(), Ok(x32)); - let neg_input = &format!("-{input}"); + let neg_input = format!("-{input}"); assert_eq!(neg_input.parse(), Ok(-x64)); assert_eq!(neg_input.parse(), Ok(-x32)); } diff --git a/library/portable-simd/crates/core_simd/examples/spectral_norm.rs b/library/portable-simd/crates/core_simd/examples/spectral_norm.rs index 012182e090b..d576bd0ccee 100644 --- a/library/portable-simd/crates/core_simd/examples/spectral_norm.rs +++ b/library/portable-simd/crates/core_simd/examples/spectral_norm.rs @@ -69,7 +69,7 @@ fn dot(x: &[f64], y: &[f64]) -> f64 { #[cfg(test)] #[test] fn test() { - assert_eq!(&format!("{:.9}", spectral_norm(100)), "1.274219991"); + assert_eq!(format!("{:.9}", spectral_norm(100)), "1.274219991"); } fn main() { diff --git a/library/proc_macro/src/lib.rs b/library/proc_macro/src/lib.rs index f0e4f5d8a80..8bff40c279a 100644 --- a/library/proc_macro/src/lib.rs +++ b/library/proc_macro/src/lib.rs @@ -74,6 +74,7 @@ pub fn is_available() -> bool { /// /// This is both the input and output of `#[proc_macro]`, `#[proc_macro_attribute]` /// and `#[proc_macro_derive]` definitions. +#[rustc_diagnostic_item = "TokenStream"] #[stable(feature = "proc_macro_lib", since = "1.15.0")] #[derive(Clone)] pub struct TokenStream(Option<bridge::client::TokenStream>); diff --git a/library/std/src/io/error/tests.rs b/library/std/src/io/error/tests.rs index 16c634e9afd..9aea62a5b94 100644 --- a/library/std/src/io/error/tests.rs +++ b/library/std/src/io/error/tests.rs @@ -190,5 +190,5 @@ fn test_std_io_error_downcast() { let io_error = io_error.downcast::<E>().unwrap_err(); assert_eq!(SIMPLE_MESSAGE.kind, io_error.kind()); - assert_eq!(SIMPLE_MESSAGE.message, &*format!("{io_error}")); + assert_eq!(SIMPLE_MESSAGE.message, format!("{io_error}")); } diff --git a/library/std/src/lib.rs b/library/std/src/lib.rs index a7e13f5b866..99cc0186310 100644 --- a/library/std/src/lib.rs +++ b/library/std/src/lib.rs @@ -238,7 +238,6 @@ #![feature(allocator_internals)] #![feature(allow_internal_unsafe)] #![feature(allow_internal_unstable)] -#![feature(box_syntax)] #![feature(c_unwind)] #![feature(cfg_target_thread_local)] #![feature(concat_idents)] diff --git a/library/std/src/net/ip_addr/tests.rs b/library/std/src/net/ip_addr/tests.rs index 7c3430b2b21..0eb59d45de7 100644 --- a/library/std/src/net/ip_addr/tests.rs +++ b/library/std/src/net/ip_addr/tests.rs @@ -125,8 +125,8 @@ fn ipv4_addr_to_string() { assert_eq!(Ipv4Addr::new(127, 127, 127, 127).to_string(), "127.127.127.127"); // Test padding - assert_eq!(&format!("{:16}", Ipv4Addr::new(1, 1, 1, 1)), "1.1.1.1 "); - assert_eq!(&format!("{:>16}", Ipv4Addr::new(1, 1, 1, 1)), " 1.1.1.1"); + assert_eq!(format!("{:16}", Ipv4Addr::new(1, 1, 1, 1)), "1.1.1.1 "); + assert_eq!(format!("{:>16}", Ipv4Addr::new(1, 1, 1, 1)), " 1.1.1.1"); } #[test] @@ -148,8 +148,8 @@ fn ipv6_addr_to_string() { "1111:2222:3333:4444:5555:6666:7777:8888" ); // padding - assert_eq!(&format!("{:20}", Ipv6Addr::new(1, 2, 3, 4, 5, 6, 7, 8)), "1:2:3:4:5:6:7:8 "); - assert_eq!(&format!("{:>20}", Ipv6Addr::new(1, 2, 3, 4, 5, 6, 7, 8)), " 1:2:3:4:5:6:7:8"); + assert_eq!(format!("{:20}", Ipv6Addr::new(1, 2, 3, 4, 5, 6, 7, 8)), "1:2:3:4:5:6:7:8 "); + assert_eq!(format!("{:>20}", Ipv6Addr::new(1, 2, 3, 4, 5, 6, 7, 8)), " 1:2:3:4:5:6:7:8"); // reduce a single run of zeros assert_eq!( diff --git a/library/std/src/net/socket_addr/tests.rs b/library/std/src/net/socket_addr/tests.rs index 15211f81981..dfc6dabbed1 100644 --- a/library/std/src/net/socket_addr/tests.rs +++ b/library/std/src/net/socket_addr/tests.rs @@ -64,11 +64,11 @@ fn ipv4_socket_addr_to_string() { // Test padding. assert_eq!( - &format!("{:16}", SocketAddrV4::new(Ipv4Addr::new(1, 1, 1, 1), 53)), + format!("{:16}", SocketAddrV4::new(Ipv4Addr::new(1, 1, 1, 1), 53)), "1.1.1.1:53 " ); assert_eq!( - &format!("{:>16}", SocketAddrV4::new(Ipv4Addr::new(1, 1, 1, 1), 53)), + format!("{:>16}", SocketAddrV4::new(Ipv4Addr::new(1, 1, 1, 1), 53)), " 1.1.1.1:53" ); } @@ -111,11 +111,11 @@ fn ipv6_socket_addr_to_string() { // Test padding. assert_eq!( - &format!("{:22}", SocketAddrV6::new(Ipv6Addr::new(1, 2, 3, 4, 5, 6, 7, 8), 9, 0, 0)), + format!("{:22}", SocketAddrV6::new(Ipv6Addr::new(1, 2, 3, 4, 5, 6, 7, 8), 9, 0, 0)), "[1:2:3:4:5:6:7:8]:9 " ); assert_eq!( - &format!("{:>22}", SocketAddrV6::new(Ipv6Addr::new(1, 2, 3, 4, 5, 6, 7, 8), 9, 0, 0)), + format!("{:>22}", SocketAddrV6::new(Ipv6Addr::new(1, 2, 3, 4, 5, 6, 7, 8), 9, 0, 0)), " [1:2:3:4:5:6:7:8]:9" ); } diff --git a/library/std/src/path.rs b/library/std/src/path.rs index c3593264e52..2f53cf83936 100644 --- a/library/std/src/path.rs +++ b/library/std/src/path.rs @@ -2531,6 +2531,8 @@ impl Path { /// Creates an owned [`PathBuf`] with `path` adjoined to `self`. /// + /// If `path` is absolute, it replaces the current path. + /// /// See [`PathBuf::push`] for more details on what it means to adjoin a path. /// /// # Examples @@ -2539,6 +2541,7 @@ impl Path { /// use std::path::{Path, PathBuf}; /// /// assert_eq!(Path::new("/etc").join("passwd"), PathBuf::from("/etc/passwd")); + /// assert_eq!(Path::new("/etc").join("/bin/sh"), PathBuf::from("/bin/sh")); /// ``` #[stable(feature = "rust1", since = "1.0.0")] #[must_use] diff --git a/library/std/src/sys/hermit/thread.rs b/library/std/src/sys/hermit/thread.rs index 8f65544a9e8..2507f706951 100644 --- a/library/std/src/sys/hermit/thread.rs +++ b/library/std/src/sys/hermit/thread.rs @@ -27,10 +27,10 @@ impl Thread { p: Box<dyn FnOnce()>, core_id: isize, ) -> io::Result<Thread> { - let p = Box::into_raw(box p); + let p = Box::into_raw(Box::new(p)); let tid = abi::spawn2( thread_start, - p as usize, + p.expose_addr(), abi::Priority::into(abi::NORMAL_PRIO), stack, core_id, diff --git a/library/std/src/sys/hermit/thread_local_dtor.rs b/library/std/src/sys/hermit/thread_local_dtor.rs index 9b683fce157..613266b9530 100644 --- a/library/std/src/sys/hermit/thread_local_dtor.rs +++ b/library/std/src/sys/hermit/thread_local_dtor.rs @@ -5,32 +5,23 @@ // The this solution works like the implementation of macOS and // doesn't additional OS support -use crate::cell::Cell; -use crate::ptr; +use crate::mem; #[thread_local] -static DTORS: Cell<*mut List> = Cell::new(ptr::null_mut()); - -type List = Vec<(*mut u8, unsafe extern "C" fn(*mut u8))>; +static mut DTORS: Vec<(*mut u8, unsafe extern "C" fn(*mut u8))> = Vec::new(); pub unsafe fn register_dtor(t: *mut u8, dtor: unsafe extern "C" fn(*mut u8)) { - if DTORS.get().is_null() { - let v: Box<List> = box Vec::new(); - DTORS.set(Box::into_raw(v)); - } - - let list: &mut List = &mut *DTORS.get(); + let list = &mut DTORS; list.push((t, dtor)); } // every thread call this function to run through all possible destructors pub unsafe fn run_dtors() { - let mut ptr = DTORS.replace(ptr::null_mut()); - while !ptr.is_null() { - let list = Box::from_raw(ptr); - for (ptr, dtor) in list.into_iter() { + let mut list = mem::take(&mut DTORS); + while !list.is_empty() { + for (ptr, dtor) in list { dtor(ptr); } - ptr = DTORS.replace(ptr::null_mut()); + list = mem::take(&mut DTORS); } } diff --git a/library/std/src/sys/solid/thread_local_dtor.rs b/library/std/src/sys/solid/thread_local_dtor.rs index 97356457057..bad14bb37f7 100644 --- a/library/std/src/sys/solid/thread_local_dtor.rs +++ b/library/std/src/sys/solid/thread_local_dtor.rs @@ -5,43 +5,35 @@ use super::{abi, itron::task}; use crate::cell::Cell; -use crate::ptr; +use crate::mem; #[thread_local] -static DTORS: Cell<*mut List> = Cell::new(ptr::null_mut()); +static REGISTERED: Cell<bool> = Cell::new(false); -type List = Vec<(*mut u8, unsafe extern "C" fn(*mut u8))>; +#[thread_local] +static mut DTORS: Vec<(*mut u8, unsafe extern "C" fn(*mut u8))> = Vec::new(); pub unsafe fn register_dtor(t: *mut u8, dtor: unsafe extern "C" fn(*mut u8)) { - if DTORS.get().is_null() { + if !REGISTERED.get() { let tid = task::current_task_id_aborting(); - let v: Box<List> = box Vec::new(); - DTORS.set(Box::into_raw(v)); - // Register `tls_dtor` to make sure the TLS destructors are called // for tasks created by other means than `std::thread` unsafe { abi::SOLID_TLS_AddDestructor(tid as i32, tls_dtor) }; + REGISTERED.set(true); } - let list: &mut List = unsafe { &mut *DTORS.get() }; + let list = unsafe { &mut DTORS }; list.push((t, dtor)); } pub unsafe fn run_dtors() { - let ptr = DTORS.get(); - if !ptr.is_null() { - // Swap the destructor list, call all registered destructors, - // and repeat this until the list becomes permanently empty. - while let Some(list) = Some(crate::mem::replace(unsafe { &mut *ptr }, Vec::new())) - .filter(|list| !list.is_empty()) - { - for (ptr, dtor) in list.into_iter() { - unsafe { dtor(ptr) }; - } + let mut list = mem::take(unsafe { &mut DTORS }); + while !list.is_empty() { + for (ptr, dtor) in list { + unsafe { dtor(ptr) }; } - // Drop the destructor list - unsafe { Box::from_raw(DTORS.replace(ptr::null_mut())) }; + list = mem::take(unsafe { &mut DTORS }); } } diff --git a/library/std/src/sys/unix/process/process_unix.rs b/library/std/src/sys/unix/process/process_unix.rs index c2c4aa1c9df..3bc17b7754d 100644 --- a/library/std/src/sys/unix/process/process_unix.rs +++ b/library/std/src/sys/unix/process/process_unix.rs @@ -746,6 +746,8 @@ fn signal_string(signal: i32) -> &'static str { libc::SIGWINCH => " (SIGWINCH)", #[cfg(not(target_os = "haiku"))] libc::SIGIO => " (SIGIO)", + #[cfg(target_os = "haiku")] + libc::SIGPOLL => " (SIGPOLL)", libc::SIGSYS => " (SIGSYS)", // For information on Linux signals, run `man 7 signal` #[cfg(all( diff --git a/library/std/src/sys/unix/thread.rs b/library/std/src/sys/unix/thread.rs index 2a1830d060e..cc0e5929569 100644 --- a/library/std/src/sys/unix/thread.rs +++ b/library/std/src/sys/unix/thread.rs @@ -49,7 +49,7 @@ unsafe impl Sync for Thread {} impl Thread { // unsafe: see thread::Builder::spawn_unchecked for safety requirements pub unsafe fn new(stack: usize, p: Box<dyn FnOnce()>) -> io::Result<Thread> { - let p = Box::into_raw(box p); + let p = Box::into_raw(Box::new(p)); let mut native: libc::pthread_t = mem::zeroed(); let mut attr: libc::pthread_attr_t = mem::zeroed(); assert_eq!(libc::pthread_attr_init(&mut attr), 0); diff --git a/library/std/src/sys/unix/thread_local_dtor.rs b/library/std/src/sys/unix/thread_local_dtor.rs index d7fd2130f7c..c31fb3a48da 100644 --- a/library/std/src/sys/unix/thread_local_dtor.rs +++ b/library/std/src/sys/unix/thread_local_dtor.rs @@ -57,39 +57,34 @@ pub unsafe fn register_dtor(t: *mut u8, dtor: unsafe extern "C" fn(*mut u8)) { #[cfg(target_os = "macos")] pub unsafe fn register_dtor(t: *mut u8, dtor: unsafe extern "C" fn(*mut u8)) { use crate::cell::Cell; + use crate::mem; use crate::ptr; #[thread_local] static REGISTERED: Cell<bool> = Cell::new(false); + + #[thread_local] + static mut DTORS: Vec<(*mut u8, unsafe extern "C" fn(*mut u8))> = Vec::new(); + if !REGISTERED.get() { _tlv_atexit(run_dtors, ptr::null_mut()); REGISTERED.set(true); } - type List = Vec<(*mut u8, unsafe extern "C" fn(*mut u8))>; - - #[thread_local] - static DTORS: Cell<*mut List> = Cell::new(ptr::null_mut()); - if DTORS.get().is_null() { - let v: Box<List> = box Vec::new(); - DTORS.set(Box::into_raw(v)); - } - extern "C" { fn _tlv_atexit(dtor: unsafe extern "C" fn(*mut u8), arg: *mut u8); } - let list: &mut List = &mut *DTORS.get(); + let list = &mut DTORS; list.push((t, dtor)); unsafe extern "C" fn run_dtors(_: *mut u8) { - let mut ptr = DTORS.replace(ptr::null_mut()); - while !ptr.is_null() { - let list = Box::from_raw(ptr); - for (ptr, dtor) in list.into_iter() { + let mut list = mem::take(&mut DTORS); + while !list.is_empty() { + for (ptr, dtor) in list { dtor(ptr); } - ptr = DTORS.replace(ptr::null_mut()); + list = mem::take(&mut DTORS); } } } diff --git a/library/std/src/sys/windows/thread.rs b/library/std/src/sys/windows/thread.rs index 1cb576c9594..ed58c47e090 100644 --- a/library/std/src/sys/windows/thread.rs +++ b/library/std/src/sys/windows/thread.rs @@ -22,7 +22,7 @@ pub struct Thread { impl Thread { // unsafe: see thread::Builder::spawn_unchecked for safety requirements pub unsafe fn new(stack: usize, p: Box<dyn FnOnce()>) -> io::Result<Thread> { - let p = Box::into_raw(box p); + let p = Box::into_raw(Box::new(p)); // FIXME On UNIX, we guard against stack sizes that are too small but // that's because pthreads enforces that stacks are at least diff --git a/library/std/src/sys_common/thread_local_dtor.rs b/library/std/src/sys_common/thread_local_dtor.rs index 1d13a7171b0..844946eda03 100644 --- a/library/std/src/sys_common/thread_local_dtor.rs +++ b/library/std/src/sys_common/thread_local_dtor.rs @@ -30,7 +30,7 @@ pub unsafe fn register_dtor_fallback(t: *mut u8, dtor: unsafe extern "C" fn(*mut static DTORS: StaticKey = StaticKey::new(Some(run_dtors)); type List = Vec<(*mut u8, unsafe extern "C" fn(*mut u8))>; if DTORS.get().is_null() { - let v: Box<List> = box Vec::new(); + let v: Box<List> = Box::new(Vec::new()); DTORS.set(Box::into_raw(v) as *mut u8); } let list: &mut List = &mut *(DTORS.get() as *mut List); diff --git a/library/std/src/thread/local.rs b/library/std/src/thread/local.rs index b30bb7b77ef..cf7c2e05a2e 100644 --- a/library/std/src/thread/local.rs +++ b/library/std/src/thread/local.rs @@ -1110,8 +1110,7 @@ pub mod os { let ptr = if ptr.is_null() { // If the lookup returned null, we haven't initialized our own // local copy, so do that now. - let ptr: Box<Value<T>> = box Value { inner: LazyKeyInner::new(), key: self }; - let ptr = Box::into_raw(ptr); + let ptr = Box::into_raw(Box::new(Value { inner: LazyKeyInner::new(), key: self })); // SAFETY: At this point we are sure there is no value inside // ptr so setting it will not affect anyone else. unsafe { diff --git a/library/test/src/cli.rs b/library/test/src/cli.rs index 796796e07a9..9d22ebbee87 100644 --- a/library/test/src/cli.rs +++ b/library/test/src/cli.rs @@ -309,7 +309,8 @@ fn parse_opts_impl(matches: getopts::Matches) -> OptRes { // FIXME: Copied from librustc_ast until linkage errors are resolved. Issue #47566 fn is_nightly() -> bool { // Whether this is a feature-staged build, i.e., on the beta or stable channel - let disable_unstable_features = option_env!("CFG_DISABLE_UNSTABLE_FEATURES").is_some(); + let disable_unstable_features = + option_env!("CFG_DISABLE_UNSTABLE_FEATURES").map(|s| s != "0").unwrap_or(false); // Whether we should enable unstable features for bootstrapping let bootstrap = env::var("RUSTC_BOOTSTRAP").is_ok(); diff --git a/src/bootstrap/dist.rs b/src/bootstrap/dist.rs index 68215790bed..02e35d2436e 100644 --- a/src/bootstrap/dist.rs +++ b/src/bootstrap/dist.rs @@ -392,19 +392,29 @@ impl Step for Rustc { t!(fs::create_dir_all(image.join("bin"))); builder.cp_r(&src.join("bin"), &image.join("bin")); - builder.install(&builder.rustdoc(compiler), &image.join("bin"), 0o755); + if builder + .config + .tools + .as_ref() + .map_or(true, |tools| tools.iter().any(|tool| tool == "rustdoc")) + { + let rustdoc = builder.rustdoc(compiler); + builder.install(&rustdoc, &image.join("bin"), 0o755); + } - let ra_proc_macro_srv = builder - .ensure(tool::RustAnalyzerProcMacroSrv { + if let Some(ra_proc_macro_srv) = builder.ensure_if_default( + tool::RustAnalyzerProcMacroSrv { compiler: builder.compiler_for( compiler.stage, builder.config.build, compiler.host, ), target: compiler.host, - }) - .expect("rust-analyzer-proc-macro-server always builds"); - builder.install(&ra_proc_macro_srv, &image.join("libexec"), 0o755); + }, + builder.kind, + ) { + builder.install(&ra_proc_macro_srv, &image.join("libexec"), 0o755); + } let libdir_relative = builder.libdir_relative(compiler); @@ -952,7 +962,7 @@ impl Step for PlainSourceTarball { "Cargo.toml", "Cargo.lock", ]; - let src_dirs = ["src", "compiler", "library"]; + let src_dirs = ["src", "compiler", "library", "tests"]; copy_src_dirs(builder, &builder.src, &src_dirs, &[], &plain_dst_src); @@ -1130,12 +1140,6 @@ impl Step for RustAnalyzer { let compiler = self.compiler; let target = self.target; - if target.contains("riscv64") { - // riscv64 currently has an LLVM bug that makes rust-analyzer unable - // to build. See #74813 for details. - return None; - } - let rust_analyzer = builder .ensure(tool::RustAnalyzer { compiler, target }) .expect("rust-analyzer always builds"); diff --git a/src/bootstrap/native.rs b/src/bootstrap/native.rs index e0d1504c9c7..cb5706ca0a6 100644 --- a/src/bootstrap/native.rs +++ b/src/bootstrap/native.rs @@ -1105,6 +1105,12 @@ fn supported_sanitizers( "x86_64-unknown-linux-musl" => { common_libs("linux", "x86_64", &["asan", "lsan", "msan", "tsan"]) } + "s390x-unknown-linux-gnu" => { + common_libs("linux", "s390x", &["asan", "lsan", "msan", "tsan"]) + } + "s390x-unknown-linux-musl" => { + common_libs("linux", "s390x", &["asan", "lsan", "msan", "tsan"]) + } _ => Vec::new(), } } diff --git a/src/bootstrap/tool.rs b/src/bootstrap/tool.rs index 9a2100c2fb7..ca5f500f93b 100644 --- a/src/bootstrap/tool.rs +++ b/src/bootstrap/tool.rs @@ -765,9 +765,15 @@ impl Step for RustAnalyzerProcMacroSrv { const ONLY_HOSTS: bool = true; fn should_run(run: ShouldRun<'_>) -> ShouldRun<'_> { + let builder = run.builder; // Allow building `rust-analyzer-proc-macro-srv` both as part of the `rust-analyzer` and as a stand-alone tool. run.path("src/tools/rust-analyzer") .path("src/tools/rust-analyzer/crates/proc-macro-srv-cli") + .default_condition(builder.config.tools.as_ref().map_or(true, |tools| { + tools + .iter() + .any(|tool| tool == "rust-analyzer" || tool == "rust-analyzer-proc-macro-srv") + })) } fn make_run(run: RunConfig<'_>) { diff --git a/src/ci/docker/host-x86_64/dist-s390x-linux/Dockerfile b/src/ci/docker/host-x86_64/dist-s390x-linux/Dockerfile index 43a449b3a19..adb98d7ebb5 100644 --- a/src/ci/docker/host-x86_64/dist-s390x-linux/Dockerfile +++ b/src/ci/docker/host-x86_64/dist-s390x-linux/Dockerfile @@ -28,5 +28,5 @@ ENV \ ENV HOSTS=s390x-unknown-linux-gnu -ENV RUST_CONFIGURE_ARGS --enable-extended --enable-lld --enable-profiler --disable-docs +ENV RUST_CONFIGURE_ARGS --enable-extended --enable-lld --enable-sanitizers --enable-profiler --disable-docs ENV SCRIPT python3 ../x.py dist --host $HOSTS --target $HOSTS diff --git a/src/ci/docker/host-x86_64/mingw-check-tidy/Dockerfile b/src/ci/docker/host-x86_64/mingw-check-tidy/Dockerfile index dc0e591cad6..889a586b351 100644 --- a/src/ci/docker/host-x86_64/mingw-check-tidy/Dockerfile +++ b/src/ci/docker/host-x86_64/mingw-check-tidy/Dockerfile @@ -1,8 +1,6 @@ -FROM ubuntu:18.04 -# FIXME: when bumping the version, remove the Python 3.6-specific changes in -# the reuse-requirements.in file, regenerate reuse-requirements.txt and remove -# this comment. +FROM ubuntu:22.04 +ARG DEBIAN_FRONTEND=noninteractive RUN apt-get update && apt-get install -y --no-install-recommends \ g++ \ make \ diff --git a/src/ci/docker/host-x86_64/mingw-check/Dockerfile b/src/ci/docker/host-x86_64/mingw-check/Dockerfile index d5bc76eeb23..4cc5d9f8a0d 100644 --- a/src/ci/docker/host-x86_64/mingw-check/Dockerfile +++ b/src/ci/docker/host-x86_64/mingw-check/Dockerfile @@ -1,8 +1,6 @@ -FROM ubuntu:18.04 -# FIXME: when bumping the version, remove the Python 3.6-specific changes in -# the reuse-requirements.in file, regenerate reuse-requirements.txt and remove -# this comment. +FROM ubuntu:22.04 +ARG DEBIAN_FRONTEND=noninteractive RUN apt-get update && apt-get install -y --no-install-recommends \ g++ \ make \ diff --git a/src/ci/docker/host-x86_64/mingw-check/reuse-requirements.in b/src/ci/docker/host-x86_64/mingw-check/reuse-requirements.in index 4964f40aa39..c7b3376e2f1 100644 --- a/src/ci/docker/host-x86_64/mingw-check/reuse-requirements.in +++ b/src/ci/docker/host-x86_64/mingw-check/reuse-requirements.in @@ -12,11 +12,3 @@ # reuse - -# Some packages dropped support for Python 3.6, which is the version used in -# this builder (due to Ubuntu 18.04). This should be removed once we bump the -# Ubuntu version of the builder. -jinja2 < 3.1 -markupsafe < 2.1 -requests < 2.28 -setuptools < 59.7 diff --git a/src/ci/docker/host-x86_64/mingw-check/reuse-requirements.txt b/src/ci/docker/host-x86_64/mingw-check/reuse-requirements.txt index 10a5f738790..b0f598f77ea 100644 --- a/src/ci/docker/host-x86_64/mingw-check/reuse-requirements.txt +++ b/src/ci/docker/host-x86_64/mingw-check/reuse-requirements.txt @@ -1,6 +1,6 @@ # -# This file is autogenerated by pip-compile with python 3.10 -# To update, run: +# This file is autogenerated by pip-compile with Python 3.10 +# by the following command: # # pip-compile --allow-unsafe --generate-hashes reuse-requirements.in # @@ -8,138 +8,77 @@ binaryornot==0.4.4 \ --hash=sha256:359501dfc9d40632edc9fac890e19542db1a287bbcfa58175b66658392018061 \ --hash=sha256:b8b71173c917bddcd2c16070412e369c3ed7f0528926f70cac18a6c97fd563e4 # via reuse -boolean-py==3.8 \ - --hash=sha256:cc24e20f985d60cd4a3a5a1c0956dd12611159d32a75081dabd0c9ab981acaa4 \ - --hash=sha256:d75da0fd0354425fa64f6bbc6cec6ae1485d0eec3447b73187ff8cbf9b572e26 +boolean-py==4.0 \ + --hash=sha256:17b9a181630e43dde1851d42bef546d616d5d9b4480357514597e78b203d06e4 \ + --hash=sha256:2876f2051d7d6394a531d82dc6eb407faa0b01a0a0b3083817ccd7323b8d96bd # via # license-expression # reuse -certifi==2022.6.15 \ - --hash=sha256:84c85a9078b11105f04f3036a9482ae10e4621616db313fe045dd24743a0820d \ - --hash=sha256:fe86415d55e84719d75f8b69414f6438ac3547d2078ab91b67e779ef69378412 - # via requests -chardet==5.0.0 \ - --hash=sha256:0368df2bfd78b5fc20572bb4e9bb7fb53e2c094f60ae9993339e8671d0afb8aa \ - --hash=sha256:d3e64f022d254183001eccc5db4040520c0f23b1a3f33d6413e099eb7f126557 +chardet==5.1.0 \ + --hash=sha256:0d62712b956bc154f85fb0a266e2a3c5913c2967e00348701b32411d6def31e5 \ + --hash=sha256:362777fb014af596ad31334fde1e8c327dfdb076e1960d1694662d46a6917ab9 # via # binaryornot # python-debian -charset-normalizer==2.0.12 \ - --hash=sha256:2857e29ff0d34db842cd7ca3230549d1a697f96ee6d3fb071cfa6c7393832597 \ - --hash=sha256:6881edbebdb17b39b4eaaa821b438bf6eddffb4468cf344f09f89def34a8b1df - # via requests -idna==3.3 \ - --hash=sha256:84d9dd047ffa80596e0f246e2eab0b391788b0503584e8945f2368256d2735ff \ - --hash=sha256:9d643ff0a55b762d5cdb124b8eaa99c66322e2157b69160bc32796e824360e6d - # via requests -jinja2==3.0.3 \ - --hash=sha256:077ce6014f7b40d03b47d1f1ca4b0fc8328a692bd284016f806ed0eaca390ad8 \ - --hash=sha256:611bb273cd68f3b993fabdc4064fc858c5b47a973cb5aa7999ec1ba405c87cd7 - # via - # -r reuse-requirements.in - # reuse -license-expression==21.6.14 \ - --hash=sha256:324246eed8e138b4139fefdc0e9dc4161d5075e3929e56983966d37298dca30e \ - --hash=sha256:9de87a427c9a449eee7913472fb9ed03b63036295547369fdbf95f76a8b924b2 - # via - # -r reuse-requirements.in - # reuse -markupsafe==2.0.1 \ - --hash=sha256:01a9b8ea66f1658938f65b93a85ebe8bc016e6769611be228d797c9d998dd298 \ - --hash=sha256:023cb26ec21ece8dc3907c0e8320058b2e0cb3c55cf9564da612bc325bed5e64 \ - --hash=sha256:0446679737af14f45767963a1a9ef7620189912317d095f2d9ffa183a4d25d2b \ - --hash=sha256:04635854b943835a6ea959e948d19dcd311762c5c0c6e1f0e16ee57022669194 \ - --hash=sha256:0717a7390a68be14b8c793ba258e075c6f4ca819f15edfc2a3a027c823718567 \ - --hash=sha256:0955295dd5eec6cb6cc2fe1698f4c6d84af2e92de33fbcac4111913cd100a6ff \ - --hash=sha256:0d4b31cc67ab36e3392bbf3862cfbadac3db12bdd8b02a2731f509ed5b829724 \ - --hash=sha256:10f82115e21dc0dfec9ab5c0223652f7197feb168c940f3ef61563fc2d6beb74 \ - --hash=sha256:168cd0a3642de83558a5153c8bd34f175a9a6e7f6dc6384b9655d2697312a646 \ - --hash=sha256:1d609f577dc6e1aa17d746f8bd3c31aa4d258f4070d61b2aa5c4166c1539de35 \ - --hash=sha256:1f2ade76b9903f39aa442b4aadd2177decb66525062db244b35d71d0ee8599b6 \ - --hash=sha256:20dca64a3ef2d6e4d5d615a3fd418ad3bde77a47ec8a23d984a12b5b4c74491a \ - --hash=sha256:2a7d351cbd8cfeb19ca00de495e224dea7e7d919659c2841bbb7f420ad03e2d6 \ - --hash=sha256:2d7d807855b419fc2ed3e631034685db6079889a1f01d5d9dac950f764da3dad \ - --hash=sha256:2ef54abee730b502252bcdf31b10dacb0a416229b72c18b19e24a4509f273d26 \ - --hash=sha256:36bc903cbb393720fad60fc28c10de6acf10dc6cc883f3e24ee4012371399a38 \ - --hash=sha256:37205cac2a79194e3750b0af2a5720d95f786a55ce7df90c3af697bfa100eaac \ - --hash=sha256:3c112550557578c26af18a1ccc9e090bfe03832ae994343cfdacd287db6a6ae7 \ - --hash=sha256:3dd007d54ee88b46be476e293f48c85048603f5f516008bee124ddd891398ed6 \ - --hash=sha256:4296f2b1ce8c86a6aea78613c34bb1a672ea0e3de9c6ba08a960efe0b0a09047 \ - --hash=sha256:47ab1e7b91c098ab893b828deafa1203de86d0bc6ab587b160f78fe6c4011f75 \ - --hash=sha256:49e3ceeabbfb9d66c3aef5af3a60cc43b85c33df25ce03d0031a608b0a8b2e3f \ - --hash=sha256:4dc8f9fb58f7364b63fd9f85013b780ef83c11857ae79f2feda41e270468dd9b \ - --hash=sha256:4efca8f86c54b22348a5467704e3fec767b2db12fc39c6d963168ab1d3fc9135 \ - --hash=sha256:53edb4da6925ad13c07b6d26c2a852bd81e364f95301c66e930ab2aef5b5ddd8 \ - --hash=sha256:5855f8438a7d1d458206a2466bf82b0f104a3724bf96a1c781ab731e4201731a \ - --hash=sha256:594c67807fb16238b30c44bdf74f36c02cdf22d1c8cda91ef8a0ed8dabf5620a \ - --hash=sha256:5b6d930f030f8ed98e3e6c98ffa0652bdb82601e7a016ec2ab5d7ff23baa78d1 \ - --hash=sha256:5bb28c636d87e840583ee3adeb78172efc47c8b26127267f54a9c0ec251d41a9 \ - --hash=sha256:60bf42e36abfaf9aff1f50f52644b336d4f0a3fd6d8a60ca0d054ac9f713a864 \ - --hash=sha256:611d1ad9a4288cf3e3c16014564df047fe08410e628f89805e475368bd304914 \ - --hash=sha256:6300b8454aa6930a24b9618fbb54b5a68135092bc666f7b06901f897fa5c2fee \ - --hash=sha256:63f3268ba69ace99cab4e3e3b5840b03340efed0948ab8f78d2fd87ee5442a4f \ - --hash=sha256:6557b31b5e2c9ddf0de32a691f2312a32f77cd7681d8af66c2692efdbef84c18 \ - --hash=sha256:693ce3f9e70a6cf7d2fb9e6c9d8b204b6b39897a2c4a1aa65728d5ac97dcc1d8 \ - --hash=sha256:6a7fae0dd14cf60ad5ff42baa2e95727c3d81ded453457771d02b7d2b3f9c0c2 \ - --hash=sha256:6c4ca60fa24e85fe25b912b01e62cb969d69a23a5d5867682dd3e80b5b02581d \ - --hash=sha256:6fcf051089389abe060c9cd7caa212c707e58153afa2c649f00346ce6d260f1b \ - --hash=sha256:7d91275b0245b1da4d4cfa07e0faedd5b0812efc15b702576d103293e252af1b \ - --hash=sha256:89c687013cb1cd489a0f0ac24febe8c7a666e6e221b783e53ac50ebf68e45d86 \ - --hash=sha256:8d206346619592c6200148b01a2142798c989edcb9c896f9ac9722a99d4e77e6 \ - --hash=sha256:905fec760bd2fa1388bb5b489ee8ee5f7291d692638ea5f67982d968366bef9f \ - --hash=sha256:97383d78eb34da7e1fa37dd273c20ad4320929af65d156e35a5e2d89566d9dfb \ - --hash=sha256:984d76483eb32f1bcb536dc27e4ad56bba4baa70be32fa87152832cdd9db0833 \ - --hash=sha256:99df47edb6bda1249d3e80fdabb1dab8c08ef3975f69aed437cb69d0a5de1e28 \ - --hash=sha256:9f02365d4e99430a12647f09b6cc8bab61a6564363f313126f775eb4f6ef798e \ - --hash=sha256:a30e67a65b53ea0a5e62fe23682cfe22712e01f453b95233b25502f7c61cb415 \ - --hash=sha256:ab3ef638ace319fa26553db0624c4699e31a28bb2a835c5faca8f8acf6a5a902 \ - --hash=sha256:aca6377c0cb8a8253e493c6b451565ac77e98c2951c45f913e0b52facdcff83f \ - --hash=sha256:add36cb2dbb8b736611303cd3bfcee00afd96471b09cda130da3581cbdc56a6d \ - --hash=sha256:b2f4bf27480f5e5e8ce285a8c8fd176c0b03e93dcc6646477d4630e83440c6a9 \ - --hash=sha256:b7f2d075102dc8c794cbde1947378051c4e5180d52d276987b8d28a3bd58c17d \ - --hash=sha256:baa1a4e8f868845af802979fcdbf0bb11f94f1cb7ced4c4b8a351bb60d108145 \ - --hash=sha256:be98f628055368795d818ebf93da628541e10b75b41c559fdf36d104c5787066 \ - --hash=sha256:bf5d821ffabf0ef3533c39c518f3357b171a1651c1ff6827325e4489b0e46c3c \ - --hash=sha256:c47adbc92fc1bb2b3274c4b3a43ae0e4573d9fbff4f54cd484555edbf030baf1 \ - --hash=sha256:cdfba22ea2f0029c9261a4bd07e830a8da012291fbe44dc794e488b6c9bb353a \ - --hash=sha256:d6c7ebd4e944c85e2c3421e612a7057a2f48d478d79e61800d81468a8d842207 \ - --hash=sha256:d7f9850398e85aba693bb640262d3611788b1f29a79f0c93c565694658f4071f \ - --hash=sha256:d8446c54dc28c01e5a2dbac5a25f071f6653e6e40f3a8818e8b45d790fe6ef53 \ - --hash=sha256:deb993cacb280823246a026e3b2d81c493c53de6acfd5e6bfe31ab3402bb37dd \ - --hash=sha256:e0f138900af21926a02425cf736db95be9f4af72ba1bb21453432a07f6082134 \ - --hash=sha256:e9936f0b261d4df76ad22f8fee3ae83b60d7c3e871292cd42f40b81b70afae85 \ - --hash=sha256:f0567c4dc99f264f49fe27da5f735f414c4e7e7dd850cfd8e69f0862d7c74ea9 \ - --hash=sha256:f5653a225f31e113b152e56f154ccbe59eeb1c7487b39b9d9f9cdb58e6c79dc5 \ - --hash=sha256:f826e31d18b516f653fe296d967d700fddad5901ae07c622bb3705955e1faa94 \ - --hash=sha256:f8ba0e8349a38d3001fae7eadded3f6606f0da5d748ee53cc1dab1d6527b9509 \ - --hash=sha256:f9081981fe268bd86831e5c75f7de206ef275defcb82bc70740ae6dc507aee51 \ - --hash=sha256:fa130dd50c57d53368c9d59395cb5526eda596d3ffe36666cd81a44d56e48872 - # via - # -r reuse-requirements.in - # jinja2 -python-debian==0.1.44 \ - --hash=sha256:11bd6f01c46da57982bdd66dd595e2d240feb32a85de3fd37c452102fd0337ab \ - --hash=sha256:65592fe3b64f6c6c93d94e2d2599db5e0c22831d3bcff07cb7b96d3840b1333e +jinja2==3.1.2 \ + --hash=sha256:31351a702a408a9e7595a8fc6150fc3f43bb6bf7e319770cbc0db9df9437e852 \ + --hash=sha256:6088930bfe239f0e6710546ab9c19c9ef35e29792895fed6e6e31a023a182a61 # via reuse -requests==2.26.0 \ - --hash=sha256:6c1246513ecd5ecd4528a0906f910e8f0f9c6b8ec72030dc9fd154dc1a6efd24 \ - --hash=sha256:b8aa58f8cf793ffd8782d3d8cb19e66ef36f7aba4353eec859e74678b01b07a7 - # via - # -r reuse-requirements.in - # reuse -reuse==1.0.0 \ - --hash=sha256:db3022be2d87f69c8f508b928023de3026f454ce17d01e22f770f7147ac1e8d4 \ - --hash=sha256:e2605e796311c424465d741ea2a1e1ad03bbb90b921d74750119c331ca5af46e +license-expression==30.0.0 \ + --hash=sha256:ad638292aa8493f84354909b517922cb823582c2ce2c4d880e42544a86bea8dd \ + --hash=sha256:e95325110110eb2b7539ee7773b97a0724d5371ec563cc718c8cac0e38cc40cc + # via reuse +markupsafe==2.1.1 \ + --hash=sha256:0212a68688482dc52b2d45013df70d169f542b7394fc744c02a57374a4207003 \ + --hash=sha256:089cf3dbf0cd6c100f02945abeb18484bd1ee57a079aefd52cffd17fba910b88 \ + --hash=sha256:10c1bfff05d95783da83491be968e8fe789263689c02724e0c691933c52994f5 \ + --hash=sha256:33b74d289bd2f5e527beadcaa3f401e0df0a89927c1559c8566c066fa4248ab7 \ + --hash=sha256:3799351e2336dc91ea70b034983ee71cf2f9533cdff7c14c90ea126bfd95d65a \ + --hash=sha256:3ce11ee3f23f79dbd06fb3d63e2f6af7b12db1d46932fe7bd8afa259a5996603 \ + --hash=sha256:421be9fbf0ffe9ffd7a378aafebbf6f4602d564d34be190fc19a193232fd12b1 \ + --hash=sha256:43093fb83d8343aac0b1baa75516da6092f58f41200907ef92448ecab8825135 \ + --hash=sha256:46d00d6cfecdde84d40e572d63735ef81423ad31184100411e6e3388d405e247 \ + --hash=sha256:4a33dea2b688b3190ee12bd7cfa29d39c9ed176bda40bfa11099a3ce5d3a7ac6 \ + --hash=sha256:4b9fe39a2ccc108a4accc2676e77da025ce383c108593d65cc909add5c3bd601 \ + --hash=sha256:56442863ed2b06d19c37f94d999035e15ee982988920e12a5b4ba29b62ad1f77 \ + --hash=sha256:671cd1187ed5e62818414afe79ed29da836dde67166a9fac6d435873c44fdd02 \ + --hash=sha256:694deca8d702d5db21ec83983ce0bb4b26a578e71fbdbd4fdcd387daa90e4d5e \ + --hash=sha256:6a074d34ee7a5ce3effbc526b7083ec9731bb3cbf921bbe1d3005d4d2bdb3a63 \ + --hash=sha256:6d0072fea50feec76a4c418096652f2c3238eaa014b2f94aeb1d56a66b41403f \ + --hash=sha256:6fbf47b5d3728c6aea2abb0589b5d30459e369baa772e0f37a0320185e87c980 \ + --hash=sha256:7f91197cc9e48f989d12e4e6fbc46495c446636dfc81b9ccf50bb0ec74b91d4b \ + --hash=sha256:86b1f75c4e7c2ac2ccdaec2b9022845dbb81880ca318bb7a0a01fbf7813e3812 \ + --hash=sha256:8dc1c72a69aa7e082593c4a203dcf94ddb74bb5c8a731e4e1eb68d031e8498ff \ + --hash=sha256:8e3dcf21f367459434c18e71b2a9532d96547aef8a871872a5bd69a715c15f96 \ + --hash=sha256:8e576a51ad59e4bfaac456023a78f6b5e6e7651dcd383bcc3e18d06f9b55d6d1 \ + --hash=sha256:96e37a3dc86e80bf81758c152fe66dbf60ed5eca3d26305edf01892257049925 \ + --hash=sha256:97a68e6ada378df82bc9f16b800ab77cbf4b2fada0081794318520138c088e4a \ + --hash=sha256:99a2a507ed3ac881b975a2976d59f38c19386d128e7a9a18b7df6fff1fd4c1d6 \ + --hash=sha256:a49907dd8420c5685cfa064a1335b6754b74541bbb3706c259c02ed65b644b3e \ + --hash=sha256:b09bf97215625a311f669476f44b8b318b075847b49316d3e28c08e41a7a573f \ + --hash=sha256:b7bd98b796e2b6553da7225aeb61f447f80a1ca64f41d83612e6139ca5213aa4 \ + --hash=sha256:b87db4360013327109564f0e591bd2a3b318547bcef31b468a92ee504d07ae4f \ + --hash=sha256:bcb3ed405ed3222f9904899563d6fc492ff75cce56cba05e32eff40e6acbeaa3 \ + --hash=sha256:d4306c36ca495956b6d568d276ac11fdd9c30a36f1b6eb928070dc5360b22e1c \ + --hash=sha256:d5ee4f386140395a2c818d149221149c54849dfcfcb9f1debfe07a8b8bd63f9a \ + --hash=sha256:dda30ba7e87fbbb7eab1ec9f58678558fd9a6b8b853530e176eabd064da81417 \ + --hash=sha256:e04e26803c9c3851c931eac40c695602c6295b8d432cbe78609649ad9bd2da8a \ + --hash=sha256:e1c0b87e09fa55a220f058d1d49d3fb8df88fbfab58558f1198e08c1e1de842a \ + --hash=sha256:e72591e9ecd94d7feb70c1cbd7be7b3ebea3f548870aa91e2732960fa4d57a37 \ + --hash=sha256:e8c843bbcda3a2f1e3c2ab25913c80a3c5376cd00c6e8c4a86a89a28c8dc5452 \ + --hash=sha256:efc1913fd2ca4f334418481c7e595c00aad186563bbc1ec76067848c7ca0a933 \ + --hash=sha256:f121a1420d4e173a5d96e47e9a0c0dcff965afdf1626d28de1460815f7c4ee7a \ + --hash=sha256:fc7b548b17d238737688817ab67deebb30e8073c95749d55538ed473130ec0c7 + # via jinja2 +python-debian==0.1.49 \ + --hash=sha256:880f3bc52e31599f2a9b432bd7691844286825087fccdcf2f6ffd5cd79a26f9f \ + --hash=sha256:8cf677a30dbcb4be7a99536c17e11308a827a4d22028dc59a67f6c6dd3f0f58c + # via reuse +reuse==1.1.0 \ + --hash=sha256:7a054f6e372ad02d0b1b07368030fc38746b50ed45f5422a81994e7a88b52f1f \ + --hash=sha256:b0f3fb9091ff513af04b555d14a4c529ab05f6a575ab192dd9b68244f1e0721d # via -r reuse-requirements.in -urllib3==1.26.10 \ - --hash=sha256:8298d6d56d39be0e3bc13c1c97d133f9b45d797169a0e11cdd0e0489d786f7ec \ - --hash=sha256:879ba4d1e89654d9769ce13121e0f94310ea32e8d2f8cf587b77c08bbcdb30d6 - # via requests - -# The following packages are considered to be unsafe in a requirements file: -setuptools==59.6.0 \ - --hash=sha256:22c7348c6d2976a52632c67f7ab0cdf40147db7789f9aed18734643fe9cf3373 \ - --hash=sha256:4ce92f1e1f8f01233ee9952c04f6b81d1e02939d6e1b488428154974a4d0783e - # via - # -r reuse-requirements.in - # reuse +setuptools==66.0.0 \ + --hash=sha256:a78d01d1e2c175c474884671dde039962c9d74c7223db7369771fcf6e29ceeab \ + --hash=sha256:bd6eb2d6722568de6d14b87c44a96fac54b2a45ff5e940e639979a3d1792adb6 + # via reuse diff --git a/src/ci/docker/host-x86_64/x86_64-gnu-llvm-14/Dockerfile b/src/ci/docker/host-x86_64/x86_64-gnu-llvm-14/Dockerfile new file mode 100644 index 00000000000..db6032f8752 --- /dev/null +++ b/src/ci/docker/host-x86_64/x86_64-gnu-llvm-14/Dockerfile @@ -0,0 +1,67 @@ +FROM ubuntu:22.04 + +ARG DEBIAN_FRONTEND=noninteractive + +# NOTE: intentionally installs both python2 and python3 so we can test support for both. +RUN apt-get update && apt-get install -y --no-install-recommends \ + g++ \ + gcc-multilib \ + make \ + ninja-build \ + file \ + curl \ + ca-certificates \ + python2.7 \ + python3 \ + git \ + cmake \ + sudo \ + gdb \ + llvm-14-tools \ + llvm-14-dev \ + libedit-dev \ + libssl-dev \ + pkg-config \ + zlib1g-dev \ + xz-utils \ + nodejs \ + && rm -rf /var/lib/apt/lists/* + +# Install powershell (universal package) so we can test x.ps1 on Linux +RUN curl -sL "https://github.com/PowerShell/PowerShell/releases/download/v7.3.1/powershell_7.3.1-1.deb_amd64.deb" > powershell.deb && \ + dpkg -i powershell.deb && \ + rm -f powershell.deb + +COPY scripts/sccache.sh /scripts/ +RUN sh /scripts/sccache.sh + +# We are disabling CI LLVM since this builder is intentionally using a host +# LLVM, rather than the typical src/llvm-project LLVM. +ENV NO_DOWNLOAD_CI_LLVM 1 + +# Using llvm-link-shared due to libffi issues -- see #34486 +ENV RUST_CONFIGURE_ARGS \ + --build=x86_64-unknown-linux-gnu \ + --llvm-root=/usr/lib/llvm-14 \ + --enable-llvm-link-shared \ + --set rust.thin-lto-import-instr-limit=10 + +# NOTE: intentionally uses all of `x.py`, `x`, and `x.ps1` to make sure they all work on Linux. +ENV SCRIPT ../x.py --stage 2 test --exclude src/tools/tidy && \ + # Run the `mir-opt` tests again but this time for a 32-bit target. + # This enforces that tests using `// EMIT_MIR_FOR_EACH_BIT_WIDTH` have + # both 32-bit and 64-bit outputs updated by the PR author, before + # the PR is approved and tested for merging. + # It will also detect tests lacking `// EMIT_MIR_FOR_EACH_BIT_WIDTH`, + # despite having different output on 32-bit vs 64-bit targets. + ../x --stage 2 test tests/mir-opt \ + --host='' --target=i686-unknown-linux-gnu && \ + # Run the UI test suite again, but in `--pass=check` mode + # + # This is intended to make sure that both `--pass=check` continues to + # work. + # + ../x.ps1 --stage 2 test tests/ui --pass=check \ + --host='' --target=i686-unknown-linux-gnu && \ + # Run tidy at the very end, after all the other tests. + python2.7 ../x.py --stage 2 test src/tools/tidy diff --git a/src/ci/docker/host-x86_64/x86_64-gnu-llvm-15/Dockerfile b/src/ci/docker/host-x86_64/x86_64-gnu-llvm-15/Dockerfile new file mode 100644 index 00000000000..5219247cc6f --- /dev/null +++ b/src/ci/docker/host-x86_64/x86_64-gnu-llvm-15/Dockerfile @@ -0,0 +1,67 @@ +FROM ubuntu:22.10 + +ARG DEBIAN_FRONTEND=noninteractive + +# NOTE: intentionally installs both python2 and python3 so we can test support for both. +RUN apt-get update && apt-get install -y --no-install-recommends \ + g++ \ + gcc-multilib \ + make \ + ninja-build \ + file \ + curl \ + ca-certificates \ + python2.7 \ + python3 \ + git \ + cmake \ + sudo \ + gdb \ + llvm-15-tools \ + llvm-15-dev \ + libedit-dev \ + libssl-dev \ + pkg-config \ + zlib1g-dev \ + xz-utils \ + nodejs \ + && rm -rf /var/lib/apt/lists/* + +# Install powershell (universal package) so we can test x.ps1 on Linux +RUN curl -sL "https://github.com/PowerShell/PowerShell/releases/download/v7.3.1/powershell_7.3.1-1.deb_amd64.deb" > powershell.deb && \ + dpkg -i powershell.deb && \ + rm -f powershell.deb + +COPY scripts/sccache.sh /scripts/ +RUN sh /scripts/sccache.sh + +# We are disabling CI LLVM since this builder is intentionally using a host +# LLVM, rather than the typical src/llvm-project LLVM. +ENV NO_DOWNLOAD_CI_LLVM 1 + +# Using llvm-link-shared due to libffi issues -- see #34486 +ENV RUST_CONFIGURE_ARGS \ + --build=x86_64-unknown-linux-gnu \ + --llvm-root=/usr/lib/llvm-15 \ + --enable-llvm-link-shared \ + --set rust.thin-lto-import-instr-limit=10 + +# NOTE: intentionally uses all of `x.py`, `x`, and `x.ps1` to make sure they all work on Linux. +ENV SCRIPT ../x.py --stage 2 test --exclude src/tools/tidy && \ + # Run the `mir-opt` tests again but this time for a 32-bit target. + # This enforces that tests using `// EMIT_MIR_FOR_EACH_BIT_WIDTH` have + # both 32-bit and 64-bit outputs updated by the PR author, before + # the PR is approved and tested for merging. + # It will also detect tests lacking `// EMIT_MIR_FOR_EACH_BIT_WIDTH`, + # despite having different output on 32-bit vs 64-bit targets. + ../x --stage 2 test tests/mir-opt \ + --host='' --target=i686-unknown-linux-gnu && \ + # Run the UI test suite again, but in `--pass=check` mode + # + # This is intended to make sure that both `--pass=check` continues to + # work. + # + ../x.ps1 --stage 2 test tests/ui --pass=check \ + --host='' --target=i686-unknown-linux-gnu && \ + # Run tidy at the very end, after all the other tests. + python2.7 ../x.py --stage 2 test src/tools/tidy diff --git a/src/ci/github-actions/ci.yml b/src/ci/github-actions/ci.yml index d2a9264c84a..a466777dd46 100644 --- a/src/ci/github-actions/ci.yml +++ b/src/ci/github-actions/ci.yml @@ -450,6 +450,16 @@ jobs: - name: x86_64-gnu-distcheck <<: *job-linux-xl + - name: x86_64-gnu-llvm-15 + env: + RUST_BACKTRACE: 1 + <<: *job-linux-xl + + - name: x86_64-gnu-llvm-14 + env: + RUST_BACKTRACE: 1 + <<: *job-linux-xl + - name: x86_64-gnu-llvm-13 env: RUST_BACKTRACE: 1 diff --git a/src/librustdoc/clean/inline.rs b/src/librustdoc/clean/inline.rs index b3b09331233..da300b89a4e 100644 --- a/src/librustdoc/clean/inline.rs +++ b/src/librustdoc/clean/inline.rs @@ -9,7 +9,7 @@ use rustc_ast as ast; use rustc_data_structures::fx::FxHashSet; use rustc_hir as hir; use rustc_hir::def::{DefKind, Res}; -use rustc_hir::def_id::{DefId, LocalDefId}; +use rustc_hir::def_id::{DefId, DefIdSet, LocalDefId}; use rustc_hir::Mutability; use rustc_metadata::creader::{CStore, LoadedMacro}; use rustc_middle::ty::{self, TyCtxt}; @@ -45,7 +45,7 @@ pub(crate) fn try_inline( res: Res, name: Symbol, attrs: Option<&[ast::Attribute]>, - visited: &mut FxHashSet<DefId>, + visited: &mut DefIdSet, ) -> Option<Vec<clean::Item>> { let did = res.opt_def_id()?; if did.is_local() { @@ -163,7 +163,7 @@ pub(crate) fn try_inline_glob( cx: &mut DocContext<'_>, res: Res, current_mod: LocalDefId, - visited: &mut FxHashSet<DefId>, + visited: &mut DefIdSet, inlined_names: &mut FxHashSet<(ItemType, Symbol)>, ) -> Option<Vec<clean::Item>> { let did = res.opt_def_id()?; @@ -568,11 +568,7 @@ pub(crate) fn build_impl( )); } -fn build_module( - cx: &mut DocContext<'_>, - did: DefId, - visited: &mut FxHashSet<DefId>, -) -> clean::Module { +fn build_module(cx: &mut DocContext<'_>, did: DefId, visited: &mut DefIdSet) -> clean::Module { let items = build_module_items(cx, did, visited, &mut FxHashSet::default(), None); let span = clean::Span::new(cx.tcx.def_span(did)); @@ -582,9 +578,9 @@ fn build_module( fn build_module_items( cx: &mut DocContext<'_>, did: DefId, - visited: &mut FxHashSet<DefId>, + visited: &mut DefIdSet, inlined_names: &mut FxHashSet<(ItemType, Symbol)>, - allowed_def_ids: Option<&FxHashSet<DefId>>, + allowed_def_ids: Option<&DefIdSet>, ) -> Vec<clean::Item> { let mut items = Vec::new(); diff --git a/src/librustdoc/clean/mod.rs b/src/librustdoc/clean/mod.rs index 20984696b6c..34a7068e5da 100644 --- a/src/librustdoc/clean/mod.rs +++ b/src/librustdoc/clean/mod.rs @@ -15,7 +15,7 @@ use rustc_attr as attr; use rustc_data_structures::fx::{FxHashMap, FxHashSet, FxIndexMap, FxIndexSet, IndexEntry}; use rustc_hir as hir; use rustc_hir::def::{CtorKind, DefKind, Res}; -use rustc_hir::def_id::{DefId, LOCAL_CRATE}; +use rustc_hir::def_id::{DefId, DefIdMap, DefIdSet, LOCAL_CRATE}; use rustc_hir::PredicateOrigin; use rustc_hir_analysis::hir_ty_to_ty; use rustc_infer::infer::region_constraints::{Constraint, RegionConstraintData}; @@ -1528,7 +1528,7 @@ fn maybe_expand_private_type_alias<'tcx>( let hir::ItemKind::TyAlias(ty, generics) = alias else { return None }; let provided_params = &path.segments.last().expect("segments were empty"); - let mut substs = FxHashMap::default(); + let mut substs = DefIdMap::default(); let generic_args = provided_params.args(); let mut indices: hir::GenericParamCount = Default::default(); @@ -2321,7 +2321,7 @@ fn clean_extern_crate<'tcx>( let krate_owner_def_id = krate.owner_id.to_def_id(); if please_inline { - let mut visited = FxHashSet::default(); + let mut visited = DefIdSet::default(); let res = Res::Def(DefKind::Mod, crate_def_id); @@ -2440,7 +2440,7 @@ fn clean_use_statement_inner<'tcx>( let path = clean_path(path, cx); let inner = if kind == hir::UseKind::Glob { if !denied { - let mut visited = FxHashSet::default(); + let mut visited = DefIdSet::default(); if let Some(items) = inline::try_inline_glob(cx, path.res, current_mod, &mut visited, inlined_names) { @@ -2459,7 +2459,7 @@ fn clean_use_statement_inner<'tcx>( } } if !denied { - let mut visited = FxHashSet::default(); + let mut visited = DefIdSet::default(); let import_def_id = import.owner_id.to_def_id(); if let Some(mut items) = inline::try_inline( diff --git a/src/librustdoc/clean/types.rs b/src/librustdoc/clean/types.rs index 87de41fde63..a020ccd53b8 100644 --- a/src/librustdoc/clean/types.rs +++ b/src/librustdoc/clean/types.rs @@ -2498,14 +2498,7 @@ impl Import { } pub(crate) fn imported_item_is_doc_hidden(&self, tcx: TyCtxt<'_>) -> bool { - match self.source.did { - Some(did) => tcx - .get_attrs(did, sym::doc) - .filter_map(ast::Attribute::meta_item_list) - .flatten() - .has_word(sym::hidden), - None => false, - } + self.source.did.map_or(false, |did| tcx.is_doc_hidden(did)) } } diff --git a/src/librustdoc/core.rs b/src/librustdoc/core.rs index 2153e7d8c9a..10b606f425e 100644 --- a/src/librustdoc/core.rs +++ b/src/librustdoc/core.rs @@ -6,7 +6,7 @@ use rustc_errors::emitter::{Emitter, EmitterWriter}; use rustc_errors::json::JsonEmitter; use rustc_feature::UnstableFeatures; use rustc_hir::def::{Namespace, Res}; -use rustc_hir::def_id::{DefId, DefIdMap, LocalDefId}; +use rustc_hir::def_id::{DefId, DefIdMap, DefIdSet, LocalDefId}; use rustc_hir::intravisit::{self, Visitor}; use rustc_hir::{HirId, Path, TraitCandidate}; use rustc_interface::interface; @@ -60,11 +60,11 @@ pub(crate) struct DocContext<'tcx> { pub(crate) external_traits: Rc<RefCell<FxHashMap<DefId, clean::Trait>>>, /// Used while populating `external_traits` to ensure we don't process the same trait twice at /// the same time. - pub(crate) active_extern_traits: FxHashSet<DefId>, + pub(crate) active_extern_traits: DefIdSet, // The current set of parameter substitutions, // for expanding type aliases at the HIR level: /// Table `DefId` of type, lifetime, or const parameter -> substituted type, lifetime, or const - pub(crate) substs: FxHashMap<DefId, clean::SubstParam>, + pub(crate) substs: DefIdMap<clean::SubstParam>, /// Table synthetic type parameter for `impl Trait` in argument position -> bounds pub(crate) impl_trait_bounds: FxHashMap<ImplTraitParam, Vec<clean::GenericBound>>, /// Auto-trait or blanket impls processed so far, as `(self_ty, trait_def_id)`. @@ -108,11 +108,7 @@ impl<'tcx> DocContext<'tcx> { /// Call the closure with the given parameters set as /// the substitutions for a type alias' RHS. - pub(crate) fn enter_alias<F, R>( - &mut self, - substs: FxHashMap<DefId, clean::SubstParam>, - f: F, - ) -> R + pub(crate) fn enter_alias<F, R>(&mut self, substs: DefIdMap<clean::SubstParam>, f: F) -> R where F: FnOnce(&mut Self) -> R, { diff --git a/src/librustdoc/formats/cache.rs b/src/librustdoc/formats/cache.rs index 1c78c5b8d28..24752cddb33 100644 --- a/src/librustdoc/formats/cache.rs +++ b/src/librustdoc/formats/cache.rs @@ -1,7 +1,7 @@ use std::mem; use rustc_data_structures::fx::{FxHashMap, FxHashSet}; -use rustc_hir::def_id::{CrateNum, DefId}; +use rustc_hir::def_id::{CrateNum, DefId, DefIdMap, DefIdSet}; use rustc_middle::ty::{self, TyCtxt}; use rustc_span::Symbol; @@ -33,7 +33,7 @@ pub(crate) struct Cache { /// /// The values of the map are a list of implementations and documentation /// found on that implementation. - pub(crate) impls: FxHashMap<DefId, Vec<Impl>>, + pub(crate) impls: DefIdMap<Vec<Impl>>, /// Maintains a mapping of local crate `DefId`s to the fully qualified name /// and "short type description" of that node. This is used when generating @@ -56,7 +56,7 @@ pub(crate) struct Cache { /// to the path used if the corresponding type is inlined. By /// doing this, we can detect duplicate impls on a trait page, and only display /// the impl for the inlined type. - pub(crate) exact_paths: FxHashMap<DefId, Vec<Symbol>>, + pub(crate) exact_paths: DefIdMap<Vec<Symbol>>, /// This map contains information about all known traits of this crate. /// Implementations of a crate should inherit the documentation of the @@ -127,7 +127,7 @@ pub(crate) struct Cache { struct CacheBuilder<'a, 'tcx> { cache: &'a mut Cache, /// This field is used to prevent duplicated impl blocks. - impl_ids: FxHashMap<DefId, FxHashSet<DefId>>, + impl_ids: DefIdMap<DefIdSet>, tcx: TyCtxt<'tcx>, } @@ -173,7 +173,7 @@ impl Cache { let (krate, mut impl_ids) = { let mut cache_builder = - CacheBuilder { tcx, cache: &mut cx.cache, impl_ids: FxHashMap::default() }; + CacheBuilder { tcx, cache: &mut cx.cache, impl_ids: Default::default() }; krate = cache_builder.fold_crate(krate); (krate, cache_builder.impl_ids) }; diff --git a/src/librustdoc/html/format.rs b/src/librustdoc/html/format.rs index d3dc4065dfc..33404a76835 100644 --- a/src/librustdoc/html/format.rs +++ b/src/librustdoc/html/format.rs @@ -1064,14 +1064,8 @@ fn fmt_type<'cx>( fmt_type(ty, f, use_absolute, cx)?; write!(f, ")") } - clean::Generic(..) => { - primitive_link( - f, - PrimitiveType::Reference, - &format!("{}{}{}", amp, lt, m), - cx, - )?; - fmt_type(ty, f, use_absolute, cx) + clean::Generic(name) => { + primitive_link(f, PrimitiveType::Reference, &format!("{amp}{lt}{m}{name}"), cx) } _ => { write!(f, "{}{}{}", amp, lt, m)?; diff --git a/src/librustdoc/html/render/context.rs b/src/librustdoc/html/render/context.rs index 5cefe9475e7..15258a467a2 100644 --- a/src/librustdoc/html/render/context.rs +++ b/src/librustdoc/html/render/context.rs @@ -6,7 +6,7 @@ use std::rc::Rc; use std::sync::mpsc::{channel, Receiver}; use rustc_data_structures::fx::{FxHashMap, FxHashSet}; -use rustc_hir::def_id::{DefId, LOCAL_CRATE}; +use rustc_hir::def_id::{DefIdMap, LOCAL_CRATE}; use rustc_middle::ty::TyCtxt; use rustc_session::Session; use rustc_span::edition::Edition; @@ -56,7 +56,7 @@ pub(crate) struct Context<'tcx> { pub(super) render_redirect_pages: bool, /// Tracks section IDs for `Deref` targets so they match in both the main /// body and the sidebar. - pub(super) deref_id_map: FxHashMap<DefId, String>, + pub(super) deref_id_map: DefIdMap<String>, /// The map used to ensure all generated 'id=' attributes are unique. pub(super) id_map: IdMap, /// Shared mutable state. @@ -544,7 +544,7 @@ impl<'tcx> FormatRenderer<'tcx> for Context<'tcx> { dst, render_redirect_pages: false, id_map, - deref_id_map: FxHashMap::default(), + deref_id_map: Default::default(), shared: Rc::new(scx), include_sources, types_with_notable_traits: FxHashSet::default(), @@ -572,7 +572,7 @@ impl<'tcx> FormatRenderer<'tcx> for Context<'tcx> { current: self.current.clone(), dst: self.dst.clone(), render_redirect_pages: self.render_redirect_pages, - deref_id_map: FxHashMap::default(), + deref_id_map: Default::default(), id_map: IdMap::new(), shared: Rc::clone(&self.shared), include_sources: self.include_sources, diff --git a/src/librustdoc/html/render/mod.rs b/src/librustdoc/html/render/mod.rs index 4fa33e8907d..d644293d3ef 100644 --- a/src/librustdoc/html/render/mod.rs +++ b/src/librustdoc/html/render/mod.rs @@ -50,7 +50,7 @@ use rustc_ast_pretty::pprust; use rustc_attr::{ConstStability, Deprecation, StabilityLevel}; use rustc_data_structures::fx::{FxHashMap, FxHashSet}; use rustc_hir::def::CtorKind; -use rustc_hir::def_id::DefId; +use rustc_hir::def_id::{DefId, DefIdSet}; use rustc_hir::Mutability; use rustc_middle::middle::stability; use rustc_middle::ty; @@ -1115,7 +1115,7 @@ fn render_assoc_items( it: DefId, what: AssocItemRender<'_>, ) { - let mut derefs = FxHashSet::default(); + let mut derefs = DefIdSet::default(); derefs.insert(it); render_assoc_items_inner(w, cx, containing_item, it, what, &mut derefs) } @@ -1126,7 +1126,7 @@ fn render_assoc_items_inner( containing_item: &clean::Item, it: DefId, what: AssocItemRender<'_>, - derefs: &mut FxHashSet<DefId>, + derefs: &mut DefIdSet, ) { info!("Documenting associated items of {:?}", containing_item.name); let shared = Rc::clone(&cx.shared); @@ -1215,7 +1215,7 @@ fn render_deref_methods( impl_: &Impl, container_item: &clean::Item, deref_mut: bool, - derefs: &mut FxHashSet<DefId>, + derefs: &mut DefIdSet, ) { let cache = cx.cache(); let deref_type = impl_.inner_impl().trait_.as_ref().unwrap(); @@ -2175,7 +2175,7 @@ fn sidebar_assoc_items(cx: &Context<'_>, out: &mut Buffer, it: &clean::Item) { if let Some(impl_) = v.iter().find(|i| i.trait_did() == cx.tcx().lang_items().deref_trait()) { - let mut derefs = FxHashSet::default(); + let mut derefs = DefIdSet::default(); derefs.insert(did); sidebar_deref_methods(cx, out, impl_, v, &mut derefs, &mut used_links); } @@ -2195,7 +2195,7 @@ fn sidebar_deref_methods( out: &mut Buffer, impl_: &Impl, v: &[Impl], - derefs: &mut FxHashSet<DefId>, + derefs: &mut DefIdSet, used_links: &mut FxHashSet<String>, ) { let c = cx.cache(); diff --git a/src/librustdoc/html/render/write_shared.rs b/src/librustdoc/html/render/write_shared.rs index ca3e9916487..bc8badad38e 100644 --- a/src/librustdoc/html/render/write_shared.rs +++ b/src/librustdoc/html/render/write_shared.rs @@ -138,7 +138,7 @@ pub(super) fn write_shared( Ok((ret, krates)) } - /// Read a file and return all lines that match the <code>"{crate}":{data},\ </code> format, + /// Read a file and return all lines that match the <code>"{crate}":{data},\</code> format, /// and return a tuple `(Vec<DataString>, Vec<CrateNameString>)`. /// /// This forms the payload of files that look like this: diff --git a/src/librustdoc/html/static/css/rustdoc.css b/src/librustdoc/html/static/css/rustdoc.css index a08b8d89db6..bf83ff2044e 100644 --- a/src/librustdoc/html/static/css/rustdoc.css +++ b/src/librustdoc/html/static/css/rustdoc.css @@ -497,7 +497,7 @@ ul.block, .block li { padding-left: 24px; } -.sidebar a, .sidebar .current { +.sidebar a { color: var(--sidebar-link-color); } .sidebar .current, @@ -533,7 +533,7 @@ ul.block, .block li { .rustdoc .example-wrap > pre { margin: 0; flex-grow: 1; - overflow-x: auto; + overflow: auto hidden; } .rustdoc .example-wrap > pre.example-line-numbers, @@ -1897,19 +1897,25 @@ in storage.js right: 0.25em; } -.scraped-example:not(.expanded) .code-wrapper:before, -.scraped-example:not(.expanded) .code-wrapper:after { +.scraped-example:not(.expanded) .code-wrapper::before, +.scraped-example:not(.expanded) .code-wrapper::after { content: " "; width: 100%; height: 5px; position: absolute; z-index: 1; } -.scraped-example:not(.expanded) .code-wrapper:before { +.scraped-example:not(.expanded) .code-wrapper::before { top: 0; + background: linear-gradient(to bottom, + var(--scrape-example-code-wrapper-background-start), + var(--scrape-example-code-wrapper-background-end)); } -.scraped-example:not(.expanded) .code-wrapper:after { +.scraped-example:not(.expanded) .code-wrapper::after { bottom: 0; + background: linear-gradient(to top, + var(--scrape-example-code-wrapper-background-start), + var(--scrape-example-code-wrapper-background-end)); } .scraped-example .code-wrapper .example-wrap { diff --git a/src/librustdoc/html/static/css/settings.css b/src/librustdoc/html/static/css/settings.css index 7211ffb7795..c28cefebc8b 100644 --- a/src/librustdoc/html/static/css/settings.css +++ b/src/librustdoc/html/static/css/settings.css @@ -3,13 +3,7 @@ position: relative; } -.setting-line .choices { - display: flex; - flex-wrap: wrap; -} - -.setting-line .radio-line input, -.setting-line .settings-toggle input { +.setting-radio input, .setting-check input { margin-right: 0.3em; height: 1.2rem; width: 1.2rem; @@ -19,34 +13,33 @@ -webkit-appearance: none; cursor: pointer; } -.setting-line .radio-line input { +.setting-radio input { border-radius: 50%; } -.setting-line .settings-toggle input:checked { +.setting-check input:checked { content: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 40 40">\ <path d="M7,25L17,32L33,12" fill="none" stroke="black" stroke-width="5"/>\ <path d="M7,23L17,30L33,10" fill="none" stroke="white" stroke-width="5"/></svg>'); } -.setting-line .radio-line input + span, -.setting-line .settings-toggle span { +.setting-radio span, .setting-check span { padding-bottom: 1px; } -.radio-line .choice { +.setting-radio { margin-top: 0.1em; margin-bottom: 0.1em; min-width: 3.8em; padding: 0.3em; - display: flex; + display: inline-flex; align-items: center; cursor: pointer; } -.radio-line .choice + .choice { +.setting-radio + .setting-radio { margin-left: 0.5em; } -.settings-toggle { +.setting-check { position: relative; width: 100%; margin-right: 20px; @@ -55,23 +48,21 @@ cursor: pointer; } -.setting-line .radio-line input:checked { +.setting-radio input:checked { box-shadow: inset 0 0 0 3px var(--main-background-color); background-color: var(--settings-input-color); } -.setting-line .settings-toggle input:checked { +.setting-check input:checked { background-color: var(--settings-input-color); } -.setting-line .radio-line input:focus, -.setting-line .settings-toggle input:focus { +.setting-radio input:focus, .setting-check input:focus { box-shadow: 0 0 1px 1px var(--settings-input-color); } /* In here we combine both `:focus` and `:checked` properties. */ -.setting-line .radio-line input:checked:focus { +.setting-radio input:checked:focus { box-shadow: inset 0 0 0 3px var(--main-background-color), 0 0 2px 2px var(--settings-input-color); } -.setting-line .radio-line input:hover, -.setting-line .settings-toggle input:hover { +.setting-radio input:hover, .setting-check input:hover { border-color: var(--settings-input-color) !important; } diff --git a/src/librustdoc/html/static/css/themes/ayu.css b/src/librustdoc/html/static/css/themes/ayu.css index 979e7e0f999..ed779bf6166 100644 --- a/src/librustdoc/html/static/css/themes/ayu.css +++ b/src/librustdoc/html/static/css/themes/ayu.css @@ -97,6 +97,8 @@ Original by Dempfi (https://github.com/dempfi/ayu) --scrape-example-help-color: #eee; --scrape-example-help-hover-border-color: #fff; --scrape-example-help-hover-color: #fff; + --scrape-example-code-wrapper-background-start: rgba(15, 20, 25, 1); + --scrape-example-code-wrapper-background-end: rgba(15, 20, 25, 0); } h1, h2, h3, h4 { @@ -203,10 +205,3 @@ above the `@media (max-width: 700px)` rules due to a bug in the css checker */ #source-sidebar div.files > a.selected { color: #ffb44c; } - -.scraped-example:not(.expanded) .code-wrapper::before { - background: linear-gradient(to bottom, rgba(15, 20, 25, 1), rgba(15, 20, 25, 0)); -} -.scraped-example:not(.expanded) .code-wrapper::after { - background: linear-gradient(to top, rgba(15, 20, 25, 1), rgba(15, 20, 25, 0)); -} diff --git a/src/librustdoc/html/static/css/themes/dark.css b/src/librustdoc/html/static/css/themes/dark.css index fb15863b027..3766f0daa42 100644 --- a/src/librustdoc/html/static/css/themes/dark.css +++ b/src/librustdoc/html/static/css/themes/dark.css @@ -92,6 +92,8 @@ --scrape-example-help-color: #eee; --scrape-example-help-hover-border-color: #fff; --scrape-example-help-hover-color: #fff; + --scrape-example-code-wrapper-background-start: rgba(53, 53, 53, 1); + --scrape-example-code-wrapper-background-end: rgba(53, 53, 53, 0); } #search-tabs > button:not(.selected) { @@ -103,10 +105,3 @@ border-top-color: #0089ff; background-color: #353535; } - -.scraped-example:not(.expanded) .code-wrapper::before { - background: linear-gradient(to bottom, rgba(53, 53, 53, 1), rgba(53, 53, 53, 0)); -} -.scraped-example:not(.expanded) .code-wrapper::after { - background: linear-gradient(to top, rgba(53, 53, 53, 1), rgba(53, 53, 53, 0)); -} diff --git a/src/librustdoc/html/static/css/themes/light.css b/src/librustdoc/html/static/css/themes/light.css index 053fa78d1dc..8a7f6abcf8d 100644 --- a/src/librustdoc/html/static/css/themes/light.css +++ b/src/librustdoc/html/static/css/themes/light.css @@ -89,6 +89,8 @@ --scrape-example-help-color: #333; --scrape-example-help-hover-border-color: #000; --scrape-example-help-hover-color: #000; + --scrape-example-code-wrapper-background-start: rgba(255, 255, 255, 1); + --scrape-example-code-wrapper-background-end: rgba(255, 255, 255, 0); } #search-tabs > button:not(.selected) { @@ -100,10 +102,3 @@ background-color: #ffffff; border-top-color: #0089ff; } - -.scraped-example:not(.expanded) .code-wrapper::before { - background: linear-gradient(to bottom, rgba(255, 255, 255, 1), rgba(255, 255, 255, 0)); -} -.scraped-example:not(.expanded) .code-wrapper::after { - background: linear-gradient(to top, rgba(255, 255, 255, 1), rgba(255, 255, 255, 0)); -} diff --git a/src/librustdoc/html/static/js/settings.js b/src/librustdoc/html/static/js/settings.js index 84df1b7d391..a841b4b63ba 100644 --- a/src/librustdoc/html/static/js/settings.js +++ b/src/librustdoc/html/static/js/settings.js @@ -48,13 +48,13 @@ } function showLightAndDark() { - removeClass(document.getElementById("preferred-light-theme").parentElement, "hidden"); - removeClass(document.getElementById("preferred-dark-theme").parentElement, "hidden"); + removeClass(document.getElementById("preferred-light-theme"), "hidden"); + removeClass(document.getElementById("preferred-dark-theme"), "hidden"); } function hideLightAndDark() { - addClass(document.getElementById("preferred-light-theme").parentElement, "hidden"); - addClass(document.getElementById("preferred-dark-theme").parentElement, "hidden"); + addClass(document.getElementById("preferred-light-theme"), "hidden"); + addClass(document.getElementById("preferred-dark-theme"), "hidden"); } function updateLightAndDark() { @@ -80,17 +80,6 @@ toggle.onkeyup = handleKey; toggle.onkeyrelease = handleKey; }); - onEachLazy(settingsElement.getElementsByClassName("select-wrapper"), elem => { - const select = elem.getElementsByTagName("select")[0]; - const settingId = select.id; - const settingValue = getSettingValue(settingId); - if (settingValue !== null) { - select.value = settingValue; - } - select.onchange = function() { - changeSetting(this.id, this.value); - }; - }); onEachLazy(settingsElement.querySelectorAll("input[type=\"radio\"]"), elem => { const settingId = elem.name; let settingValue = getSettingValue(settingId); @@ -127,38 +116,40 @@ let output = ""; for (const setting of settings) { - output += "<div class=\"setting-line\">"; const js_data_name = setting["js_name"]; const setting_name = setting["name"]; if (setting["options"] !== undefined) { // This is a select setting. output += `\ -<div class="radio-line" id="${js_data_name}"> - <div class="setting-name">${setting_name}</div> -<div class="choices">`; +<div class="setting-line" id="${js_data_name}"> + <div class="setting-radio-name">${setting_name}</div> + <div class="setting-radio-choices">`; onEach(setting["options"], option => { const checked = option === setting["default"] ? " checked" : ""; const full = `${js_data_name}-${option.replace(/ /g,"-")}`; output += `\ -<label for="${full}" class="choice"> - <input type="radio" name="${js_data_name}" - id="${full}" value="${option}"${checked}> - <span>${option}</span> -</label>`; + <label for="${full}" class="setting-radio"> + <input type="radio" name="${js_data_name}" + id="${full}" value="${option}"${checked}> + <span>${option}</span> + </label>`; }); - output += "</div></div>"; + output += `\ + </div> +</div>`; } else { // This is a checkbox toggle. const checked = setting["default"] === true ? " checked" : ""; output += `\ -<label class="settings-toggle">\ - <input type="checkbox" id="${js_data_name}"${checked}>\ - <span class="label">${setting_name}</span>\ -</label>`; +<div class="setting-line">\ + <label class="setting-check">\ + <input type="checkbox" id="${js_data_name}"${checked}>\ + <span>${setting_name}</span>\ + </label>\ +</div>`; } - output += "</div>"; } return output; } diff --git a/src/librustdoc/json/import_finder.rs b/src/librustdoc/json/import_finder.rs index c5c687df74f..982370aa21c 100644 --- a/src/librustdoc/json/import_finder.rs +++ b/src/librustdoc/json/import_finder.rs @@ -1,5 +1,4 @@ -use rustc_data_structures::fx::FxHashSet; -use rustc_hir::def_id::DefId; +use rustc_hir::def_id::DefIdSet; use crate::{ clean::{self, Import, ImportSource, Item}, @@ -14,14 +13,15 @@ use crate::{ /// See [#100973](https://github.com/rust-lang/rust/issues/100973) and /// [#101103](https://github.com/rust-lang/rust/issues/101103) for times when /// this information is needed. -pub(crate) fn get_imports(krate: clean::Crate) -> (clean::Crate, FxHashSet<DefId>) { - let mut finder = ImportFinder { imported: FxHashSet::default() }; +pub(crate) fn get_imports(krate: clean::Crate) -> (clean::Crate, DefIdSet) { + let mut finder = ImportFinder::default(); let krate = finder.fold_crate(krate); (krate, finder.imported) } +#[derive(Default)] struct ImportFinder { - imported: FxHashSet<DefId>, + imported: DefIdSet, } impl DocFolder for ImportFinder { diff --git a/src/librustdoc/json/mod.rs b/src/librustdoc/json/mod.rs index 1196f944faa..5adc0d2a40e 100644 --- a/src/librustdoc/json/mod.rs +++ b/src/librustdoc/json/mod.rs @@ -13,8 +13,8 @@ use std::io::{BufWriter, Write}; use std::path::PathBuf; use std::rc::Rc; -use rustc_data_structures::fx::{FxHashMap, FxHashSet}; -use rustc_hir::def_id::DefId; +use rustc_data_structures::fx::FxHashMap; +use rustc_hir::def_id::{DefId, DefIdSet}; use rustc_middle::ty::TyCtxt; use rustc_session::Session; use rustc_span::def_id::LOCAL_CRATE; @@ -40,7 +40,7 @@ pub(crate) struct JsonRenderer<'tcx> { /// The directory where the blob will be written to. out_path: PathBuf, cache: Rc<Cache>, - imported_items: FxHashSet<DefId>, + imported_items: DefIdSet, } impl<'tcx> JsonRenderer<'tcx> { diff --git a/src/librustdoc/passes/collect_trait_impls.rs b/src/librustdoc/passes/collect_trait_impls.rs index 79db3c6c3e7..7d15a207d06 100644 --- a/src/librustdoc/passes/collect_trait_impls.rs +++ b/src/librustdoc/passes/collect_trait_impls.rs @@ -7,8 +7,8 @@ use crate::core::DocContext; use crate::formats::cache::Cache; use crate::visit::DocVisitor; -use rustc_data_structures::fx::{FxHashMap, FxHashSet}; -use rustc_hir::def_id::{DefId, LOCAL_CRATE}; +use rustc_data_structures::fx::FxHashSet; +use rustc_hir::def_id::{DefId, DefIdMap, DefIdSet, LOCAL_CRATE}; use rustc_middle::ty::{self, DefIdTree}; use rustc_span::symbol::sym; @@ -126,14 +126,14 @@ pub(crate) fn collect_trait_impls(mut krate: Crate, cx: &mut DocContext<'_>) -> }); let mut cleaner = BadImplStripper { prims, items: crate_items, cache: &cx.cache }; - let mut type_did_to_deref_target: FxHashMap<DefId, &Type> = FxHashMap::default(); + let mut type_did_to_deref_target: DefIdMap<&Type> = DefIdMap::default(); // Follow all `Deref` targets of included items and recursively add them as valid fn add_deref_target( cx: &DocContext<'_>, - map: &FxHashMap<DefId, &Type>, + map: &DefIdMap<&Type>, cleaner: &mut BadImplStripper<'_>, - targets: &mut FxHashSet<DefId>, + targets: &mut DefIdSet, type_did: DefId, ) { if let Some(target) = map.get(&type_did) { @@ -177,7 +177,7 @@ pub(crate) fn collect_trait_impls(mut krate: Crate, cx: &mut DocContext<'_>) -> // `Deref` target type and the impl for type positions, this map of types is keyed by // `DefId` and for convenience uses a special cleaner that accepts `DefId`s directly. if cleaner.keep_impl_with_def_id(for_did.into()) { - let mut targets = FxHashSet::default(); + let mut targets = DefIdSet::default(); targets.insert(for_did); add_deref_target( cx, diff --git a/src/librustdoc/visit_ast.rs b/src/librustdoc/visit_ast.rs index 7db47035967..00ea6ca4152 100644 --- a/src/librustdoc/visit_ast.rs +++ b/src/librustdoc/visit_ast.rs @@ -1,14 +1,11 @@ //! The Rust AST Visitor. Extracts useful information and massages it into a form //! usable for `clean`. -use rustc_data_structures::fx::{FxHashMap, FxHashSet}; +use rustc_data_structures::fx::FxHashSet; use rustc_hir as hir; use rustc_hir::def::{DefKind, Res}; -use rustc_hir::def_id::DefId; -use rustc_hir::intravisit::{walk_item, Visitor}; -use rustc_hir::Node; -use rustc_hir::CRATE_HIR_ID; -use rustc_middle::hir::nested_filter; +use rustc_hir::def_id::{DefId, DefIdMap}; +use rustc_hir::{HirIdSet, Node, CRATE_HIR_ID}; use rustc_middle::ty::TyCtxt; use rustc_span::def_id::{CRATE_DEF_ID, LOCAL_CRATE}; use rustc_span::symbol::{kw, sym, Symbol}; @@ -59,34 +56,29 @@ pub(crate) fn inherits_doc_hidden(tcx: TyCtxt<'_>, mut node: hir::HirId) -> bool false } +// Also, is there some reason that this doesn't use the 'visit' +// framework from syntax?. + pub(crate) struct RustdocVisitor<'a, 'tcx> { cx: &'a mut core::DocContext<'tcx>, - view_item_stack: FxHashSet<hir::HirId>, + view_item_stack: HirIdSet, inlining: bool, /// Are the current module and all of its parents public? inside_public_path: bool, - exact_paths: FxHashMap<DefId, Vec<Symbol>>, - modules: Vec<Module<'tcx>>, + exact_paths: DefIdMap<Vec<Symbol>>, } impl<'a, 'tcx> RustdocVisitor<'a, 'tcx> { pub(crate) fn new(cx: &'a mut core::DocContext<'tcx>) -> RustdocVisitor<'a, 'tcx> { // If the root is re-exported, terminate all recursion. - let mut stack = FxHashSet::default(); + let mut stack = HirIdSet::default(); stack.insert(hir::CRATE_HIR_ID); - let om = Module::new( - cx.tcx.crate_name(LOCAL_CRATE), - hir::CRATE_HIR_ID, - cx.tcx.hir().root_module().spans.inner_span, - ); - RustdocVisitor { cx, view_item_stack: stack, inlining: false, inside_public_path: true, - exact_paths: FxHashMap::default(), - modules: vec![om], + exact_paths: Default::default(), } } @@ -96,10 +88,12 @@ impl<'a, 'tcx> RustdocVisitor<'a, 'tcx> { } pub(crate) fn visit(mut self) -> Module<'tcx> { - let root_module = self.cx.tcx.hir().root_module(); - self.visit_mod_contents(CRATE_HIR_ID, root_module); - - let mut top_level_module = self.modules.pop().unwrap(); + let mut top_level_module = self.visit_mod_contents( + hir::CRATE_HIR_ID, + self.cx.tcx.hir().root_module(), + self.cx.tcx.crate_name(LOCAL_CRATE), + None, + ); // `#[macro_export] macro_rules!` items are reexported at the top level of the // crate, regardless of where they're defined. We want to document the @@ -114,13 +108,15 @@ impl<'a, 'tcx> RustdocVisitor<'a, 'tcx> { // macro in the same module. let mut inserted = FxHashSet::default(); for export in self.cx.tcx.module_reexports(CRATE_DEF_ID).unwrap_or(&[]) { - if let Res::Def(DefKind::Macro(_), def_id) = export.res && - let Some(local_def_id) = def_id.as_local() && - self.cx.tcx.has_attr(def_id, sym::macro_export) && - inserted.insert(def_id) - { - let item = self.cx.tcx.hir().expect_item(local_def_id); - top_level_module.items.push((item, None, None)); + if let Res::Def(DefKind::Macro(_), def_id) = export.res { + if let Some(local_def_id) = def_id.as_local() { + if self.cx.tcx.has_attr(def_id, sym::macro_export) { + if inserted.insert(def_id) { + let item = self.cx.tcx.hir().expect_item(local_def_id); + top_level_module.items.push((item, None, None)); + } + } + } } } @@ -154,23 +150,24 @@ impl<'a, 'tcx> RustdocVisitor<'a, 'tcx> { top_level_module } - /// This method will go through the given module items in two passes: - /// 1. The items which are not glob imports/reexports. - /// 2. The glob imports/reexports. - fn visit_mod_contents(&mut self, id: hir::HirId, m: &'tcx hir::Mod<'tcx>) { - debug!("Going through module {:?}", m); + fn visit_mod_contents( + &mut self, + id: hir::HirId, + m: &'tcx hir::Mod<'tcx>, + name: Symbol, + parent_id: Option<hir::HirId>, + ) -> Module<'tcx> { + let mut om = Module::new(name, id, m.spans.inner_span); let def_id = self.cx.tcx.hir().local_def_id(id).to_def_id(); // Keep track of if there were any private modules in the path. let orig_inside_public_path = self.inside_public_path; self.inside_public_path &= self.cx.tcx.visibility(def_id).is_public(); - - // Reimplementation of `walk_mod` because we need to do it in two passes (explanations in - // the second loop): for &i in m.item_ids { let item = self.cx.tcx.hir().item(i); - if !matches!(item.kind, hir::ItemKind::Use(_, hir::UseKind::Glob)) { - self.visit_item(item); + if matches!(item.kind, hir::ItemKind::Use(_, hir::UseKind::Glob)) { + continue; } + self.visit_item(item, None, &mut om, parent_id); } for &i in m.item_ids { let item = self.cx.tcx.hir().item(i); @@ -178,10 +175,11 @@ impl<'a, 'tcx> RustdocVisitor<'a, 'tcx> { // Later passes in rustdoc will de-duplicate by name and kind, so if glob- // imported items appear last, then they'll be the ones that get discarded. if matches!(item.kind, hir::ItemKind::Use(_, hir::UseKind::Glob)) { - self.visit_item(item); + self.visit_item(item, None, &mut om, parent_id); } } self.inside_public_path = orig_inside_public_path; + om } /// Tries to resolve the target of a `pub use` statement and inlines the @@ -199,6 +197,7 @@ impl<'a, 'tcx> RustdocVisitor<'a, 'tcx> { res: Res, renamed: Option<Symbol>, glob: bool, + om: &mut Module<'tcx>, please_inline: bool, ) -> bool { debug!("maybe_inline_local res: {:?}", res); @@ -249,20 +248,20 @@ impl<'a, 'tcx> RustdocVisitor<'a, 'tcx> { let prev = mem::replace(&mut self.inlining, true); for &i in m.item_ids { let i = self.cx.tcx.hir().item(i); - self.visit_item_inner(i, None, Some(id)); + self.visit_item(i, None, om, Some(id)); } self.inlining = prev; true } Node::Item(it) if !glob => { let prev = mem::replace(&mut self.inlining, true); - self.visit_item_inner(it, renamed, Some(id)); + self.visit_item(it, renamed, om, Some(id)); self.inlining = prev; true } Node::ForeignItem(it) if !glob => { let prev = mem::replace(&mut self.inlining, true); - self.visit_foreign_item_inner(it, renamed); + self.visit_foreign_item(it, renamed, om); self.inlining = prev; true } @@ -272,22 +271,13 @@ impl<'a, 'tcx> RustdocVisitor<'a, 'tcx> { ret } - #[inline] - fn add_to_current_mod( + fn visit_item( &mut self, item: &'tcx hir::Item<'_>, renamed: Option<Symbol>, + om: &mut Module<'tcx>, parent_id: Option<hir::HirId>, ) { - self.modules.last_mut().unwrap().items.push((item, renamed, parent_id)) - } - - fn visit_item_inner( - &mut self, - item: &'tcx hir::Item<'_>, - renamed: Option<Symbol>, - parent_id: Option<hir::HirId>, - ) -> bool { debug!("visiting item {:?}", item); let name = renamed.unwrap_or(item.ident.name); @@ -302,7 +292,7 @@ impl<'a, 'tcx> RustdocVisitor<'a, 'tcx> { hir::ItemKind::ForeignMod { items, .. } => { for item in items { let item = self.cx.tcx.hir().foreign_item(item.id); - self.visit_foreign_item_inner(item, None); + self.visit_foreign_item(item, None, om); } } // If we're inlining, skip private items or item reexported as "_". @@ -335,13 +325,14 @@ impl<'a, 'tcx> RustdocVisitor<'a, 'tcx> { res, ident, is_glob, + om, please_inline, ) { continue; } } - self.add_to_current_mod(item, renamed, parent_id); + om.items.push((item, renamed, parent_id)) } } hir::ItemKind::Macro(ref macro_def, _) => { @@ -361,11 +352,11 @@ impl<'a, 'tcx> RustdocVisitor<'a, 'tcx> { let nonexported = !self.cx.tcx.has_attr(def_id, sym::macro_export); if is_macro_2_0 || nonexported || self.inlining { - self.add_to_current_mod(item, renamed, None); + om.items.push((item, renamed, None)); } } hir::ItemKind::Mod(ref m) => { - self.enter_mod(item.hir_id(), m, name); + om.mods.push(self.visit_mod_contents(item.hir_id(), m, name, parent_id)); } hir::ItemKind::Fn(..) | hir::ItemKind::ExternCrate(..) @@ -376,92 +367,33 @@ impl<'a, 'tcx> RustdocVisitor<'a, 'tcx> { | hir::ItemKind::OpaqueTy(..) | hir::ItemKind::Static(..) | hir::ItemKind::Trait(..) - | hir::ItemKind::TraitAlias(..) => { - self.add_to_current_mod(item, renamed, parent_id); - } + | hir::ItemKind::TraitAlias(..) => om.items.push((item, renamed, parent_id)), hir::ItemKind::Const(..) => { // Underscore constants do not correspond to a nameable item and // so are never useful in documentation. if name != kw::Underscore { - self.add_to_current_mod(item, renamed, parent_id); + om.items.push((item, renamed, parent_id)); } } hir::ItemKind::Impl(impl_) => { // Don't duplicate impls when inlining or if it's implementing a trait, we'll pick // them up regardless of where they're located. if !self.inlining && impl_.of_trait.is_none() { - self.add_to_current_mod(item, None, None); + om.items.push((item, None, None)); } } } - true } - fn visit_foreign_item_inner( + fn visit_foreign_item( &mut self, item: &'tcx hir::ForeignItem<'_>, renamed: Option<Symbol>, + om: &mut Module<'tcx>, ) { // If inlining we only want to include public functions. if !self.inlining || self.cx.tcx.visibility(item.owner_id).is_public() { - self.modules.last_mut().unwrap().foreigns.push((item, renamed)); + om.foreigns.push((item, renamed)); } } - - /// This method will create a new module and push it onto the "modules stack" then call - /// `visit_mod_contents`. Once done, it'll remove it from the "modules stack" and instead - /// add into the list of modules of the current module. - fn enter_mod(&mut self, id: hir::HirId, m: &'tcx hir::Mod<'tcx>, name: Symbol) { - self.modules.push(Module::new(name, id, m.spans.inner_span)); - - self.visit_mod_contents(id, m); - - let last = self.modules.pop().unwrap(); - self.modules.last_mut().unwrap().mods.push(last); - } -} - -// We need to implement this visitor so it'll go everywhere and retrieve items we're interested in -// such as impl blocks in const blocks. -impl<'a, 'tcx> Visitor<'tcx> for RustdocVisitor<'a, 'tcx> { - type NestedFilter = nested_filter::All; - - fn nested_visit_map(&mut self) -> Self::Map { - self.cx.tcx.hir() - } - - fn visit_item(&mut self, i: &'tcx hir::Item<'tcx>) { - let parent_id = if self.modules.len() > 1 { - Some(self.modules[self.modules.len() - 2].id) - } else { - None - }; - if self.visit_item_inner(i, None, parent_id) { - walk_item(self, i); - } - } - - fn visit_mod(&mut self, _: &hir::Mod<'tcx>, _: Span, _: hir::HirId) { - // Handled in `visit_item_inner` - } - - fn visit_use(&mut self, _: &hir::UsePath<'tcx>, _: hir::HirId) { - // Handled in `visit_item_inner` - } - - fn visit_path(&mut self, _: &hir::Path<'tcx>, _: hir::HirId) { - // Handled in `visit_item_inner` - } - - fn visit_label(&mut self, _: &rustc_ast::Label) { - // Unneeded. - } - - fn visit_infer(&mut self, _: &hir::InferArg) { - // Unneeded. - } - - fn visit_lifetime(&mut self, _: &hir::Lifetime) { - // Unneeded. - } } diff --git a/src/librustdoc/visit_lib.rs b/src/librustdoc/visit_lib.rs index e490559b0e9..fd4f9254107 100644 --- a/src/librustdoc/visit_lib.rs +++ b/src/librustdoc/visit_lib.rs @@ -1,14 +1,13 @@ use crate::core::DocContext; -use rustc_data_structures::fx::FxHashSet; use rustc_hir::def::DefKind; -use rustc_hir::def_id::DefId; +use rustc_hir::def_id::{DefId, DefIdSet}; use rustc_middle::ty::TyCtxt; // FIXME: this may not be exhaustive, but is sufficient for rustdocs current uses #[derive(Default)] pub(crate) struct RustdocEffectiveVisibilities { - extern_public: FxHashSet<DefId>, + extern_public: DefIdSet, } macro_rules! define_method { @@ -43,9 +42,9 @@ pub(crate) fn lib_embargo_visit_item(cx: &mut DocContext<'_>, def_id: DefId) { struct LibEmbargoVisitor<'a, 'tcx> { tcx: TyCtxt<'tcx>, // Effective visibilities for reachable nodes - extern_public: &'a mut FxHashSet<DefId>, + extern_public: &'a mut DefIdSet, // Keeps track of already visited modules, in case a module re-exports its parent - visited_mods: FxHashSet<DefId>, + visited_mods: DefIdSet, } impl LibEmbargoVisitor<'_, '_> { diff --git a/src/llvm-project b/src/llvm-project -Subproject 9ad24035fea8d309753f5e39e6eb53d1d0eb39c +Subproject 477e7285b12f876ad105188cfcfc8adda7dc29a diff --git a/src/tools/cargo b/src/tools/cargo -Subproject a5d47a72595dd6fbe7d4e4f6ec20dc5fe724edd +Subproject 3c5af6bed9a1a243a693e8e22ee2486bd5b82a6 diff --git a/src/tools/clippy/clippy_lints/src/future_not_send.rs b/src/tools/clippy/clippy_lints/src/future_not_send.rs index 989f83cf80d..2a79b18b829 100644 --- a/src/tools/clippy/clippy_lints/src/future_not_send.rs +++ b/src/tools/clippy/clippy_lints/src/future_not_send.rs @@ -78,7 +78,8 @@ impl<'tcx> LateLintPass<'tcx> for FutureNotSend { let send_trait = cx.tcx.get_diagnostic_item(sym::Send).unwrap(); let span = decl.output.span(); let infcx = cx.tcx.infer_ctxt().build(); - let cause = traits::ObligationCause::misc(span, hir_id); + let def_id = cx.tcx.hir().local_def_id(hir_id); + let cause = traits::ObligationCause::misc(span, def_id); let send_errors = traits::fully_solve_bound(&infcx, cause, cx.param_env, ret_ty, send_trait); if !send_errors.is_empty() { span_lint_and_then( diff --git a/src/tools/clippy/clippy_lints/src/inherent_impl.rs b/src/tools/clippy/clippy_lints/src/inherent_impl.rs index c5abcc46254..e9b2e31a769 100644 --- a/src/tools/clippy/clippy_lints/src/inherent_impl.rs +++ b/src/tools/clippy/clippy_lints/src/inherent_impl.rs @@ -52,21 +52,19 @@ impl<'tcx> LateLintPass<'tcx> for MultipleInherentImpl { // List of spans to lint. (lint_span, first_span) let mut lint_spans = Vec::new(); - for (_, impl_ids) in cx + let inherent_impls = cx .tcx - .crate_inherent_impls(()) - .inherent_impls - .iter() - .filter(|(&id, impls)| { - impls.len() > 1 - // Check for `#[allow]` on the type definition - && !is_lint_allowed( - cx, - MULTIPLE_INHERENT_IMPL, - cx.tcx.hir().local_def_id_to_hir_id(id), - ) - }) - { + .with_stable_hashing_context(|hcx| cx.tcx.crate_inherent_impls(()).inherent_impls.to_sorted(&hcx, true)); + + for (_, impl_ids) in inherent_impls.into_iter().filter(|(&id, impls)| { + impls.len() > 1 + // Check for `#[allow]` on the type definition + && !is_lint_allowed( + cx, + MULTIPLE_INHERENT_IMPL, + cx.tcx.hir().local_def_id_to_hir_id(id), + ) + }) { for impl_id in impl_ids.iter().map(|id| id.expect_local()) { match type_map.entry(cx.tcx.type_of(impl_id)) { Entry::Vacant(e) => { diff --git a/src/tools/clippy/clippy_lints/src/instant_subtraction.rs b/src/tools/clippy/clippy_lints/src/instant_subtraction.rs index dd1b23e7d9d..9f6e8940571 100644 --- a/src/tools/clippy/clippy_lints/src/instant_subtraction.rs +++ b/src/tools/clippy/clippy_lints/src/instant_subtraction.rs @@ -61,7 +61,7 @@ declare_clippy_lint! { /// [`Instant::now()`]: std::time::Instant::now; #[clippy::version = "1.65.0"] pub UNCHECKED_DURATION_SUBTRACTION, - suspicious, + pedantic, "finds unchecked subtraction of a 'Duration' from an 'Instant'" } diff --git a/src/tools/clippy/clippy_lints/src/len_zero.rs b/src/tools/clippy/clippy_lints/src/len_zero.rs index 9eba4675629..3c70c9cf19a 100644 --- a/src/tools/clippy/clippy_lints/src/len_zero.rs +++ b/src/tools/clippy/clippy_lints/src/len_zero.rs @@ -219,7 +219,7 @@ fn check_trait_items(cx: &LateContext<'_>, visited_trait: &Item<'_>, trait_items let is_empty = sym!(is_empty); let is_empty_method_found = current_and_super_traits - .iter() + .items() .flat_map(|&i| cx.tcx.associated_items(i).filter_by_name_unhygienic(is_empty)) .any(|i| { i.kind == ty::AssocKind::Fn diff --git a/src/tools/clippy/clippy_lints/src/loops/while_immutable_condition.rs b/src/tools/clippy/clippy_lints/src/loops/while_immutable_condition.rs index a63422d2a36..d1a1f773f87 100644 --- a/src/tools/clippy/clippy_lints/src/loops/while_immutable_condition.rs +++ b/src/tools/clippy/clippy_lints/src/loops/while_immutable_condition.rs @@ -35,7 +35,7 @@ pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, cond: &'tcx Expr<'_>, expr: &' } else { return; }; - let mutable_static_in_cond = var_visitor.def_ids.iter().any(|(_, v)| *v); + let mutable_static_in_cond = var_visitor.def_ids.items().any(|(_, v)| *v); let mut has_break_or_return_visitor = HasBreakOrReturnVisitor { has_break_or_return: false, diff --git a/src/tools/clippy/clippy_lints/src/methods/unnecessary_to_owned.rs b/src/tools/clippy/clippy_lints/src/methods/unnecessary_to_owned.rs index 9263f051972..b812e81cb10 100644 --- a/src/tools/clippy/clippy_lints/src/methods/unnecessary_to_owned.rs +++ b/src/tools/clippy/clippy_lints/src/methods/unnecessary_to_owned.rs @@ -371,7 +371,7 @@ fn can_change_type<'a>(cx: &LateContext<'a>, mut expr: &'a Expr<'a>, mut ty: Ty< && let output_ty = return_ty(cx, item.hir_id()) && let local_def_id = cx.tcx.hir().local_def_id(item.hir_id()) && Inherited::build(cx.tcx, local_def_id).enter(|inherited| { - let fn_ctxt = FnCtxt::new(inherited, cx.param_env, item.hir_id()); + let fn_ctxt = FnCtxt::new(inherited, cx.param_env, local_def_id); fn_ctxt.can_coerce(ty, output_ty) }) { if has_lifetime(output_ty) && has_lifetime(ty) { diff --git a/src/tools/clippy/clippy_lints/src/missing_trait_methods.rs b/src/tools/clippy/clippy_lints/src/missing_trait_methods.rs index 68af8a672f6..3371b4cce32 100644 --- a/src/tools/clippy/clippy_lints/src/missing_trait_methods.rs +++ b/src/tools/clippy/clippy_lints/src/missing_trait_methods.rs @@ -80,19 +80,21 @@ impl<'tcx> LateLintPass<'tcx> for MissingTraitMethods { } } - for assoc in provided.values() { - let source_map = cx.tcx.sess.source_map(); - let definition_span = source_map.guess_head_span(cx.tcx.def_span(assoc.def_id)); + cx.tcx.with_stable_hashing_context(|hcx| { + for assoc in provided.values_sorted(&hcx, true) { + let source_map = cx.tcx.sess.source_map(); + let definition_span = source_map.guess_head_span(cx.tcx.def_span(assoc.def_id)); - span_lint_and_help( - cx, - MISSING_TRAIT_METHODS, - source_map.guess_head_span(item.span), - &format!("missing trait method provided by default: `{}`", assoc.name), - Some(definition_span), - "implement the method", - ); - } + span_lint_and_help( + cx, + MISSING_TRAIT_METHODS, + source_map.guess_head_span(item.span), + &format!("missing trait method provided by default: `{}`", assoc.name), + Some(definition_span), + "implement the method", + ); + } + }) } } } diff --git a/src/tools/clippy/clippy_lints/src/needless_pass_by_value.rs b/src/tools/clippy/clippy_lints/src/needless_pass_by_value.rs index 1249db5dc47..8c9d4c5cfe6 100644 --- a/src/tools/clippy/clippy_lints/src/needless_pass_by_value.rs +++ b/src/tools/clippy/clippy_lints/src/needless_pass_by_value.rs @@ -24,7 +24,7 @@ use rustc_span::symbol::kw; use rustc_span::{sym, Span}; use rustc_target::spec::abi::Abi; use rustc_trait_selection::traits; -use rustc_trait_selection::traits::misc::can_type_implement_copy; +use rustc_trait_selection::traits::misc::type_allowed_to_implement_copy; use std::borrow::Cow; declare_clippy_lint! { @@ -200,7 +200,7 @@ impl<'tcx> LateLintPass<'tcx> for NeedlessPassByValue { let sugg = |diag: &mut Diagnostic| { if let ty::Adt(def, ..) = ty.kind() { if let Some(span) = cx.tcx.hir().span_if_local(def.did()) { - if can_type_implement_copy( + if type_allowed_to_implement_copy( cx.tcx, cx.param_env, ty, diff --git a/src/tools/clippy/clippy_lints/src/pass_by_ref_or_value.rs b/src/tools/clippy/clippy_lints/src/pass_by_ref_or_value.rs index 870a1c7d88d..2d21aaa4f7f 100644 --- a/src/tools/clippy/clippy_lints/src/pass_by_ref_or_value.rs +++ b/src/tools/clippy/clippy_lints/src/pass_by_ref_or_value.rs @@ -190,10 +190,10 @@ impl<'tcx> PassByRefOrValue { // Don't lint if an unsafe pointer is created. // TODO: Limit the check only to unsafe pointers to the argument (or part of the argument) // which escape the current function. - if typeck.node_types().iter().any(|(_, &ty)| ty.is_unsafe_ptr()) + if typeck.node_types().items().any(|(_, &ty)| ty.is_unsafe_ptr()) || typeck .adjustments() - .iter() + .items() .flat_map(|(_, a)| a) .any(|a| matches!(a.kind, Adjust::Pointer(PointerCast::UnsafeFnPointer))) { diff --git a/src/tools/clippy/clippy_lints/src/transmute/utils.rs b/src/tools/clippy/clippy_lints/src/transmute/utils.rs index 49d863ec03f..b59d52dfc4d 100644 --- a/src/tools/clippy/clippy_lints/src/transmute/utils.rs +++ b/src/tools/clippy/clippy_lints/src/transmute/utils.rs @@ -46,7 +46,7 @@ fn check_cast<'tcx>(cx: &LateContext<'tcx>, e: &'tcx Expr<'_>, from_ty: Ty<'tcx> let local_def_id = hir_id.owner.def_id; Inherited::build(cx.tcx, local_def_id).enter(|inherited| { - let fn_ctxt = FnCtxt::new(inherited, cx.param_env, hir_id); + let fn_ctxt = FnCtxt::new(inherited, cx.param_env, local_def_id); // If we already have errors, we can't be sure we can pointer cast. assert!( diff --git a/src/tools/compiletest/src/common.rs b/src/tools/compiletest/src/common.rs index a5f5eb447da..3676f69b100 100644 --- a/src/tools/compiletest/src/common.rs +++ b/src/tools/compiletest/src/common.rs @@ -123,6 +123,7 @@ pub enum FailMode { pub enum CompareMode { Polonius, Chalk, + NextSolver, SplitDwarf, SplitDwarfSingle, } @@ -132,6 +133,7 @@ impl CompareMode { match *self { CompareMode::Polonius => "polonius", CompareMode::Chalk => "chalk", + CompareMode::NextSolver => "next-solver", CompareMode::SplitDwarf => "split-dwarf", CompareMode::SplitDwarfSingle => "split-dwarf-single", } @@ -141,6 +143,7 @@ impl CompareMode { match s.as_str() { "polonius" => CompareMode::Polonius, "chalk" => CompareMode::Chalk, + "next-solver" => CompareMode::NextSolver, "split-dwarf" => CompareMode::SplitDwarf, "split-dwarf-single" => CompareMode::SplitDwarfSingle, x => panic!("unknown --compare-mode option: {}", x), diff --git a/src/tools/compiletest/src/header.rs b/src/tools/compiletest/src/header.rs index c5767a79538..dc30e4bb1be 100644 --- a/src/tools/compiletest/src/header.rs +++ b/src/tools/compiletest/src/header.rs @@ -162,6 +162,9 @@ pub struct TestProps { pub stderr_per_bitwidth: bool, // The MIR opt to unit test, if any pub mir_unit_test: Option<String>, + // Whether to tell `rustc` to remap the "src base" directory to a fake + // directory. + pub remap_src_base: bool, } mod directives { @@ -196,6 +199,7 @@ mod directives { pub const INCREMENTAL: &'static str = "incremental"; pub const KNOWN_BUG: &'static str = "known-bug"; pub const MIR_UNIT_TEST: &'static str = "unit-test"; + pub const REMAP_SRC_BASE: &'static str = "remap-src-base"; // This isn't a real directive, just one that is probably mistyped often pub const INCORRECT_COMPILER_FLAGS: &'static str = "compiler-flags"; } @@ -241,6 +245,7 @@ impl TestProps { should_ice: false, stderr_per_bitwidth: false, mir_unit_test: None, + remap_src_base: false, } } @@ -273,6 +278,9 @@ impl TestProps { /// `//[foo]`), then the property is ignored unless `cfg` is /// `Some("foo")`. fn load_from(&mut self, testfile: &Path, cfg: Option<&str>, config: &Config) { + // Mode-dependent defaults. + self.remap_src_base = config.mode == Mode::Ui && !config.suite.contains("rustdoc"); + let mut has_edition = false; if !testfile.is_dir() { let file = File::open(testfile).unwrap(); @@ -426,13 +434,19 @@ impl TestProps { self.known_bug = true; } else { panic!( - "Invalid known-bug value: {known_bug}\nIt requires comma-separated issue references (`#000` or `chalk#000`) or `unknown`." + "Invalid known-bug value: {known_bug}\nIt requires comma-separated issue references (`#000` or `chalk#000`) or `known-bug: unknown`." ); } + } else if config.parse_name_directive(ln, KNOWN_BUG) { + panic!( + "Invalid known-bug attribute, requires comma-separated issue references (`#000` or `chalk#000`) or `known-bug: unknown`." + ); } + config.set_name_value_directive(ln, MIR_UNIT_TEST, &mut self.mir_unit_test, |s| { s.trim().to_string() }); + config.set_name_directive(ln, REMAP_SRC_BASE, &mut self.remap_src_base); }); } @@ -696,6 +710,7 @@ impl Config { match self.compare_mode { Some(CompareMode::Polonius) => name == "compare-mode-polonius", Some(CompareMode::Chalk) => name == "compare-mode-chalk", + Some(CompareMode::NextSolver) => name == "compare-mode-next-solver", Some(CompareMode::SplitDwarf) => name == "compare-mode-split-dwarf", Some(CompareMode::SplitDwarfSingle) => name == "compare-mode-split-dwarf-single", None => false, @@ -725,6 +740,10 @@ impl Config { && matches!(line.as_bytes().get(directive.len()), None | Some(&b' ') | Some(&b':')) } + fn parse_negative_name_directive(&self, line: &str, directive: &str) -> bool { + line.starts_with("no-") && self.parse_name_directive(&line[3..], directive) + } + pub fn parse_name_value_directive(&self, line: &str, directive: &str) -> Option<String> { let colon = directive.len(); if line.starts_with(directive) && line.as_bytes().get(colon) == Some(&b':') { @@ -754,8 +773,17 @@ impl Config { } fn set_name_directive(&self, line: &str, directive: &str, value: &mut bool) { - if !*value { - *value = self.parse_name_directive(line, directive) + match value { + true => { + if self.parse_negative_name_directive(line, directive) { + *value = false; + } + } + false => { + if self.parse_name_directive(line, directive) { + *value = true; + } + } } } diff --git a/src/tools/compiletest/src/read2.rs b/src/tools/compiletest/src/read2.rs index 7640e651744..a5dc6859732 100644 --- a/src/tools/compiletest/src/read2.rs +++ b/src/tools/compiletest/src/read2.rs @@ -110,9 +110,18 @@ impl ProcOutput { fn into_bytes(self) -> Vec<u8> { match self { ProcOutput::Full { bytes, .. } => bytes, - ProcOutput::Abbreviated { mut head, skipped, tail } => { + ProcOutput::Abbreviated { mut head, mut skipped, tail } => { + let mut tail = &*tail; + + // Skip over '{' at the start of the tail, so we don't later wrongfully consider this as json. + // See <https://rust-lang.zulipchat.com/#narrow/stream/182449-t-compiler.2Fhelp/topic/Weird.20CI.20failure/near/321797811> + while tail.get(0) == Some(&b'{') { + tail = &tail[1..]; + skipped += 1; + } + write!(&mut head, "\n\n<<<<<< SKIPPED {} BYTES >>>>>>\n\n", skipped).unwrap(); - head.extend_from_slice(&tail); + head.extend_from_slice(tail); head } } diff --git a/src/tools/compiletest/src/runtest.rs b/src/tools/compiletest/src/runtest.rs index a16ab11e2f9..51c9a27c83d 100644 --- a/src/tools/compiletest/src/runtest.rs +++ b/src/tools/compiletest/src/runtest.rs @@ -44,6 +44,8 @@ use debugger::{check_debugger_output, DebuggerCommands}; #[cfg(test)] mod tests; +const FAKE_SRC_BASE: &str = "fake-test-src-base"; + #[cfg(windows)] fn disable_error_reporting<F: FnOnce() -> R, R>(f: F) -> R { use std::sync::Mutex; @@ -1328,12 +1330,19 @@ impl<'test> TestCx<'test> { return; } + // On Windows, translate all '\' path separators to '/' + let file_name = format!("{}", self.testpaths.file.display()).replace(r"\", "/"); + // On Windows, keep all '\' path separators to match the paths reported in the JSON output // from the compiler - let os_file_name = self.testpaths.file.display().to_string(); - - // on windows, translate all '\' path separators to '/' - let file_name = format!("{}", self.testpaths.file.display()).replace(r"\", "/"); + let diagnostic_file_name = if self.props.remap_src_base { + let mut p = PathBuf::from(FAKE_SRC_BASE); + p.push(&self.testpaths.relative_dir); + p.push(self.testpaths.file.file_name().unwrap()); + p.display().to_string() + } else { + self.testpaths.file.display().to_string() + }; // If the testcase being checked contains at least one expected "help" // message, then we'll ensure that all "help" messages are expected. @@ -1343,7 +1352,7 @@ impl<'test> TestCx<'test> { let expect_note = expected_errors.iter().any(|ee| ee.kind == Some(ErrorKind::Note)); // Parse the JSON output from the compiler and extract out the messages. - let actual_errors = json::parse_output(&os_file_name, &proc_res.stderr, proc_res); + let actual_errors = json::parse_output(&diagnostic_file_name, &proc_res.stderr, proc_res); let mut unexpected = Vec::new(); let mut found = vec![false; expected_errors.len()]; for actual_error in &actual_errors { @@ -1970,6 +1979,14 @@ impl<'test> TestCx<'test> { } } + if self.props.remap_src_base { + rustc.arg(format!( + "--remap-path-prefix={}={}", + self.config.src_base.display(), + FAKE_SRC_BASE, + )); + } + match emit { Emit::None => {} Emit::Metadata if is_rustdoc => {} @@ -2013,6 +2030,9 @@ impl<'test> TestCx<'test> { Some(CompareMode::Chalk) => { rustc.args(&["-Ztrait-solver=chalk"]); } + Some(CompareMode::NextSolver) => { + rustc.args(&["-Ztrait-solver=next"]); + } Some(CompareMode::SplitDwarf) if self.config.target.contains("windows") => { rustc.args(&["-Csplit-debuginfo=unpacked", "-Zunstable-options"]); } @@ -3545,6 +3565,14 @@ impl<'test> TestCx<'test> { let parent_dir = self.testpaths.file.parent().unwrap(); normalize_path(parent_dir, "$DIR"); + if self.props.remap_src_base { + let mut remapped_parent_dir = PathBuf::from(FAKE_SRC_BASE); + if self.testpaths.relative_dir != Path::new("") { + remapped_parent_dir.push(&self.testpaths.relative_dir); + } + normalize_path(&remapped_parent_dir, "$DIR"); + } + let source_bases = &[ // Source base on the current filesystem (calculated as parent of `tests/$suite`): Some(self.config.src_base.parent().unwrap().parent().unwrap().into()), diff --git a/src/tools/compiletest/src/util.rs b/src/tools/compiletest/src/util.rs index 6c63b760ff6..ff7e8df9878 100644 --- a/src/tools/compiletest/src/util.rs +++ b/src/tools/compiletest/src/util.rs @@ -23,6 +23,7 @@ pub const ASAN_SUPPORTED_TARGETS: &[&str] = &[ "x86_64-linux-android", "x86_64-unknown-freebsd", "x86_64-unknown-linux-gnu", + "s390x-unknown-linux-gnu", ]; // FIXME(rcvalle): More targets are likely supported. @@ -50,10 +51,15 @@ pub const LSAN_SUPPORTED_TARGETS: &[&str] = &[ "aarch64-unknown-linux-gnu", "x86_64-apple-darwin", "x86_64-unknown-linux-gnu", + "s390x-unknown-linux-gnu", ]; -pub const MSAN_SUPPORTED_TARGETS: &[&str] = - &["aarch64-unknown-linux-gnu", "x86_64-unknown-freebsd", "x86_64-unknown-linux-gnu"]; +pub const MSAN_SUPPORTED_TARGETS: &[&str] = &[ + "aarch64-unknown-linux-gnu", + "x86_64-unknown-freebsd", + "x86_64-unknown-linux-gnu", + "s390x-unknown-linux-gnu", +]; pub const TSAN_SUPPORTED_TARGETS: &[&str] = &[ "aarch64-apple-darwin", @@ -61,6 +67,7 @@ pub const TSAN_SUPPORTED_TARGETS: &[&str] = &[ "x86_64-apple-darwin", "x86_64-unknown-freebsd", "x86_64-unknown-linux-gnu", + "s390x-unknown-linux-gnu", ]; pub const HWASAN_SUPPORTED_TARGETS: &[&str] = diff --git a/src/tools/rustfmt/.github/workflows/check_diff.yml b/src/tools/rustfmt/.github/workflows/check_diff.yml new file mode 100644 index 00000000000..8bfb5834519 --- /dev/null +++ b/src/tools/rustfmt/.github/workflows/check_diff.yml @@ -0,0 +1,33 @@ +name: Diff Check +on: + workflow_dispatch: + inputs: + clone_url: + description: 'Git url of a rustfmt fork to compare against the latest master rustfmt' + required: true + branch_name: + description: 'Name of the feature branch on the forked repo' + required: true + commit_hash: + description: 'Optional commit hash from the feature branch' + required: false + rustfmt_configs: + description: 'Optional comma separated list of rustfmt config options to pass when running the feature branch' + required: false + +jobs: + diff_check: + runs-on: ubuntu-latest + + steps: + - name: checkout + uses: actions/checkout@v3 + + - name: install rustup + run: | + curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs > rustup-init.sh + sh rustup-init.sh -y --default-toolchain none + rustup target add x86_64-unknown-linux-gnu + + - name: check diff + run: bash ${GITHUB_WORKSPACE}/ci/check_diff.sh ${{ github.event.inputs.clone_url }} ${{ github.event.inputs.branch_name }} ${{ github.event.inputs.commit_hash }} ${{ github.event.inputs.rustfmt_configs }} diff --git a/src/tools/rustfmt/.github/workflows/integration.yml b/src/tools/rustfmt/.github/workflows/integration.yml index 4d8899b434b..314ce0e84c6 100644 --- a/src/tools/rustfmt/.github/workflows/integration.yml +++ b/src/tools/rustfmt/.github/workflows/integration.yml @@ -27,7 +27,6 @@ jobs: tempdir, futures-rs, rust-clippy, - failure, ] include: # Allowed Failures @@ -63,9 +62,6 @@ jobs: # Original comment was: temporal build failure due to breaking changes in the nightly compiler - integration: rust-semverver allow-failure: true - # Can be moved back to include section after https://github.com/rust-lang-nursery/failure/pull/298 is merged - - integration: failure - allow-failure: true steps: - name: checkout diff --git a/src/tools/rustfmt/CHANGELOG.md b/src/tools/rustfmt/CHANGELOG.md index 0c1893bf8c3..60f961fa12a 100644 --- a/src/tools/rustfmt/CHANGELOG.md +++ b/src/tools/rustfmt/CHANGELOG.md @@ -2,6 +2,32 @@ ## [Unreleased] +## [1.5.2] 2023-01-24 + +### Fixed + +- Resolve issue when comments are found within const generic defaults in unit structs [#5668](https://github.com/rust-lang/rustfmt/issues/5668) +- Resolve issue when block comments are found within trait generics [#5358](https://github.com/rust-lang/rustfmt/issues/5358) +- Correctly handle alignment of comments containing unicode characters [#5504](https://github.com/rust-lang/rustfmt/issues/5504) +- Properly indent a single generic bound that requires being written across multiple lines [#4689](https://github.com/rust-lang/rustfmt/issues/4689) (n.b. this change is version gated and will only appear when the `version` configuration option is set to `Two`) + +### Changed + +- Renamed `fn_args_layout` configuration option to `fn_params_layout` [#4149](https://github.com/rust-lang/rustfmt/issues/4149). Note that `fn_args_layout` has only been soft deprecated: `fn_args_layout` will continue to work without issue, but rustfmt will display a warning to encourage users to switch to the new name + +### Added + +- New configuration option (`skip_macro_invocations`)[https://rust-lang.github.io/rustfmt/?version=master&search=#skip_macro_invocations] [#5347](https://github.com/rust-lang/rustfmt/pull/5347) that can be used to globally define a single enumerated list of macro calls that rustfmt should skip formatting. rustfmt [currently also supports this via a custom tool attribute](https://github.com/rust-lang/rustfmt#tips), however, these cannot be used in all contexts because [custom inner attributes are unstable](https://github.com/rust-lang/rust/issues/54726) + +### Misc + +- rustfmt now internally supports the ability to have both stable and unstable variants of a configuration option [#5378](https://github.com/rust-lang/rustfmt/issues/5378). This ability will allow the rustfmt team to make certain configuration options available on stable toolchains more quickly because we no longer have to wait for _every_ variant to be stable-ready before stabilizing _any_ variant. + +### Install/Download Options +- **rustup (nightly)** - nightly-2023-01-24 +- **GitHub Release Binaries** - [Release v1.5.2](https://github.com/rust-lang/rustfmt/releases/tag/v1.5.2) +- **Build from source** - [Tag v1.5.2](https://github.com/rust-lang/rustfmt/tree/v1.5.2), see instructions for how to [install rustfmt from source][install-from-source] + ## [1.5.1] 2022-06-24 **N.B** A bug was introduced in v1.5.0/nightly-2022-06-15 which modified formatting. If you happened to run rustfmt over your code with one of those ~10 nightlies it's possible you may have seen formatting changes, and you may see additional changes after this fix since that bug has now been reverted. @@ -840,7 +866,7 @@ from formatting an attribute #3665 - Fix formatting of raw string literals #2983 - Handle chain with try operators with spaces #2986 - Use correct shape in Visual tuple rewriting #2987 -- Impove formatting of arguments with `visual_style = "Visual"` option #2988 +- Improve formatting of arguments with `visual_style = "Visual"` option #2988 - Change `print_diff` to output the correct line number 992b179 - Propagate errors about failing to rewrite a macro 6f318e3 - Handle formatting of long function signature #3010 diff --git a/src/tools/rustfmt/Cargo.lock b/src/tools/rustfmt/Cargo.lock index 311df226da1..24166d51c51 100644 --- a/src/tools/rustfmt/Cargo.lock +++ b/src/tools/rustfmt/Cargo.lock @@ -476,7 +476,7 @@ checksum = "fc71d2faa173b74b232dedc235e3ee1696581bb132fc116fa3626d6151a1a8fb" [[package]] name = "rustfmt-config_proc_macro" -version = "0.2.0" +version = "0.3.0" dependencies = [ "proc-macro2", "quote", @@ -485,7 +485,7 @@ dependencies = [ [[package]] name = "rustfmt-nightly" -version = "1.5.1" +version = "1.5.2" dependencies = [ "annotate-snippets", "anyhow", diff --git a/src/tools/rustfmt/Cargo.toml b/src/tools/rustfmt/Cargo.toml index 7a4e02d69ed..87ce59d0217 100644 --- a/src/tools/rustfmt/Cargo.toml +++ b/src/tools/rustfmt/Cargo.toml @@ -1,7 +1,7 @@ [package] name = "rustfmt-nightly" -version = "1.5.1" +version = "1.5.2" description = "Tool to find and fix Rust formatting issues" repository = "https://github.com/rust-lang/rustfmt" readme = "README.md" @@ -57,7 +57,7 @@ unicode-segmentation = "1.9" unicode-width = "0.1" unicode_categories = "0.1" -rustfmt-config_proc_macro = { version = "0.2", path = "config_proc_macro" } +rustfmt-config_proc_macro = { version = "0.3", path = "config_proc_macro" } # A noop dependency that changes in the Rust repository, it's a bit of a hack. # See the `src/tools/rustc-workspace-hack/README.md` file in `rust-lang/rust` diff --git a/src/tools/rustfmt/Configurations.md b/src/tools/rustfmt/Configurations.md index 8b96b9d3689..49e7e4e6489 100644 --- a/src/tools/rustfmt/Configurations.md +++ b/src/tools/rustfmt/Configurations.md @@ -1,6 +1,6 @@ # Configuring Rustfmt -Rustfmt is designed to be very configurable. You can create a TOML file called `rustfmt.toml` or `.rustfmt.toml`, place it in the project or any other parent directory and it will apply the options in that file. If none of these directories contain such a file, both your home directory and a directory called `rustfmt` in your [global config directory](https://docs.rs/dirs/1.0.4/dirs/fn.config_dir.html) (e.g. `.config/rustfmt/`) are checked as well. +Rustfmt is designed to be very configurable. You can create a TOML file called `rustfmt.toml` or `.rustfmt.toml`, place it in the project or any other parent directory and it will apply the options in that file. If none of these directories contain such a file, both your home directory and a directory called `rustfmt` in your [global config directory](https://docs.rs/dirs/4.0.0/dirs/fn.config_dir.html) (e.g. `.config/rustfmt/`) are checked as well. A possible content of `rustfmt.toml` or `.rustfmt.toml` might look like this: @@ -425,7 +425,7 @@ fn example() { ## `comment_width` -Maximum length of comments. No effect unless`wrap_comments = true`. +Maximum length of comments. No effect unless `wrap_comments = true`. - **Default value**: `80` - **Possible values**: any positive integer @@ -589,7 +589,7 @@ doesn't get ignored when aligning. #### `0` (default): ```rust -enum Bar { +enum Foo { A = 0, Bb = 1, RandomLongVariantGoesHere = 10, @@ -645,7 +645,8 @@ trailing whitespaces. ## `fn_args_layout` -Control the layout of arguments in a function +This option is deprecated and has been renamed to `fn_params_layout` to better communicate that +it affects the layout of parameters in function signatures. - **Default value**: `"Tall"` - **Possible values**: `"Compressed"`, `"Tall"`, `"Vertical"` @@ -753,6 +754,8 @@ trait Lorem { } ``` +See also [`fn_params_layout`](#fn_params_layout) + ## `fn_call_width` Maximum width of the args of a function call before falling back to vertical formatting. @@ -765,6 +768,117 @@ By default this option is set as a percentage of [`max_width`](#max_width) provi See also [`max_width`](#max_width) and [`use_small_heuristics`](#use_small_heuristics) +## `fn_params_layout` + +Control the layout of parameters in function signatures. + +- **Default value**: `"Tall"` +- **Possible values**: `"Compressed"`, `"Tall"`, `"Vertical"` +- **Stable**: Yes + +#### `"Tall"` (default): + +```rust +trait Lorem { + fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet); + + fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet) { + // body + } + + fn lorem( + ipsum: Ipsum, + dolor: Dolor, + sit: Sit, + amet: Amet, + consectetur: Consectetur, + adipiscing: Adipiscing, + elit: Elit, + ); + + fn lorem( + ipsum: Ipsum, + dolor: Dolor, + sit: Sit, + amet: Amet, + consectetur: Consectetur, + adipiscing: Adipiscing, + elit: Elit, + ) { + // body + } +} +``` + +#### `"Compressed"`: + +```rust +trait Lorem { + fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet); + + fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet) { + // body + } + + fn lorem( + ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet, consectetur: Consectetur, + adipiscing: Adipiscing, elit: Elit, + ); + + fn lorem( + ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet, consectetur: Consectetur, + adipiscing: Adipiscing, elit: Elit, + ) { + // body + } +} +``` + +#### `"Vertical"`: + +```rust +trait Lorem { + fn lorem( + ipsum: Ipsum, + dolor: Dolor, + sit: Sit, + amet: Amet, + ); + + fn lorem( + ipsum: Ipsum, + dolor: Dolor, + sit: Sit, + amet: Amet, + ) { + // body + } + + fn lorem( + ipsum: Ipsum, + dolor: Dolor, + sit: Sit, + amet: Amet, + consectetur: Consectetur, + adipiscing: Adipiscing, + elit: Elit, + ); + + fn lorem( + ipsum: Ipsum, + dolor: Dolor, + sit: Sit, + amet: Amet, + consectetur: Consectetur, + adipiscing: Adipiscing, + elit: Elit, + ) { + // body + } +} +``` + + ## `fn_single_line` Put single-expression functions on a single line @@ -1014,6 +1128,62 @@ macro_rules! foo { See also [`format_macro_matchers`](#format_macro_matchers). +## `skip_macro_invocations` + +Skip formatting the bodies of macro invocations with the following names. + +rustfmt will not format any macro invocation for macros with names set in this list. +Including the special value "*" will prevent any macro invocations from being formatted. + +Note: This option does not have any impact on how rustfmt formats macro definitions. + +- **Default value**: `[]` +- **Possible values**: a list of macro name idents, `["name_0", "name_1", ..., "*"]` +- **Stable**: No (tracking issue: [#5346](https://github.com/rust-lang/rustfmt/issues/5346)) + +#### `[]` (default): + +rustfmt will follow its standard approach to formatting macro invocations. + +No macro invocations will be skipped based on their name. More information about rustfmt's standard macro invocation formatting behavior can be found in [#5437](https://github.com/rust-lang/rustfmt/discussions/5437). + +```rust +lorem!( + const _: u8 = 0; +); + +ipsum!( + const _: u8 = 0; +); +``` + +#### `["lorem"]`: + +The named macro invocations will be skipped. + +```rust +lorem!( + const _: u8 = 0; +); + +ipsum!( + const _: u8 = 0; +); +``` + +#### `["*"]`: + +The special selector `*` will skip all macro invocations. + +```rust +lorem!( + const _: u8 = 0; +); + +ipsum!( + const _: u8 = 0; +); +``` ## `format_strings` @@ -1687,13 +1857,16 @@ pub enum Foo {} ## `imports_granularity` -How imports should be grouped into `use` statements. Imports will be merged or split to the configured level of granularity. +Controls how imports are structured in `use` statements. Imports will be merged or split to the configured level of granularity. + +Similar to other `import` related configuration options, this option operates within the bounds of user-defined groups of imports. See [`group_imports`](#group_imports) for more information on import groups. + +Note that rustfmt will not modify the granularity of imports containing comments if doing so could potentially lose or misplace said comments. - **Default value**: `Preserve` - **Possible values**: `Preserve`, `Crate`, `Module`, `Item`, `One` - **Stable**: No (tracking issue: [#4991](https://github.com/rust-lang/rustfmt/issues/4991)) -Note that rustfmt will not modify the granularity of imports containing comments if doing so could potentially lose or misplace said comments. #### `Preserve` (default): diff --git a/src/tools/rustfmt/Processes.md b/src/tools/rustfmt/Processes.md index f763b5714ce..61abc87eec9 100644 --- a/src/tools/rustfmt/Processes.md +++ b/src/tools/rustfmt/Processes.md @@ -2,7 +2,7 @@ This document outlines processes regarding management of rustfmt. # Stabilising an Option -In this Section, we describe how to stabilise an option of the rustfmt's configration. +In this Section, we describe how to stabilise an option of the rustfmt's configuration. ## Conditions diff --git a/src/tools/rustfmt/ci/build_and_test.bat b/src/tools/rustfmt/ci/build_and_test.bat index ef41017783f..69dae1fff7b 100755 --- a/src/tools/rustfmt/ci/build_and_test.bat +++ b/src/tools/rustfmt/ci/build_and_test.bat @@ -1,4 +1,5 @@ set "RUSTFLAGS=-D warnings" +set "RUSTFMT_CI=1" :: Print version information rustc -Vv || exit /b 1 diff --git a/src/tools/rustfmt/ci/build_and_test.sh b/src/tools/rustfmt/ci/build_and_test.sh index 8fa0f67b0d0..94991853263 100755 --- a/src/tools/rustfmt/ci/build_and_test.sh +++ b/src/tools/rustfmt/ci/build_and_test.sh @@ -3,6 +3,7 @@ set -euo pipefail export RUSTFLAGS="-D warnings" +export RUSTFMT_CI=1 # Print version information rustc -Vv diff --git a/src/tools/rustfmt/ci/check_diff.sh b/src/tools/rustfmt/ci/check_diff.sh new file mode 100755 index 00000000000..062c2dd8673 --- /dev/null +++ b/src/tools/rustfmt/ci/check_diff.sh @@ -0,0 +1,199 @@ +#!/bin/bash + +function print_usage() { + echo "usage check_diff REMOTE_REPO FEATURE_BRANCH [COMMIT_HASH] [OPTIONAL_RUSTFMT_CONFIGS]" +} + +if [ $# -le 1 ]; then + print_usage + exit 1 +fi + +REMOTE_REPO=$1 +FEATURE_BRANCH=$2 +OPTIONAL_COMMIT_HASH=$3 +OPTIONAL_RUSTFMT_CONFIGS=$4 + +# OUTPUT array used to collect all the status of running diffs on various repos +STATUSES=() + +# Clone a git repository and cd into it. +# +# Parameters: +# $1: git clone url +# $2: directory where the repo should be cloned +function clone_repo() { + GIT_TERMINAL_PROMPT=0 git clone --quiet $1 --depth 1 $2 && cd $2 +} + +# Initialize Git submoduels for the repo. +# +# Parameters +# $1: list of directories to initialize +function init_submodules() { + git submodule update --init $1 +} + +# Run rusfmt with the --check flag to see if a diff is produced. +# +# Parameters: +# $1: Path to a rustfmt binary +# $2: Output file path for the diff +# $3: Any additional configuration options to pass to rustfmt +# +# Globlas: +# $OPTIONAL_RUSTFMT_CONFIGS: Optional configs passed to the script from $4 +function create_diff() { + local config; + if [ -z "$3" ]; then + config="--config=error_on_line_overflow=false,error_on_unformatted=false" + else + config="--config=error_on_line_overflow=false,error_on_unformatted=false,$OPTIONAL_RUSTFMT_CONFIGS" + fi + + for i in `find . | grep "\.rs$"` + do + $1 --unstable-features --skip-children --check --color=always $config $i >> $2 2>/dev/null + done +} + +# Run the master rustfmt binary and the feature branch binary in the current directory and compare the diffs +# +# Parameters +# $1: Name of the repository (used for logging) +# +# Globlas: +# $RUSFMT_BIN: Path to the rustfmt master binary. Created when running `compile_rustfmt` +# $FEATURE_BIN: Path to the rustfmt feature binary. Created when running `compile_rustfmt` +# $OPTIONAL_RUSTFMT_CONFIGS: Optional configs passed to the script from $4 +function check_diff() { + echo "running rustfmt (master) on $1" + create_diff $RUSFMT_BIN rustfmt_diff.txt + + echo "running rustfmt (feature) on $1" + create_diff $FEATURE_BIN feature_diff.txt $OPTIONAL_RUSTFMT_CONFIGS + + echo "checking diff" + local diff; + # we don't add color to the diff since we added color when running rustfmt --check. + # tail -n + 6 removes the git diff header info + # cut -c 2- removes the leading diff characters("+","-"," ") from running git diff. + # Again, the diff output we care about was already added when we ran rustfmt --check + diff=$( + git --no-pager diff --color=never \ + --unified=0 --no-index rustfmt_diff.txt feature_diff.txt 2>&1 | tail -n +6 | cut -c 2- + ) + + if [ -z "$diff" ]; then + echo "no diff detected between rustfmt and the feture branch" + return 0 + else + echo "$diff" + return 1 + fi +} + +# Compiles and produces two rustfmt binaries. +# One for the current master, and another for the feature branch +# +# Parameters: +# $1: Directory where rustfmt will be cloned +# +# Globlas: +# $REMOTE_REPO: Clone URL to the rustfmt fork that we want to test +# $FEATURE_BRANCH: Name of the feature branch +# $OPTIONAL_COMMIT_HASH: Optional commit hash that will be checked out if provided +function compile_rustfmt() { + RUSTFMT_REPO="https://github.com/rust-lang/rustfmt.git" + clone_repo $RUSTFMT_REPO $1 + git remote add feature $REMOTE_REPO + git fetch feature $FEATURE_BRANCH + + cargo build --release --bin rustfmt && cp target/release/rustfmt $1/rustfmt + if [ -z "$OPTIONAL_COMMIT_HASH" ]; then + git switch $FEATURE_BRANCH + else + git switch $OPTIONAL_COMMIT_HASH --detach + fi + cargo build --release --bin rustfmt && cp target/release/rustfmt $1/feature_rustfmt + RUSFMT_BIN=$1/rustfmt + FEATURE_BIN=$1/feature_rustfmt +} + +# Check the diff for running rustfmt and the feature branch on all the .rs files in the repo. +# +# Parameters +# $1: Clone URL for the repo +# $2: Name of the repo (mostly used for logging) +# $3: Path to any submodules that should be initialized +function check_repo() { + WORKDIR=$(pwd) + REPO_URL=$1 + REPO_NAME=$2 + SUBMODULES=$3 + + local tmp_dir; + tmp_dir=$(mktemp -d -t $REPO_NAME-XXXXXXXX) + clone_repo $REPO_URL $tmp_dir + + if [ ! -z "$SUBMODULES" ]; then + init_submodules $SUBMODULES + fi + + check_diff $REPO_NAME + # append the status of running `check_diff` to the STATUSES array + STATUSES+=($?) + + echo "removing tmp_dir $tmp_dir" + rm -rf $tmp_dir + cd $WORKDIR +} + +function main() { + tmp_dir=$(mktemp -d -t rustfmt-XXXXXXXX) + echo Created tmp_dir $tmp_dir + + compile_rustfmt $tmp_dir + + # run checks + check_repo "https://github.com/rust-lang/rust.git" rust-lang-rust + check_repo "https://github.com/rust-lang/cargo.git" cargo + check_repo "https://github.com/rust-lang/miri.git" miri + check_repo "https://github.com/rust-lang/rust-analyzer.git" rust-analyzer + check_repo "https://github.com/bitflags/bitflags.git" bitflags + check_repo "https://github.com/rust-lang/log.git" log + check_repo "https://github.com/rust-lang/mdBook.git" mdBook + check_repo "https://github.com/rust-lang/packed_simd.git" packed_simd + check_repo "https://github.com/rust-lang/rust-semverver.git" check_repo + check_repo "https://github.com/Stebalien/tempfile.git" tempfile + check_repo "https://github.com/rust-lang/futures-rs.git" futures-rs + check_repo "https://github.com/dtolnay/anyhow.git" anyhow + check_repo "https://github.com/dtolnay/thiserror.git" thiserror + check_repo "https://github.com/dtolnay/syn.git" syn + check_repo "https://github.com/serde-rs/serde.git" serde + check_repo "https://github.com/rust-lang/rustlings.git" rustlings + check_repo "https://github.com/rust-lang/rustup.git" rustup + check_repo "https://github.com/SergioBenitez/Rocket.git" Rocket + check_repo "https://github.com/rustls/rustls.git" rustls + check_repo "https://github.com/rust-lang/rust-bindgen.git" rust-bindgen + check_repo "https://github.com/hyperium/hyper.git" hyper + check_repo "https://github.com/actix/actix.git" actix + check_repo "https://github.com/denoland/deno.git" denoland_deno + + # cleanup temp dir + echo removing tmp_dir $tmp_dir + rm -rf $tmp_dir + + # figure out the exit code + for status in ${STATUSES[@]} + do + if [ $status -eq 1 ]; then + echo "formatting diff found 💔" + return 1 + fi + done + + echo "no diff found 😊" +} + +main diff --git a/src/tools/rustfmt/ci/integration.sh b/src/tools/rustfmt/ci/integration.sh index 562d5d70c70..19d502bc5c7 100755 --- a/src/tools/rustfmt/ci/integration.sh +++ b/src/tools/rustfmt/ci/integration.sh @@ -91,14 +91,28 @@ case ${INTEGRATION} in cd - ;; crater) - git clone --depth=1 https://github.com/rust-lang-nursery/${INTEGRATION}.git + git clone --depth=1 https://github.com/rust-lang/${INTEGRATION}.git cd ${INTEGRATION} show_head check_fmt_with_lib_tests cd - ;; + bitflags) + git clone --depth=1 https://github.com/bitflags/${INTEGRATION}.git + cd ${INTEGRATION} + show_head + check_fmt_with_all_tests + cd - + ;; + error-chain | tempdir) + git clone --depth=1 https://github.com/rust-lang-deprecated/${INTEGRATION}.git + cd ${INTEGRATION} + show_head + check_fmt_with_all_tests + cd - + ;; *) - git clone --depth=1 https://github.com/rust-lang-nursery/${INTEGRATION}.git + git clone --depth=1 https://github.com/rust-lang/${INTEGRATION}.git cd ${INTEGRATION} show_head check_fmt_with_all_tests diff --git a/src/tools/rustfmt/config_proc_macro/Cargo.lock b/src/tools/rustfmt/config_proc_macro/Cargo.lock index ecf561f28fb..49f2f72a8d2 100644 --- a/src/tools/rustfmt/config_proc_macro/Cargo.lock +++ b/src/tools/rustfmt/config_proc_macro/Cargo.lock @@ -22,7 +22,7 @@ dependencies = [ [[package]] name = "rustfmt-config_proc_macro" -version = "0.2.0" +version = "0.3.0" dependencies = [ "proc-macro2", "quote", diff --git a/src/tools/rustfmt/config_proc_macro/Cargo.toml b/src/tools/rustfmt/config_proc_macro/Cargo.toml index a41b3a5e6bf..d10d0469cc4 100644 --- a/src/tools/rustfmt/config_proc_macro/Cargo.toml +++ b/src/tools/rustfmt/config_proc_macro/Cargo.toml @@ -1,6 +1,6 @@ [package] name = "rustfmt-config_proc_macro" -version = "0.2.0" +version = "0.3.0" edition = "2018" description = "A collection of procedural macros for rustfmt" license = "Apache-2.0/MIT" diff --git a/src/tools/rustfmt/config_proc_macro/src/attrs.rs b/src/tools/rustfmt/config_proc_macro/src/attrs.rs index 0baba046f9e..dd18ff572cb 100644 --- a/src/tools/rustfmt/config_proc_macro/src/attrs.rs +++ b/src/tools/rustfmt/config_proc_macro/src/attrs.rs @@ -1,8 +1,10 @@ //! This module provides utilities for handling attributes on variants -//! of `config_type` enum. Currently there are two types of attributes -//! that could appear on the variants of `config_type` enum: `doc_hint` -//! and `value`. Both comes in the form of name-value pair whose value -//! is string literal. +//! of `config_type` enum. Currently there are the following attributes +//! that could appear on the variants of `config_type` enum: +//! +//! - `doc_hint`: name-value pair whose value is string literal +//! - `value`: name-value pair whose value is string literal +//! - `unstable_variant`: name only /// Returns the value of the first `doc_hint` attribute in the given slice or /// `None` if `doc_hint` attribute is not available. @@ -27,6 +29,11 @@ pub fn find_config_value(attrs: &[syn::Attribute]) -> Option<String> { attrs.iter().filter_map(config_value).next() } +/// Returns `true` if the there is at least one `unstable` attribute in the given slice. +pub fn any_unstable_variant(attrs: &[syn::Attribute]) -> bool { + attrs.iter().any(is_unstable_variant) +} + /// Returns a string literal value if the given attribute is `value` /// attribute or `None` otherwise. pub fn config_value(attr: &syn::Attribute) -> Option<String> { @@ -38,6 +45,11 @@ pub fn is_config_value(attr: &syn::Attribute) -> bool { is_attr_name_value(attr, "value") } +/// Returns `true` if the given attribute is an `unstable` attribute. +pub fn is_unstable_variant(attr: &syn::Attribute) -> bool { + is_attr_path(attr, "unstable_variant") +} + fn is_attr_name_value(attr: &syn::Attribute, name: &str) -> bool { attr.parse_meta().ok().map_or(false, |meta| match meta { syn::Meta::NameValue(syn::MetaNameValue { ref path, .. }) if path.is_ident(name) => true, @@ -45,6 +57,13 @@ fn is_attr_name_value(attr: &syn::Attribute, name: &str) -> bool { }) } +fn is_attr_path(attr: &syn::Attribute, name: &str) -> bool { + attr.parse_meta().ok().map_or(false, |meta| match meta { + syn::Meta::Path(path) if path.is_ident(name) => true, + _ => false, + }) +} + fn get_name_value_str_lit(attr: &syn::Attribute, name: &str) -> Option<String> { attr.parse_meta().ok().and_then(|meta| match meta { syn::Meta::NameValue(syn::MetaNameValue { diff --git a/src/tools/rustfmt/config_proc_macro/src/item_enum.rs b/src/tools/rustfmt/config_proc_macro/src/item_enum.rs index dcee77a8549..731a7ea0607 100644 --- a/src/tools/rustfmt/config_proc_macro/src/item_enum.rs +++ b/src/tools/rustfmt/config_proc_macro/src/item_enum.rs @@ -1,5 +1,6 @@ use proc_macro2::TokenStream; -use quote::quote; +use quote::{quote, quote_spanned}; +use syn::spanned::Spanned; use crate::attrs::*; use crate::utils::*; @@ -47,12 +48,23 @@ fn process_variant(variant: &syn::Variant) -> TokenStream { let metas = variant .attrs .iter() - .filter(|attr| !is_doc_hint(attr) && !is_config_value(attr)); + .filter(|attr| !is_doc_hint(attr) && !is_config_value(attr) && !is_unstable_variant(attr)); let attrs = fold_quote(metas, |meta| quote!(#meta)); let syn::Variant { ident, fields, .. } = variant; quote!(#attrs #ident #fields) } +/// Return the correct syntax to pattern match on the enum variant, discarding all +/// internal field data. +fn fields_in_variant(variant: &syn::Variant) -> TokenStream { + // With thanks to https://stackoverflow.com/a/65182902 + match &variant.fields { + syn::Fields::Unnamed(_) => quote_spanned! { variant.span() => (..) }, + syn::Fields::Unit => quote_spanned! { variant.span() => }, + syn::Fields::Named(_) => quote_spanned! { variant.span() => {..} }, + } +} + fn impl_doc_hint(ident: &syn::Ident, variants: &Variants) -> TokenStream { let doc_hint = variants .iter() @@ -60,12 +72,26 @@ fn impl_doc_hint(ident: &syn::Ident, variants: &Variants) -> TokenStream { .collect::<Vec<_>>() .join("|"); let doc_hint = format!("[{}]", doc_hint); + + let variant_stables = variants + .iter() + .map(|v| (&v.ident, fields_in_variant(&v), !unstable_of_variant(v))); + let match_patterns = fold_quote(variant_stables, |(v, fields, stable)| { + quote! { + #ident::#v #fields => #stable, + } + }); quote! { use crate::config::ConfigType; impl ConfigType for #ident { fn doc_hint() -> String { #doc_hint.to_owned() } + fn stable_variant(&self) -> bool { + match self { + #match_patterns + } + } } } } @@ -123,13 +149,21 @@ fn impl_from_str(ident: &syn::Ident, variants: &Variants) -> TokenStream { } fn doc_hint_of_variant(variant: &syn::Variant) -> String { - find_doc_hint(&variant.attrs).unwrap_or(variant.ident.to_string()) + let mut text = find_doc_hint(&variant.attrs).unwrap_or(variant.ident.to_string()); + if unstable_of_variant(&variant) { + text.push_str(" (unstable)") + }; + text } fn config_value_of_variant(variant: &syn::Variant) -> String { find_config_value(&variant.attrs).unwrap_or(variant.ident.to_string()) } +fn unstable_of_variant(variant: &syn::Variant) -> bool { + any_unstable_variant(&variant.attrs) +} + fn impl_serde(ident: &syn::Ident, variants: &Variants) -> TokenStream { let arms = fold_quote(variants.iter(), |v| { let v_ident = &v.ident; diff --git a/src/tools/rustfmt/config_proc_macro/src/lib.rs b/src/tools/rustfmt/config_proc_macro/src/lib.rs index e772c53f423..0c54c132c97 100644 --- a/src/tools/rustfmt/config_proc_macro/src/lib.rs +++ b/src/tools/rustfmt/config_proc_macro/src/lib.rs @@ -69,3 +69,16 @@ pub fn stable_only_test(_args: TokenStream, input: TokenStream) -> TokenStream { TokenStream::from_str("").unwrap() } } + +/// Used to conditionally output the TokenStream for tests that should be run as part of rustfmts +/// test suite, but should be ignored when running in the rust-lang/rust test suite. +#[proc_macro_attribute] +pub fn rustfmt_only_ci_test(_args: TokenStream, input: TokenStream) -> TokenStream { + if option_env!("RUSTFMT_CI").is_some() { + input + } else { + let mut token_stream = TokenStream::from_str("#[ignore]").unwrap(); + token_stream.extend(input); + token_stream + } +} diff --git a/src/tools/rustfmt/config_proc_macro/tests/smoke.rs b/src/tools/rustfmt/config_proc_macro/tests/smoke.rs index 940a8a0c251..c8a83e39c9e 100644 --- a/src/tools/rustfmt/config_proc_macro/tests/smoke.rs +++ b/src/tools/rustfmt/config_proc_macro/tests/smoke.rs @@ -1,6 +1,7 @@ pub mod config { pub trait ConfigType: Sized { fn doc_hint() -> String; + fn stable_variant(&self) -> bool; } } diff --git a/src/tools/rustfmt/rust-toolchain b/src/tools/rustfmt/rust-toolchain index 2640a9e0ecc..22283b3d620 100644 --- a/src/tools/rustfmt/rust-toolchain +++ b/src/tools/rustfmt/rust-toolchain @@ -1,3 +1,3 @@ [toolchain] -channel = "nightly-2022-06-21" -components = ["rustc-dev"] +channel = "nightly-2023-01-24" +components = ["llvm-tools", "rustc-dev"] diff --git a/src/tools/rustfmt/src/attr.rs b/src/tools/rustfmt/src/attr.rs index c503eeeb9b3..5648e1254ed 100644 --- a/src/tools/rustfmt/src/attr.rs +++ b/src/tools/rustfmt/src/attr.rs @@ -336,7 +336,7 @@ impl Rewrite for ast::Attribute { } else { let should_skip = self .ident() - .map(|s| context.skip_context.skip_attribute(s.name.as_str())) + .map(|s| context.skip_context.attributes.skip(s.name.as_str())) .unwrap_or(false); let prefix = attr_prefix(self); @@ -390,7 +390,7 @@ impl Rewrite for [ast::Attribute] { // Determine if the source text is annotated with `#[rustfmt::skip::attributes(derive)]` // or `#![rustfmt::skip::attributes(derive)]` - let skip_derives = context.skip_context.skip_attribute("derive"); + let skip_derives = context.skip_context.attributes.skip("derive"); // This is not just a simple map because we need to handle doc comments // (where we take as many doc comment attributes as possible) and possibly diff --git a/src/tools/rustfmt/src/bin/main.rs b/src/tools/rustfmt/src/bin/main.rs index 8e871e61f26..be64559e877 100644 --- a/src/tools/rustfmt/src/bin/main.rs +++ b/src/tools/rustfmt/src/bin/main.rs @@ -136,7 +136,7 @@ fn make_opts() -> Options { "l", "files-with-diff", "Prints the names of mismatched files that were formatted. Prints the names of \ - files that would be formated when used with `--check` mode. ", + files that would be formatted when used with `--check` mode. ", ); opts.optmulti( "", diff --git a/src/tools/rustfmt/src/cargo-fmt/main.rs b/src/tools/rustfmt/src/cargo-fmt/main.rs index 9031d29b45f..2b714b68df0 100644 --- a/src/tools/rustfmt/src/cargo-fmt/main.rs +++ b/src/tools/rustfmt/src/cargo-fmt/main.rs @@ -198,12 +198,10 @@ fn convert_message_format_to_rustfmt_args( Ok(()) } "human" => Ok(()), - _ => { - return Err(format!( - "invalid --message-format value: {}. Allowed values are: short|json|human", - message_format - )); - } + _ => Err(format!( + "invalid --message-format value: {}. Allowed values are: short|json|human", + message_format + )), } } @@ -215,7 +213,7 @@ fn print_usage_to_stderr(reason: &str) { .expect("failed to write to stderr"); } -#[derive(Debug, Clone, Copy, PartialEq)] +#[derive(Debug, Clone, Copy, PartialEq, Eq)] pub enum Verbosity { Verbose, Normal, diff --git a/src/tools/rustfmt/src/cargo-fmt/test/mod.rs b/src/tools/rustfmt/src/cargo-fmt/test/mod.rs index 56e52fbabb6..696326e4f94 100644 --- a/src/tools/rustfmt/src/cargo-fmt/test/mod.rs +++ b/src/tools/rustfmt/src/cargo-fmt/test/mod.rs @@ -70,9 +70,9 @@ fn mandatory_separator() { .is_err() ); assert!( - !Opts::command() + Opts::command() .try_get_matches_from(&["test", "--", "--emit"]) - .is_err() + .is_ok() ); } diff --git a/src/tools/rustfmt/src/chains.rs b/src/tools/rustfmt/src/chains.rs index a1a73cf4bd5..39b8d687809 100644 --- a/src/tools/rustfmt/src/chains.rs +++ b/src/tools/rustfmt/src/chains.rs @@ -70,10 +70,64 @@ use crate::rewrite::{Rewrite, RewriteContext}; use crate::shape::Shape; use crate::source_map::SpanUtils; use crate::utils::{ - self, first_line_width, last_line_extendable, last_line_width, mk_sp, rewrite_ident, - trimmed_last_line_width, wrap_str, + self, filtered_str_fits, first_line_width, last_line_extendable, last_line_width, mk_sp, + rewrite_ident, trimmed_last_line_width, wrap_str, }; +/// Provides the original input contents from the span +/// of a chain element with trailing spaces trimmed. +fn format_overflow_style(span: Span, context: &RewriteContext<'_>) -> Option<String> { + context.snippet_provider.span_to_snippet(span).map(|s| { + s.lines() + .map(|l| l.trim_end()) + .collect::<Vec<_>>() + .join("\n") + }) +} + +fn format_chain_item( + item: &ChainItem, + context: &RewriteContext<'_>, + rewrite_shape: Shape, + allow_overflow: bool, +) -> Option<String> { + if allow_overflow { + item.rewrite(context, rewrite_shape) + .or_else(|| format_overflow_style(item.span, context)) + } else { + item.rewrite(context, rewrite_shape) + } +} + +fn get_block_child_shape( + prev_ends_with_block: bool, + context: &RewriteContext<'_>, + shape: Shape, +) -> Shape { + if prev_ends_with_block { + shape.block_indent(0) + } else { + shape.block_indent(context.config.tab_spaces()) + } + .with_max_width(context.config) +} + +fn get_visual_style_child_shape( + context: &RewriteContext<'_>, + shape: Shape, + offset: usize, + parent_overflowing: bool, +) -> Option<Shape> { + if !parent_overflowing { + shape + .with_max_width(context.config) + .offset_left(offset) + .map(|s| s.visual_indent(0)) + } else { + Some(shape.visual_indent(offset)) + } +} + pub(crate) fn rewrite_chain( expr: &ast::Expr, context: &RewriteContext<'_>, @@ -496,6 +550,8 @@ struct ChainFormatterShared<'a> { // The number of children in the chain. This is not equal to `self.children.len()` // because `self.children` will change size as we process the chain. child_count: usize, + // Whether elements are allowed to overflow past the max_width limit + allow_overflow: bool, } impl<'a> ChainFormatterShared<'a> { @@ -505,6 +561,8 @@ impl<'a> ChainFormatterShared<'a> { rewrites: Vec::with_capacity(chain.children.len() + 1), fits_single_line: false, child_count: chain.children.len(), + // TODO(calebcartwright) + allow_overflow: false, } } @@ -517,6 +575,14 @@ impl<'a> ChainFormatterShared<'a> { } } + fn format_children(&mut self, context: &RewriteContext<'_>, child_shape: Shape) -> Option<()> { + for item in &self.children[..self.children.len() - 1] { + let rewrite = format_chain_item(item, context, child_shape, self.allow_overflow)?; + self.rewrites.push(rewrite); + } + Some(()) + } + // Rewrite the last child. The last child of a chain requires special treatment. We need to // know whether 'overflowing' the last child make a better formatting: // @@ -729,22 +795,12 @@ impl<'a> ChainFormatter for ChainFormatterBlock<'a> { } fn child_shape(&self, context: &RewriteContext<'_>, shape: Shape) -> Option<Shape> { - Some( - if self.root_ends_with_block { - shape.block_indent(0) - } else { - shape.block_indent(context.config.tab_spaces()) - } - .with_max_width(context.config), - ) + let block_end = self.root_ends_with_block; + Some(get_block_child_shape(block_end, context, shape)) } fn format_children(&mut self, context: &RewriteContext<'_>, child_shape: Shape) -> Option<()> { - for item in &self.shared.children[..self.shared.children.len() - 1] { - let rewrite = item.rewrite(context, child_shape)?; - self.shared.rewrites.push(rewrite); - } - Some(()) + self.shared.format_children(context, child_shape) } fn format_last_child( @@ -808,15 +864,14 @@ impl<'a> ChainFormatter for ChainFormatterVisual<'a> { .visual_indent(self.offset) .sub_width(self.offset)?; let rewrite = item.rewrite(context, child_shape)?; - match wrap_str(rewrite, context.config.max_width(), shape) { - Some(rewrite) => root_rewrite.push_str(&rewrite), - None => { - // We couldn't fit in at the visual indent, try the last - // indent. - let rewrite = item.rewrite(context, parent_shape)?; - root_rewrite.push_str(&rewrite); - self.offset = 0; - } + if filtered_str_fits(&rewrite, context.config.max_width(), shape) { + root_rewrite.push_str(&rewrite); + } else { + // We couldn't fit in at the visual indent, try the last + // indent. + let rewrite = item.rewrite(context, parent_shape)?; + root_rewrite.push_str(&rewrite); + self.offset = 0; } self.shared.children = &self.shared.children[1..]; @@ -827,18 +882,17 @@ impl<'a> ChainFormatter for ChainFormatterVisual<'a> { } fn child_shape(&self, context: &RewriteContext<'_>, shape: Shape) -> Option<Shape> { - shape - .with_max_width(context.config) - .offset_left(self.offset) - .map(|s| s.visual_indent(0)) + get_visual_style_child_shape( + context, + shape, + self.offset, + // TODO(calebcartwright): self.shared.permissibly_overflowing_parent, + false, + ) } fn format_children(&mut self, context: &RewriteContext<'_>, child_shape: Shape) -> Option<()> { - for item in &self.shared.children[..self.shared.children.len() - 1] { - let rewrite = item.rewrite(context, child_shape)?; - self.shared.rewrites.push(rewrite); - } - Some(()) + self.shared.format_children(context, child_shape) } fn format_last_child( diff --git a/src/tools/rustfmt/src/config/config_type.rs b/src/tools/rustfmt/src/config/config_type.rs index c5e61658ad1..54ca7676dfc 100644 --- a/src/tools/rustfmt/src/config/config_type.rs +++ b/src/tools/rustfmt/src/config/config_type.rs @@ -1,4 +1,5 @@ use crate::config::file_lines::FileLines; +use crate::config::macro_names::MacroSelectors; use crate::config::options::{IgnoreList, WidthHeuristics}; /// Trait for types that can be used in `Config`. @@ -6,6 +7,14 @@ pub(crate) trait ConfigType: Sized { /// Returns hint text for use in `Config::print_docs()`. For enum types, this is a /// pipe-separated list of variants; for other types it returns `<type>`. fn doc_hint() -> String; + + /// Return `true` if the variant (i.e. value of this type) is stable. + /// + /// By default, return true for all values. Enums annotated with `#[config_type]` + /// are automatically implemented, based on the `#[unstable_variant]` annotation. + fn stable_variant(&self) -> bool { + true + } } impl ConfigType for bool { @@ -38,6 +47,12 @@ impl ConfigType for FileLines { } } +impl ConfigType for MacroSelectors { + fn doc_hint() -> String { + String::from("[<string>, ...]") + } +} + impl ConfigType for WidthHeuristics { fn doc_hint() -> String { String::new() @@ -51,6 +66,13 @@ impl ConfigType for IgnoreList { } macro_rules! create_config { + // Options passed in to the macro. + // + // - $i: the ident name of the option + // - $ty: the type of the option value + // - $def: the default value of the option + // - $stb: true if the option is stable + // - $dstring: description of the option ($($i:ident: $ty:ty, $def:expr, $stb:expr, $( $dstring:expr ),+ );+ $(;)*) => ( #[cfg(test)] use std::collections::HashSet; @@ -61,9 +83,12 @@ macro_rules! create_config { #[derive(Clone)] #[allow(unreachable_pub)] pub struct Config { - // For each config item, we store a bool indicating whether it has - // been accessed and the value, and a bool whether the option was - // manually initialised, or taken from the default, + // For each config item, we store: + // + // - 0: true if the value has been access + // - 1: true if the option was manually initialized + // - 2: the option value + // - 3: true if the option is unstable $($i: (Cell<bool>, bool, $ty, bool)),+ } @@ -102,6 +127,7 @@ macro_rules! create_config { | "array_width" | "chain_width" => self.0.set_heuristics(), "merge_imports" => self.0.set_merge_imports(), + "fn_args_layout" => self.0.set_fn_args_layout(), &_ => (), } } @@ -143,24 +169,20 @@ macro_rules! create_config { fn fill_from_parsed_config(mut self, parsed: PartialConfig, dir: &Path) -> Config { $( - if let Some(val) = parsed.$i { - if self.$i.3 { + if let Some(option_value) = parsed.$i { + let option_stable = self.$i.3; + if $crate::config::config_type::is_stable_option_and_value( + stringify!($i), option_stable, &option_value + ) { self.$i.1 = true; - self.$i.2 = val; - } else { - if crate::is_nightly_channel!() { - self.$i.1 = true; - self.$i.2 = val; - } else { - eprintln!("Warning: can't set `{} = {:?}`, unstable features are only \ - available in nightly channel.", stringify!($i), val); - } + self.$i.2 = option_value; } } )+ self.set_heuristics(); self.set_ignore(dir); self.set_merge_imports(); + self.set_fn_args_layout(); self } @@ -221,12 +243,22 @@ macro_rules! create_config { match key { $( stringify!($i) => { - self.$i.1 = true; - self.$i.2 = val.parse::<$ty>() + let option_value = val.parse::<$ty>() .expect(&format!("Failed to parse override for {} (\"{}\") as a {}", stringify!($i), val, stringify!($ty))); + + // Users are currently allowed to set unstable + // options/variants via the `--config` options override. + // + // There is ongoing discussion about how to move forward here: + // https://github.com/rust-lang/rustfmt/pull/5379 + // + // For now, do not validate whether the option or value is stable, + // just always set it. + self.$i.1 = true; + self.$i.2 = option_value; } )+ _ => panic!("Unknown config key in override: {}", key) @@ -243,14 +275,21 @@ macro_rules! create_config { | "array_width" | "chain_width" => self.set_heuristics(), "merge_imports" => self.set_merge_imports(), + "fn_args_layout" => self.set_fn_args_layout(), &_ => (), } } #[allow(unreachable_pub)] pub fn is_hidden_option(name: &str) -> bool { - const HIDE_OPTIONS: [&str; 5] = - ["verbose", "verbose_diff", "file_lines", "width_heuristics", "merge_imports"]; + const HIDE_OPTIONS: [&str; 6] = [ + "verbose", + "verbose_diff", + "file_lines", + "width_heuristics", + "merge_imports", + "fn_args_layout" + ]; HIDE_OPTIONS.contains(&name) } @@ -400,6 +439,18 @@ macro_rules! create_config { } } + fn set_fn_args_layout(&mut self) { + if self.was_set().fn_args_layout() { + eprintln!( + "Warning: the `fn_args_layout` option is deprecated. \ + Use `fn_params_layout`. instead" + ); + if !self.was_set().fn_params_layout() { + self.fn_params_layout.2 = self.fn_args_layout(); + } + } + } + #[allow(unreachable_pub)] /// Returns `true` if the config key was explicitly set and is the default value. pub fn is_default(&self, key: &str) -> bool { @@ -424,3 +475,38 @@ macro_rules! create_config { } ) } + +pub(crate) fn is_stable_option_and_value<T>( + option_name: &str, + option_stable: bool, + option_value: &T, +) -> bool +where + T: PartialEq + std::fmt::Debug + ConfigType, +{ + let nightly = crate::is_nightly_channel!(); + let variant_stable = option_value.stable_variant(); + match (nightly, option_stable, variant_stable) { + // Stable with an unstable option + (false, false, _) => { + eprintln!( + "Warning: can't set `{} = {:?}`, unstable features are only \ + available in nightly channel.", + option_name, option_value + ); + false + } + // Stable with a stable option, but an unstable variant + (false, true, false) => { + eprintln!( + "Warning: can't set `{} = {:?}`, unstable variants are only \ + available in nightly channel.", + option_name, option_value + ); + false + } + // Nightly: everything allowed + // Stable with stable option and variant: allowed + (true, _, _) | (false, true, true) => true, + } +} diff --git a/src/tools/rustfmt/src/config/macro_names.rs b/src/tools/rustfmt/src/config/macro_names.rs new file mode 100644 index 00000000000..26ad78d6dca --- /dev/null +++ b/src/tools/rustfmt/src/config/macro_names.rs @@ -0,0 +1,118 @@ +//! This module contains types and functions to support formatting specific macros. + +use itertools::Itertools; +use std::{fmt, str}; + +use serde::{Deserialize, Serialize}; +use serde_json as json; +use thiserror::Error; + +/// Defines the name of a macro. +#[derive(Clone, Debug, Eq, PartialEq, Hash, Ord, PartialOrd, Deserialize, Serialize)] +pub struct MacroName(String); + +impl MacroName { + pub fn new(other: String) -> Self { + Self(other) + } +} + +impl fmt::Display for MacroName { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + self.0.fmt(f) + } +} + +impl From<MacroName> for String { + fn from(other: MacroName) -> Self { + other.0 + } +} + +/// Defines a selector to match against a macro. +#[derive(Clone, Debug, Eq, PartialEq, Hash, Ord, PartialOrd, Deserialize, Serialize)] +pub enum MacroSelector { + Name(MacroName), + All, +} + +impl fmt::Display for MacroSelector { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + match self { + Self::Name(name) => name.fmt(f), + Self::All => write!(f, "*"), + } + } +} + +impl str::FromStr for MacroSelector { + type Err = std::convert::Infallible; + + fn from_str(s: &str) -> Result<Self, Self::Err> { + Ok(match s { + "*" => MacroSelector::All, + name => MacroSelector::Name(MacroName(name.to_owned())), + }) + } +} + +/// A set of macro selectors. +#[derive(Clone, Debug, Default, PartialEq, Deserialize, Serialize)] +pub struct MacroSelectors(pub Vec<MacroSelector>); + +impl fmt::Display for MacroSelectors { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + write!(f, "{}", self.0.iter().format(", ")) + } +} + +#[derive(Error, Debug)] +pub enum MacroSelectorsError { + #[error("{0}")] + Json(json::Error), +} + +// This impl is needed for `Config::override_value` to work for use in tests. +impl str::FromStr for MacroSelectors { + type Err = MacroSelectorsError; + + fn from_str(s: &str) -> Result<Self, Self::Err> { + let raw: Vec<&str> = json::from_str(s).map_err(MacroSelectorsError::Json)?; + Ok(Self( + raw.into_iter() + .map(|raw| { + MacroSelector::from_str(raw).expect("MacroSelector from_str is infallible") + }) + .collect(), + )) + } +} + +#[cfg(test)] +mod test { + use super::*; + use std::str::FromStr; + + #[test] + fn macro_names_from_str() { + let macro_names = MacroSelectors::from_str(r#"["foo", "*", "bar"]"#).unwrap(); + assert_eq!( + macro_names, + MacroSelectors( + [ + MacroSelector::Name(MacroName("foo".to_owned())), + MacroSelector::All, + MacroSelector::Name(MacroName("bar".to_owned())) + ] + .into_iter() + .collect() + ) + ); + } + + #[test] + fn macro_names_display() { + let macro_names = MacroSelectors::from_str(r#"["foo", "*", "bar"]"#).unwrap(); + assert_eq!(format!("{}", macro_names), "foo, *, bar"); + } +} diff --git a/src/tools/rustfmt/src/config/mod.rs b/src/tools/rustfmt/src/config/mod.rs index f49c18d3a46..14f27f3f8b6 100644 --- a/src/tools/rustfmt/src/config/mod.rs +++ b/src/tools/rustfmt/src/config/mod.rs @@ -13,15 +13,20 @@ pub use crate::config::file_lines::{FileLines, FileName, Range}; #[allow(unreachable_pub)] pub use crate::config::lists::*; #[allow(unreachable_pub)] +pub use crate::config::macro_names::{MacroSelector, MacroSelectors}; +#[allow(unreachable_pub)] pub use crate::config::options::*; #[macro_use] pub(crate) mod config_type; #[macro_use] +#[allow(unreachable_pub)] pub(crate) mod options; pub(crate) mod file_lines; +#[allow(unreachable_pub)] pub(crate) mod lists; +pub(crate) mod macro_names; // This macro defines configuration options used in rustfmt. Each option // is defined as follows: @@ -67,6 +72,8 @@ create_config! { format_macro_matchers: bool, false, false, "Format the metavariable matching patterns in macros"; format_macro_bodies: bool, true, false, "Format the bodies of macros"; + skip_macro_invocations: MacroSelectors, MacroSelectors::default(), false, + "Skip formatting the bodies of macros invoked with the following names."; hex_literal_case: HexLiteralCase, HexLiteralCase::Preserve, false, "Format hexadecimal integer literals"; @@ -119,7 +126,9 @@ create_config! { force_multiline_blocks: bool, false, false, "Force multiline closure bodies and match arms to be wrapped in a block"; fn_args_layout: Density, Density::Tall, true, - "Control the layout of arguments in a function"; + "(deprecated: use fn_params_layout instead)"; + fn_params_layout: Density, Density::Tall, true, + "Control the layout of parameters in function signatures."; brace_style: BraceStyle, BraceStyle::SameLineWhere, false, "Brace style for items"; control_brace_style: ControlBraceStyle, ControlBraceStyle::AlwaysSameLine, false, "Brace style for control flow constructs"; @@ -175,7 +184,7 @@ create_config! { make_backup: bool, false, false, "Backup changed files"; print_misformatted_file_names: bool, false, true, "Prints the names of mismatched files that were formatted. Prints the names of \ - files that would be formated when used with `--check` mode. "; + files that would be formatted when used with `--check` mode. "; } #[derive(Error, Debug)] @@ -191,6 +200,7 @@ impl PartialConfig { cloned.width_heuristics = None; cloned.print_misformatted_file_names = None; cloned.merge_imports = None; + cloned.fn_args_layout = None; ::toml::to_string(&cloned).map_err(ToTomlError) } @@ -403,11 +413,21 @@ mod test { use super::*; use std::str; + use crate::config::macro_names::MacroName; use rustfmt_config_proc_macro::{nightly_only_test, stable_only_test}; #[allow(dead_code)] mod mock { use super::super::*; + use rustfmt_config_proc_macro::config_type; + + #[config_type] + pub(crate) enum PartiallyUnstableOption { + V1, + V2, + #[unstable_variant] + V3, + } create_config! { // Options that are used by the generated functions @@ -427,6 +447,12 @@ mod test { "Merge imports"; merge_imports: bool, false, false, "(deprecated: use imports_granularity instead)"; + // fn_args_layout renamed to fn_params_layout + fn_args_layout: Density, Density::Tall, true, + "(deprecated: use fn_params_layout instead)"; + fn_params_layout: Density, Density::Tall, true, + "Control the layout of parameters in a function signatures."; + // Width Heuristics use_small_heuristics: Heuristics, Heuristics::Default, true, "Whether to use different formatting for items and \ @@ -451,6 +477,63 @@ mod test { // Options that are used by the tests stable_option: bool, false, true, "A stable option"; unstable_option: bool, false, false, "An unstable option"; + partially_unstable_option: PartiallyUnstableOption, PartiallyUnstableOption::V1, true, + "A partially unstable option"; + } + + #[cfg(test)] + mod partially_unstable_option { + use super::{Config, PartialConfig, PartiallyUnstableOption}; + use rustfmt_config_proc_macro::{nightly_only_test, stable_only_test}; + use std::path::Path; + + /// From the config file, we can fill with a stable variant + #[test] + fn test_from_toml_stable_value() { + let toml = r#" + partially_unstable_option = "V2" + "#; + let partial_config: PartialConfig = toml::from_str(toml).unwrap(); + let config = Config::default(); + let config = config.fill_from_parsed_config(partial_config, Path::new("")); + assert_eq!( + config.partially_unstable_option(), + PartiallyUnstableOption::V2 + ); + } + + /// From the config file, we cannot fill with an unstable variant (stable only) + #[stable_only_test] + #[test] + fn test_from_toml_unstable_value_on_stable() { + let toml = r#" + partially_unstable_option = "V3" + "#; + let partial_config: PartialConfig = toml::from_str(toml).unwrap(); + let config = Config::default(); + let config = config.fill_from_parsed_config(partial_config, Path::new("")); + assert_eq!( + config.partially_unstable_option(), + // default value from config, i.e. fill failed + PartiallyUnstableOption::V1 + ); + } + + /// From the config file, we can fill with an unstable variant (nightly only) + #[nightly_only_test] + #[test] + fn test_from_toml_unstable_value_on_nightly() { + let toml = r#" + partially_unstable_option = "V3" + "#; + let partial_config: PartialConfig = toml::from_str(toml).unwrap(); + let config = Config::default(); + let config = config.fill_from_parsed_config(partial_config, Path::new("")); + assert_eq!( + config.partially_unstable_option(), + PartiallyUnstableOption::V3 + ); + } } } @@ -489,6 +572,11 @@ mod test { assert_eq!(config.was_set().verbose(), false); } + const PRINT_DOCS_STABLE_OPTION: &str = "stable_option <boolean> Default: false"; + const PRINT_DOCS_UNSTABLE_OPTION: &str = "unstable_option <boolean> Default: false (unstable)"; + const PRINT_DOCS_PARTIALLY_UNSTABLE_OPTION: &str = + "partially_unstable_option [V1|V2|V3 (unstable)] Default: V1"; + #[test] fn test_print_docs_exclude_unstable() { use self::mock::Config; @@ -497,10 +585,9 @@ mod test { Config::print_docs(&mut output, false); let s = str::from_utf8(&output).unwrap(); - - assert_eq!(s.contains("stable_option"), true); - assert_eq!(s.contains("unstable_option"), false); - assert_eq!(s.contains("(unstable)"), false); + assert_eq!(s.contains(PRINT_DOCS_STABLE_OPTION), true); + assert_eq!(s.contains(PRINT_DOCS_UNSTABLE_OPTION), false); + assert_eq!(s.contains(PRINT_DOCS_PARTIALLY_UNSTABLE_OPTION), true); } #[test] @@ -511,9 +598,9 @@ mod test { Config::print_docs(&mut output, true); let s = str::from_utf8(&output).unwrap(); - assert_eq!(s.contains("stable_option"), true); - assert_eq!(s.contains("unstable_option"), true); - assert_eq!(s.contains("(unstable)"), true); + assert_eq!(s.contains(PRINT_DOCS_STABLE_OPTION), true); + assert_eq!(s.contains(PRINT_DOCS_UNSTABLE_OPTION), true); + assert_eq!(s.contains(PRINT_DOCS_PARTIALLY_UNSTABLE_OPTION), true); } #[test] @@ -541,6 +628,7 @@ normalize_doc_attributes = false format_strings = false format_macro_matchers = false format_macro_bodies = true +skip_macro_invocations = [] hex_literal_case = "Preserve" empty_item_single_line = true struct_lit_single_line = true @@ -567,7 +655,7 @@ enum_discrim_align_threshold = 0 match_arm_blocks = true match_arm_leading_pipes = "Never" force_multiline_blocks = false -fn_args_layout = "Tall" +fn_params_layout = "Tall" brace_style = "SameLineWhere" control_brace_style = "AlwaysSameLine" trailing_semicolon = true @@ -921,4 +1009,45 @@ make_backup = false assert_eq!(config.single_line_if_else_max_width(), 100); } } + + #[cfg(test)] + mod partially_unstable_option { + use super::mock::{Config, PartiallyUnstableOption}; + use super::*; + + /// From the command line, we can override with a stable variant. + #[test] + fn test_override_stable_value() { + let mut config = Config::default(); + config.override_value("partially_unstable_option", "V2"); + assert_eq!( + config.partially_unstable_option(), + PartiallyUnstableOption::V2 + ); + } + + /// From the command line, we can override with an unstable variant. + #[test] + fn test_override_unstable_value() { + let mut config = Config::default(); + config.override_value("partially_unstable_option", "V3"); + assert_eq!( + config.partially_unstable_option(), + PartiallyUnstableOption::V3 + ); + } + } + + #[test] + fn test_override_skip_macro_invocations() { + let mut config = Config::default(); + config.override_value("skip_macro_invocations", r#"["*", "println"]"#); + assert_eq!( + config.skip_macro_invocations(), + MacroSelectors(vec![ + MacroSelector::All, + MacroSelector::Name(MacroName::new("println".to_owned())) + ]) + ); + } } diff --git a/src/tools/rustfmt/src/expr.rs b/src/tools/rustfmt/src/expr.rs index 868ff045ab7..0be4c3cf168 100644 --- a/src/tools/rustfmt/src/expr.rs +++ b/src/tools/rustfmt/src/expr.rs @@ -29,9 +29,9 @@ use crate::spanned::Spanned; use crate::string::{rewrite_string, StringFormat}; use crate::types::{rewrite_path, PathContext}; use crate::utils::{ - colon_spaces, contains_skip, count_newlines, first_line_ends_with, inner_attributes, - last_line_extendable, last_line_width, mk_sp, outer_attributes, semicolon_for_expr, - unicode_str_width, wrap_str, + colon_spaces, contains_skip, count_newlines, filtered_str_fits, first_line_ends_with, + inner_attributes, last_line_extendable, last_line_width, mk_sp, outer_attributes, + semicolon_for_expr, unicode_str_width, wrap_str, }; use crate::vertical::rewrite_with_alignment; use crate::visitor::FmtVisitor; @@ -2050,8 +2050,7 @@ fn choose_rhs<R: Rewrite>( match (orig_rhs, new_rhs) { (Some(ref orig_rhs), Some(ref new_rhs)) - if wrap_str(new_rhs.clone(), context.config.max_width(), new_shape) - .is_none() => + if !filtered_str_fits(&new_rhs, context.config.max_width(), new_shape) => { Some(format!("{}{}", before_space_str, orig_rhs)) } diff --git a/src/tools/rustfmt/src/imports.rs b/src/tools/rustfmt/src/imports.rs index d9dc8d004af..339e5cef5af 100644 --- a/src/tools/rustfmt/src/imports.rs +++ b/src/tools/rustfmt/src/imports.rs @@ -251,8 +251,8 @@ fn flatten_use_trees( use_trees: Vec<UseTree>, import_granularity: ImportGranularity, ) -> Vec<UseTree> { - // Return non-sorted single occurance of the use-trees text string; - // order is by first occurance of the use-tree. + // Return non-sorted single occurrence of the use-trees text string; + // order is by first occurrence of the use-tree. use_trees .into_iter() .flat_map(|tree| tree.flatten(import_granularity)) diff --git a/src/tools/rustfmt/src/items.rs b/src/tools/rustfmt/src/items.rs index a2a73f0a5fb..25e8a024857 100644 --- a/src/tools/rustfmt/src/items.rs +++ b/src/tools/rustfmt/src/items.rs @@ -1084,7 +1084,11 @@ pub(crate) fn format_trait( let item_snippet = context.snippet(item.span); if let Some(lo) = item_snippet.find('/') { // 1 = `{` - let comment_hi = body_lo - BytePos(1); + let comment_hi = if generics.params.len() > 0 { + generics.span.lo() - BytePos(1) + } else { + body_lo - BytePos(1) + }; let comment_lo = item.span.lo() + BytePos(lo as u32); if comment_lo < comment_hi { match recover_missing_comment_in_span( @@ -1241,7 +1245,7 @@ fn format_unit_struct( ) -> Option<String> { let header_str = format_header(context, p.prefix, p.ident, p.vis, offset); let generics_str = if let Some(generics) = p.generics { - let hi = context.snippet_provider.span_before(p.span, ";"); + let hi = context.snippet_provider.span_before_last(p.span, ";"); format_generics( context, generics, @@ -2602,7 +2606,7 @@ fn rewrite_params( ¶m_items, context .config - .fn_args_layout() + .fn_params_layout() .to_list_tactic(param_items.len()), Separator::Comma, one_line_budget, diff --git a/src/tools/rustfmt/src/lists.rs b/src/tools/rustfmt/src/lists.rs index e8785050782..a878e6cf9b2 100644 --- a/src/tools/rustfmt/src/lists.rs +++ b/src/tools/rustfmt/src/lists.rs @@ -297,9 +297,9 @@ where } else { inner_item.as_ref() }; - let mut item_last_line_width = item_last_line.len() + item_sep_len; + let mut item_last_line_width = unicode_str_width(item_last_line) + item_sep_len; if item_last_line.starts_with(&**indent_str) { - item_last_line_width -= indent_str.len(); + item_last_line_width -= unicode_str_width(indent_str); } if !item.is_substantial() { @@ -449,7 +449,7 @@ where } else if starts_with_newline(comment) { false } else { - comment.trim().contains('\n') || comment.trim().len() > width + comment.trim().contains('\n') || unicode_str_width(comment.trim()) > width }; rewrite_comment( @@ -465,7 +465,7 @@ where if !starts_with_newline(comment) { if formatting.align_comments { let mut comment_alignment = - post_comment_alignment(item_max_width, inner_item.len()); + post_comment_alignment(item_max_width, unicode_str_width(inner_item)); if first_line_width(&formatted_comment) + last_line_width(&result) + comment_alignment @@ -475,7 +475,7 @@ where item_max_width = None; formatted_comment = rewrite_post_comment(&mut item_max_width)?; comment_alignment = - post_comment_alignment(item_max_width, inner_item.len()); + post_comment_alignment(item_max_width, unicode_str_width(inner_item)); } for _ in 0..=comment_alignment { result.push(' '); @@ -533,7 +533,7 @@ where let mut first = true; for item in items.clone().into_iter().skip(i) { let item = item.as_ref(); - let inner_item_width = item.inner_as_ref().len(); + let inner_item_width = unicode_str_width(item.inner_as_ref()); if !first && (item.is_different_group() || item.post_comment.is_none() @@ -552,8 +552,8 @@ where max_width } -fn post_comment_alignment(item_max_width: Option<usize>, inner_item_len: usize) -> usize { - item_max_width.unwrap_or(0).saturating_sub(inner_item_len) +fn post_comment_alignment(item_max_width: Option<usize>, inner_item_width: usize) -> usize { + item_max_width.unwrap_or(0).saturating_sub(inner_item_width) } pub(crate) struct ListItems<'a, I, F1, F2, F3> diff --git a/src/tools/rustfmt/src/macros.rs b/src/tools/rustfmt/src/macros.rs index df949388037..d58f7547fef 100644 --- a/src/tools/rustfmt/src/macros.rs +++ b/src/tools/rustfmt/src/macros.rs @@ -35,8 +35,8 @@ use crate::shape::{Indent, Shape}; use crate::source_map::SpanUtils; use crate::spanned::Spanned; use crate::utils::{ - format_visibility, indent_next_line, is_empty_line, mk_sp, remove_trailing_white_spaces, - rewrite_ident, trim_left_preserve_layout, wrap_str, NodeIdExt, + filtered_str_fits, format_visibility, indent_next_line, is_empty_line, mk_sp, + remove_trailing_white_spaces, rewrite_ident, trim_left_preserve_layout, NodeIdExt, }; use crate::visitor::FmtVisitor; @@ -157,7 +157,8 @@ pub(crate) fn rewrite_macro( ) -> Option<String> { let should_skip = context .skip_context - .skip_macro(context.snippet(mac.path.span)); + .macros + .skip(context.snippet(mac.path.span)); if should_skip { None } else { @@ -1265,15 +1266,14 @@ impl MacroBranch { } } }; - let new_body = wrap_str( - new_body_snippet.snippet.to_string(), - config.max_width(), - shape, - )?; + + if !filtered_str_fits(&new_body_snippet.snippet, config.max_width(), shape) { + return None; + } // Indent the body since it is in a block. let indent_str = body_indent.to_string(&config); - let mut new_body = LineClasses::new(new_body.trim_end()) + let mut new_body = LineClasses::new(new_body_snippet.snippet.trim_end()) .enumerate() .fold( (String::new(), true), diff --git a/src/tools/rustfmt/src/skip.rs b/src/tools/rustfmt/src/skip.rs index 032922d421d..68f85b2ade4 100644 --- a/src/tools/rustfmt/src/skip.rs +++ b/src/tools/rustfmt/src/skip.rs @@ -2,33 +2,84 @@ use rustc_ast::ast; use rustc_ast_pretty::pprust; +use std::collections::HashSet; -/// Take care of skip name stack. You can update it by attributes slice or -/// by other context. Query this context to know if you need skip a block. +/// Track which blocks of code are to be skipped when formatting. +/// +/// You can update it by: +/// +/// - attributes slice +/// - manually feeding values into the underlying contexts +/// +/// Query this context to know if you need to skip a block. #[derive(Default, Clone)] pub(crate) struct SkipContext { - macros: Vec<String>, - attributes: Vec<String>, + pub(crate) macros: SkipNameContext, + pub(crate) attributes: SkipNameContext, } impl SkipContext { pub(crate) fn update_with_attrs(&mut self, attrs: &[ast::Attribute]) { - self.macros.append(&mut get_skip_names("macros", attrs)); - self.attributes - .append(&mut get_skip_names("attributes", attrs)); + self.macros.extend(get_skip_names("macros", attrs)); + self.attributes.extend(get_skip_names("attributes", attrs)); } - pub(crate) fn update(&mut self, mut other: SkipContext) { - self.macros.append(&mut other.macros); - self.attributes.append(&mut other.attributes); + pub(crate) fn update(&mut self, other: SkipContext) { + let SkipContext { macros, attributes } = other; + self.macros.update(macros); + self.attributes.update(attributes); + } +} + +/// Track which names to skip. +/// +/// Query this context with a string to know whether to skip it. +#[derive(Clone)] +pub(crate) enum SkipNameContext { + All, + Values(HashSet<String>), +} + +impl Default for SkipNameContext { + fn default() -> Self { + Self::Values(Default::default()) + } +} + +impl Extend<String> for SkipNameContext { + fn extend<T: IntoIterator<Item = String>>(&mut self, iter: T) { + match self { + Self::All => {} + Self::Values(values) => values.extend(iter), + } + } +} + +impl SkipNameContext { + pub(crate) fn update(&mut self, other: Self) { + match (self, other) { + // If we're already skipping everything, nothing more can be added + (Self::All, _) => {} + // If we want to skip all, set it + (this, Self::All) => { + *this = Self::All; + } + // If we have some new values to skip, add them + (Self::Values(existing_values), Self::Values(new_values)) => { + existing_values.extend(new_values) + } + } } - pub(crate) fn skip_macro(&self, name: &str) -> bool { - self.macros.iter().any(|n| n == name) + pub(crate) fn skip(&self, name: &str) -> bool { + match self { + Self::All => true, + Self::Values(values) => values.contains(name), + } } - pub(crate) fn skip_attribute(&self, name: &str) -> bool { - self.attributes.iter().any(|n| n == name) + pub(crate) fn skip_all(&mut self) { + *self = Self::All; } } diff --git a/src/tools/rustfmt/src/test/configuration_snippet.rs b/src/tools/rustfmt/src/test/configuration_snippet.rs index c8fda7c8556..c70b3c5facd 100644 --- a/src/tools/rustfmt/src/test/configuration_snippet.rs +++ b/src/tools/rustfmt/src/test/configuration_snippet.rs @@ -27,8 +27,13 @@ impl ConfigurationSection { lazy_static! { static ref CONFIG_NAME_REGEX: regex::Regex = regex::Regex::new(r"^## `([^`]+)`").expect("failed creating configuration pattern"); + // Configuration values, which will be passed to `from_str`: + // + // - must be prefixed with `####` + // - must be wrapped in backticks + // - may by wrapped in double quotes (which will be stripped) static ref CONFIG_VALUE_REGEX: regex::Regex = - regex::Regex::new(r#"^#### `"?([^`"]+)"?`"#) + regex::Regex::new(r#"^#### `"?([^`]+?)"?`"#) .expect("failed creating configuration value pattern"); } diff --git a/src/tools/rustfmt/src/test/mod.rs b/src/tools/rustfmt/src/test/mod.rs index 6b5bc2b30dd..cfad4a8ed0e 100644 --- a/src/tools/rustfmt/src/test/mod.rs +++ b/src/tools/rustfmt/src/test/mod.rs @@ -982,11 +982,7 @@ fn rustfmt() -> PathBuf { assert!( me.is_file() || me.with_extension("exe").is_file(), "{}", - if cfg!(release) { - "no rustfmt bin, try running `cargo build --release` before testing" - } else { - "no rustfmt bin, try running `cargo build` before testing" - } + "no rustfmt bin, try running `cargo build` or `cargo build --release` before testing" ); me } diff --git a/src/tools/rustfmt/src/types.rs b/src/tools/rustfmt/src/types.rs index c1991e8d2c8..01e2fb6e61e 100644 --- a/src/tools/rustfmt/src/types.rs +++ b/src/tools/rustfmt/src/types.rs @@ -941,6 +941,28 @@ fn join_bounds_inner( ast::GenericBound::Trait(..) => last_line_extendable(s), }; + // Whether a GenericBound item is a PathSegment segment that includes internal array + // that contains more than one item + let is_item_with_multi_items_array = |item: &ast::GenericBound| match item { + ast::GenericBound::Trait(ref poly_trait_ref, ..) => { + let segments = &poly_trait_ref.trait_ref.path.segments; + if segments.len() > 1 { + true + } else { + if let Some(args_in) = &segments[0].args { + matches!( + args_in.deref(), + ast::GenericArgs::AngleBracketed(bracket_args) + if bracket_args.args.len() > 1 + ) + } else { + false + } + } + } + _ => false, + }; + let result = items.iter().enumerate().try_fold( (String::new(), None, false), |(strs, prev_trailing_span, prev_extendable), (i, item)| { @@ -1035,10 +1057,24 @@ fn join_bounds_inner( }, )?; - if !force_newline - && items.len() > 1 - && (result.0.contains('\n') || result.0.len() > shape.width) - { + // Whether to retry with a forced newline: + // Only if result is not already multiline and did not exceed line width, + // and either there is more than one item; + // or the single item is of type `Trait`, + // and any of the internal arrays contains more than one item; + let retry_with_force_newline = match context.config.version() { + Version::One => { + !force_newline + && items.len() > 1 + && (result.0.contains('\n') || result.0.len() > shape.width) + } + Version::Two if force_newline => false, + Version::Two if (!result.0.contains('\n') && result.0.len() <= shape.width) => false, + Version::Two if items.len() > 1 => true, + Version::Two => is_item_with_multi_items_array(&items[0]), + }; + + if retry_with_force_newline { join_bounds_inner(context, shape, items, need_indent, true) } else { Some(result.0) diff --git a/src/tools/rustfmt/src/utils.rs b/src/tools/rustfmt/src/utils.rs index 3e884419f1a..f681f55b37b 100644 --- a/src/tools/rustfmt/src/utils.rs +++ b/src/tools/rustfmt/src/utils.rs @@ -384,14 +384,15 @@ macro_rules! skip_out_of_file_lines_range_visitor { // Wraps String in an Option. Returns Some when the string adheres to the // Rewrite constraints defined for the Rewrite trait and None otherwise. pub(crate) fn wrap_str(s: String, max_width: usize, shape: Shape) -> Option<String> { - if is_valid_str(&filter_normal_code(&s), max_width, shape) { + if filtered_str_fits(&s, max_width, shape) { Some(s) } else { None } } -fn is_valid_str(snippet: &str, max_width: usize, shape: Shape) -> bool { +pub(crate) fn filtered_str_fits(snippet: &str, max_width: usize, shape: Shape) -> bool { + let snippet = &filter_normal_code(snippet); if !snippet.is_empty() { // First line must fits with `shape.width`. if first_line_width(snippet) > shape.width { diff --git a/src/tools/rustfmt/src/visitor.rs b/src/tools/rustfmt/src/visitor.rs index 9c3cc7820d2..f4d84d1381f 100644 --- a/src/tools/rustfmt/src/visitor.rs +++ b/src/tools/rustfmt/src/visitor.rs @@ -8,7 +8,7 @@ use rustc_span::{symbol, BytePos, Pos, Span}; use crate::attr::*; use crate::comment::{contains_comment, rewrite_comment, CodeCharKind, CommentCodeSlices}; use crate::config::Version; -use crate::config::{BraceStyle, Config}; +use crate::config::{BraceStyle, Config, MacroSelector}; use crate::coverage::transform_missing_snippet; use crate::items::{ format_impl, format_trait, format_trait_alias, is_mod_decl, is_use_item, rewrite_extern_crate, @@ -770,6 +770,15 @@ impl<'b, 'a: 'b> FmtVisitor<'a> { snippet_provider: &'a SnippetProvider, report: FormatReport, ) -> FmtVisitor<'a> { + let mut skip_context = SkipContext::default(); + let mut macro_names = Vec::new(); + for macro_selector in config.skip_macro_invocations().0 { + match macro_selector { + MacroSelector::Name(name) => macro_names.push(name.to_string()), + MacroSelector::All => skip_context.macros.skip_all(), + } + } + skip_context.macros.extend(macro_names); FmtVisitor { parent_context: None, parse_sess: parse_session, @@ -784,7 +793,7 @@ impl<'b, 'a: 'b> FmtVisitor<'a> { is_macro_def: false, macro_rewrite_failure: false, report, - skip_context: Default::default(), + skip_context, } } diff --git a/src/tools/rustfmt/tests/cargo-fmt/main.rs b/src/tools/rustfmt/tests/cargo-fmt/main.rs index 348876cd264..701c36fadea 100644 --- a/src/tools/rustfmt/tests/cargo-fmt/main.rs +++ b/src/tools/rustfmt/tests/cargo-fmt/main.rs @@ -4,6 +4,8 @@ use std::env; use std::path::Path; use std::process::Command; +use rustfmt_config_proc_macro::rustfmt_only_ci_test; + /// Run the cargo-fmt executable and return its output. fn cargo_fmt(args: &[&str]) -> (String, String) { let mut bin_dir = env::current_exe().unwrap(); @@ -47,7 +49,7 @@ macro_rules! assert_that { }; } -#[ignore] +#[rustfmt_only_ci_test] #[test] fn version() { assert_that!(&["--version"], starts_with("rustfmt ")); @@ -56,7 +58,7 @@ fn version() { assert_that!(&["--", "--version"], starts_with("rustfmt ")); } -#[ignore] +#[rustfmt_only_ci_test] #[test] fn print_config() { assert_that!( @@ -65,7 +67,7 @@ fn print_config() { ); } -#[ignore] +#[rustfmt_only_ci_test] #[test] fn rustfmt_help() { assert_that!(&["--", "--help"], contains("Format Rust code")); @@ -73,7 +75,7 @@ fn rustfmt_help() { assert_that!(&["--", "--help=config"], contains("Configuration Options:")); } -#[ignore] +#[rustfmt_only_ci_test] #[test] fn cargo_fmt_out_of_line_test_modules() { // See also https://github.com/rust-lang/rustfmt/issues/5119 @@ -96,3 +98,22 @@ fn cargo_fmt_out_of_line_test_modules() { assert!(stdout.contains(&format!("Diff in {}", path.display()))) } } + +#[rustfmt_only_ci_test] +#[test] +fn cargo_fmt_emits_error_on_line_overflow_true() { + // See also https://github.com/rust-lang/rustfmt/issues/3164 + let args = [ + "--check", + "--manifest-path", + "tests/cargo-fmt/source/issue_3164/Cargo.toml", + "--", + "--config", + "error_on_line_overflow=true", + ]; + + let (_stdout, stderr) = cargo_fmt(&args); + assert!(stderr.contains( + "line formatted, but exceeded maximum width (maximum: 100 (see `max_width` option)" + )) +} diff --git a/src/tools/rustfmt/tests/cargo-fmt/source/issue_3164/Cargo.toml b/src/tools/rustfmt/tests/cargo-fmt/source/issue_3164/Cargo.toml new file mode 100644 index 00000000000..580ef7e6e24 --- /dev/null +++ b/src/tools/rustfmt/tests/cargo-fmt/source/issue_3164/Cargo.toml @@ -0,0 +1,8 @@ +[package] +name = "issue_3164" +version = "0.1.0" +edition = "2021" + +# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html + +[dependencies] diff --git a/src/tools/rustfmt/tests/cargo-fmt/source/issue_3164/src/main.rs b/src/tools/rustfmt/tests/cargo-fmt/source/issue_3164/src/main.rs new file mode 100644 index 00000000000..9330107ac8d --- /dev/null +++ b/src/tools/rustfmt/tests/cargo-fmt/source/issue_3164/src/main.rs @@ -0,0 +1,13 @@ +#[allow(unused_macros)] +macro_rules! foo { + ($id:ident) => { + macro_rules! bar { + ($id2:tt) => { + #[cfg(any(target_feature = $id2, target_feature = $id2, target_feature = $id2, target_feature = $id2, target_feature = $id2))] + fn $id() {} + }; + } + }; +} + +fn main() {} diff --git a/src/tools/rustfmt/tests/config/small_tabs.toml b/src/tools/rustfmt/tests/config/small_tabs.toml index c3cfd34317a..4c37100894f 100644 --- a/src/tools/rustfmt/tests/config/small_tabs.toml +++ b/src/tools/rustfmt/tests/config/small_tabs.toml @@ -3,7 +3,7 @@ comment_width = 80 tab_spaces = 2 newline_style = "Unix" brace_style = "SameLineWhere" -fn_args_layout = "Tall" +fn_params_layout = "Tall" trailing_comma = "Vertical" indent_style = "Block" reorder_imports = false diff --git a/src/tools/rustfmt/tests/mod-resolver/issue-5198/lib/c/d/explanation.txt b/src/tools/rustfmt/tests/mod-resolver/issue-5198/lib/c/d/explanation.txt index 92c9e302143..254102ebabd 100644 --- a/src/tools/rustfmt/tests/mod-resolver/issue-5198/lib/c/d/explanation.txt +++ b/src/tools/rustfmt/tests/mod-resolver/issue-5198/lib/c/d/explanation.txt @@ -9,7 +9,7 @@ The directory name './lib/c/d/' conflicts with the './lib/c/d.rs' file name. * mod g; Module resolution will fail if we look for './lib/c/d/e.rs' or './lib/c/d/e/mod.rs', -so we should fall back to looking for './lib/c/e.rs', which correctly finds the modlue, that +so we should fall back to looking for './lib/c/e.rs', which correctly finds the module, that rustfmt should format. './lib/c/d/f.rs' and './lib/c/d/g/mod.rs' exist at the default submodule paths so we should be able diff --git a/src/tools/rustfmt/tests/mod-resolver/issue-5198/lib/explanation.txt b/src/tools/rustfmt/tests/mod-resolver/issue-5198/lib/explanation.txt index d436a8076cd..90464def8eb 100644 --- a/src/tools/rustfmt/tests/mod-resolver/issue-5198/lib/explanation.txt +++ b/src/tools/rustfmt/tests/mod-resolver/issue-5198/lib/explanation.txt @@ -9,7 +9,7 @@ The directory name './lib' conflicts with the './lib.rs' file name. * mod c; Module resolution will fail if we look for './lib/a.rs' or './lib/a/mod.rs', -so we should fall back to looking for './a.rs', which correctly finds the modlue that +so we should fall back to looking for './a.rs', which correctly finds the module that rustfmt should format. './lib/b.rs' and './lib/c/mod.rs' exist at the default submodule paths so we should be able diff --git a/src/tools/rustfmt/tests/rustfmt/main.rs b/src/tools/rustfmt/tests/rustfmt/main.rs index 4c6d52726f3..7ff301e8019 100644 --- a/src/tools/rustfmt/tests/rustfmt/main.rs +++ b/src/tools/rustfmt/tests/rustfmt/main.rs @@ -5,6 +5,8 @@ use std::fs::remove_file; use std::path::Path; use std::process::Command; +use rustfmt_config_proc_macro::rustfmt_only_ci_test; + /// Run the rustfmt executable and return its output. fn rustfmt(args: &[&str]) -> (String, String) { let mut bin_dir = env::current_exe().unwrap(); @@ -47,7 +49,7 @@ macro_rules! assert_that { }; } -#[ignore] +#[rustfmt_only_ci_test] #[test] fn print_config() { assert_that!( @@ -76,7 +78,7 @@ fn print_config() { remove_file("minimal-config").unwrap(); } -#[ignore] +#[rustfmt_only_ci_test] #[test] fn inline_config() { // single invocation @@ -157,3 +159,18 @@ fn mod_resolution_error_path_attribute_does_not_exist() { // The path attribute points to a file that does not exist assert!(stderr.contains("does_not_exist.rs does not exist")); } + +#[test] +fn rustfmt_emits_error_on_line_overflow_true() { + // See also https://github.com/rust-lang/rustfmt/issues/3164 + let args = [ + "--config", + "error_on_line_overflow=true", + "tests/cargo-fmt/source/issue_3164/src/main.rs", + ]; + + let (_stdout, stderr) = rustfmt(&args); + assert!(stderr.contains( + "line formatted, but exceeded maximum width (maximum: 100 (see `max_width` option)" + )) +} diff --git a/src/tools/rustfmt/tests/source/cfg_if/detect/arch/x86.rs b/src/tools/rustfmt/tests/source/cfg_if/detect/arch/x86.rs index d26f4ee894f..131cbb855f1 100644 --- a/src/tools/rustfmt/tests/source/cfg_if/detect/arch/x86.rs +++ b/src/tools/rustfmt/tests/source/cfg_if/detect/arch/x86.rs @@ -329,7 +329,7 @@ pub enum Feature { tbm, /// POPCNT (Population Count) popcnt, - /// FXSR (Floating-point context fast save and restor) + /// FXSR (Floating-point context fast save and restore) fxsr, /// XSAVE (Save Processor Extended States) xsave, diff --git a/src/tools/rustfmt/tests/source/comments_unicode.rs b/src/tools/rustfmt/tests/source/comments_unicode.rs new file mode 100644 index 00000000000..e65a245ba93 --- /dev/null +++ b/src/tools/rustfmt/tests/source/comments_unicode.rs @@ -0,0 +1,140 @@ +impl Default for WhitespaceCharacters { + fn default() -> Self { + Self { + space: '·', // U+00B7 + nbsp: '⍽', // U+237D + tab: '→', // U+2192 + newline: '⏎', // U+23CE + } + } +} + +const RAINBOWS: &[&str] = &[ + "rаinЬοѡ", // hue: 0 + "raіnЬοw", // hue: 2 + "rаіɴЬow", // hue: 2 + "raіɴЬoѡ", // hue: 8 + "ʀainЬow", // hue: 8 + "ʀaіɴboѡ", // hue: 8 + "ʀаіnbοw", // hue: 11 + "rainЬoѡ", // hue: 14 + "raіɴbow", // hue: 14 + "rаiɴЬow", // hue: 20 + "raіnЬow", // hue: 26 + "ʀaiɴbοw", // hue: 32 + "raіɴboѡ", // hue: 35 + "rаiɴbow", // hue: 35 + "rаіnbοw", // hue: 38 + "rаinЬow", // hue: 47 + "ʀaіnboѡ", // hue: 47 + "ʀaіnЬoѡ", // hue: 47 + "ʀаіɴbοw", // hue: 53 + "ʀaіnЬοѡ", // hue: 57 + "raiɴЬoѡ", // hue: 68 + "ʀainbοѡ", // hue: 68 + "ʀаinboѡ", // hue: 68 + "ʀаiɴbοw", // hue: 68 + "ʀаіnbow", // hue: 68 + "rаіnЬοѡ", // hue: 69 + "ʀainЬοw", // hue: 71 + "raiɴbow", // hue: 73 + "raіnЬoѡ", // hue: 74 + "rаіɴbοw", // hue: 77 + "raіnЬοѡ", // hue: 81 + "raiɴЬow", // hue: 83 + "ʀainbοw", // hue: 83 + "ʀаinbow", // hue: 83 + "ʀаiɴbοѡ", // hue: 83 + "ʀаіnboѡ", // hue: 83 + "ʀаіɴЬοѡ", // hue: 84 + "rainЬow", // hue: 85 + "ʀаiɴЬοw", // hue: 86 + "ʀаіnbοѡ", // hue: 89 + "ʀаіnЬοw", // hue: 92 + "rаiɴbοw", // hue: 95 + "ʀаіɴbοѡ", // hue: 98 + "ʀаiɴЬοѡ", // hue: 99 + "raіnbοw", // hue: 101 + "ʀаіɴЬοw", // hue: 101 + "ʀaiɴboѡ", // hue: 104 + "ʀаinbοѡ", // hue: 104 + "rаiɴbοѡ", // hue: 107 + "ʀаinЬοw", // hue: 107 + "rаiɴЬοw", // hue: 110 + "rаіnboѡ", // hue: 110 + "rаіnbοѡ", // hue: 113 + "ʀainЬοѡ", // hue: 114 + "rаіnЬοw", // hue: 116 + "ʀaіɴЬow", // hue: 116 + "rаinbοw", // hue: 122 + "ʀаіɴboѡ", // hue: 125 + "rаinbοѡ", // hue: 131 + "rainbow", // hue: 134 + "rаinЬοw", // hue: 134 + "ʀаiɴboѡ", // hue: 140 + "rainЬοѡ", // hue: 141 + "raіɴЬow", // hue: 143 + "ʀainЬoѡ", // hue: 143 + "ʀaіɴbow", // hue: 143 + "ʀainbow", // hue: 148 + "rаіɴboѡ", // hue: 149 + "ʀainboѡ", // hue: 155 + "ʀaіnbow", // hue: 155 + "ʀaіnЬow", // hue: 155 + "raiɴbοw", // hue: 158 + "ʀаiɴЬoѡ", // hue: 158 + "rainbοw", // hue: 160 + "rаinbow", // hue: 160 + "ʀaіɴbοѡ", // hue: 164 + "ʀаiɴbow", // hue: 164 + "ʀаіnЬoѡ", // hue: 164 + "ʀaiɴЬοѡ", // hue: 165 + "rаiɴboѡ", // hue: 167 + "ʀaіɴЬοw", // hue: 167 + "ʀaіɴЬοѡ", // hue: 171 + "raіnboѡ", // hue: 173 + "ʀаіɴЬoѡ", // hue: 173 + "rаіɴbοѡ", // hue: 176 + "ʀаinЬow", // hue: 176 + "rаiɴЬοѡ", // hue: 177 + "rаіɴЬοw", // hue: 179 + "ʀаinЬoѡ", // hue: 179 + "ʀаіɴbow", // hue: 179 + "rаiɴЬoѡ", // hue: 182 + "raіɴbοѡ", // hue: 188 + "rаіnЬoѡ", // hue: 188 + "raiɴЬοѡ", // hue: 189 + "raіɴЬοw", // hue: 191 + "ʀaіɴbοw", // hue: 191 + "ʀаіnЬow", // hue: 191 + "rainbοѡ", // hue: 194 + "rаinboѡ", // hue: 194 + "rаіnbow", // hue: 194 + "rainЬοw", // hue: 197 + "rаinЬoѡ", // hue: 206 + "rаіɴbow", // hue: 206 + "rаіɴЬοѡ", // hue: 210 + "ʀaiɴЬow", // hue: 212 + "raіɴbοw", // hue: 218 + "rаіnЬow", // hue: 218 + "ʀaiɴbοѡ", // hue: 221 + "ʀaiɴЬοw", // hue: 224 + "ʀaіnbοѡ", // hue: 227 + "raiɴboѡ", // hue: 230 + "ʀaіnbοw", // hue: 230 + "ʀaіnЬοw", // hue: 230 + "ʀаinЬοѡ", // hue: 231 + "rainboѡ", // hue: 232 + "raіnbow", // hue: 232 + "ʀаіɴЬow", // hue: 233 + "ʀaіɴЬoѡ", // hue: 239 + "ʀаіnЬοѡ", // hue: 246 + "raiɴbοѡ", // hue: 248 + "ʀаiɴЬow", // hue: 248 + "raіɴЬοѡ", // hue: 249 + "raiɴЬοw", // hue: 251 + "rаіɴЬoѡ", // hue: 251 + "ʀaiɴbow", // hue: 251 + "ʀаinbοw", // hue: 251 + "raіnbοѡ", // hue: 254 +]; diff --git a/src/tools/rustfmt/tests/source/configs/fn_args_layout/compressed.rs b/src/tools/rustfmt/tests/source/configs/fn_params_layout/compressed.rs index 66a371c259f..eb573d3121f 100644 --- a/src/tools/rustfmt/tests/source/configs/fn_args_layout/compressed.rs +++ b/src/tools/rustfmt/tests/source/configs/fn_params_layout/compressed.rs @@ -1,4 +1,4 @@ -// rustfmt-fn_args_layout: Compressed +// rustfmt-fn_params_layout: Compressed // Function arguments density trait Lorem { diff --git a/src/tools/rustfmt/tests/source/configs/fn_args_layout/tall.rs b/src/tools/rustfmt/tests/source/configs/fn_params_layout/tall.rs index f11e86fd313..4be34f0fe4a 100644 --- a/src/tools/rustfmt/tests/source/configs/fn_args_layout/tall.rs +++ b/src/tools/rustfmt/tests/source/configs/fn_params_layout/tall.rs @@ -1,4 +1,4 @@ -// rustfmt-fn_args_layout: Tall +// rustfmt-fn_params_layout: Tall // Function arguments density trait Lorem { diff --git a/src/tools/rustfmt/tests/source/configs/fn_args_layout/vertical.rs b/src/tools/rustfmt/tests/source/configs/fn_params_layout/vertical.rs index a23cc025225..674968023f9 100644 --- a/src/tools/rustfmt/tests/source/configs/fn_args_layout/vertical.rs +++ b/src/tools/rustfmt/tests/source/configs/fn_params_layout/vertical.rs @@ -1,4 +1,4 @@ -// rustfmt-fn_args_layout: Vertical +// rustfmt-fn_params_layout: Vertical // Function arguments density trait Lorem { diff --git a/src/tools/rustfmt/tests/source/enum.rs b/src/tools/rustfmt/tests/source/enum.rs index 0ed9651abe7..a7b9616929c 100644 --- a/src/tools/rustfmt/tests/source/enum.rs +++ b/src/tools/rustfmt/tests/source/enum.rs @@ -36,7 +36,7 @@ enum StructLikeVariants { Normal(u32, String, ), StructLike { x: i32, // Test comment // Pre-comment - #[Attr50] y: SomeType, // Aanother Comment + #[Attr50] y: SomeType, // Another Comment }, SL { a: A } } diff --git a/src/tools/rustfmt/tests/source/fn-custom-7.rs b/src/tools/rustfmt/tests/source/fn-custom-7.rs index d5330196bf7..3ecd8701727 100644 --- a/src/tools/rustfmt/tests/source/fn-custom-7.rs +++ b/src/tools/rustfmt/tests/source/fn-custom-7.rs @@ -1,5 +1,5 @@ // rustfmt-normalize_comments: true -// rustfmt-fn_args_layout: Vertical +// rustfmt-fn_params_layout: Vertical // rustfmt-brace_style: AlwaysNextLine // Case with only one variable. diff --git a/src/tools/rustfmt/tests/source/fn-custom.rs b/src/tools/rustfmt/tests/source/fn-custom.rs index 77ced4c5e0e..64ef0ecfaae 100644 --- a/src/tools/rustfmt/tests/source/fn-custom.rs +++ b/src/tools/rustfmt/tests/source/fn-custom.rs @@ -1,4 +1,4 @@ -// rustfmt-fn_args_layout: Compressed +// rustfmt-fn_params_layout: Compressed // Test some of the ways function signatures can be customised. // Test compressed layout of args. diff --git a/src/tools/rustfmt/tests/source/fn_args_layout-vertical.rs b/src/tools/rustfmt/tests/source/fn_args_layout-vertical.rs index 759bc83d015..fd6e3f0442e 100644 --- a/src/tools/rustfmt/tests/source/fn_args_layout-vertical.rs +++ b/src/tools/rustfmt/tests/source/fn_args_layout-vertical.rs @@ -1,4 +1,4 @@ -// rustfmt-fn_args_layout: Vertical +// rustfmt-fn_params_layout: Vertical // Empty list should stay on one line. fn do_bar( diff --git a/src/tools/rustfmt/tests/source/issue-3987/format_macro_bodies_true.rs b/src/tools/rustfmt/tests/source/issue-3987/format_macro_bodies_true.rs new file mode 100644 index 00000000000..9af114fbe57 --- /dev/null +++ b/src/tools/rustfmt/tests/source/issue-3987/format_macro_bodies_true.rs @@ -0,0 +1,26 @@ +// rustfmt-format_macro_bodies: true + +// with comments +macro_rules! macros { + () => {{ + Struct { + field: ( + 42 + //comment 1 + 42 + //comment 2 + ), + }; + }}; +} + +// without comments +macro_rules! macros { + () => {{ + Struct { + field: ( + 42 + + 42 + ), + }; + }}; +} diff --git a/src/tools/rustfmt/tests/source/issue-4643.rs b/src/tools/rustfmt/tests/source/issue-4643.rs new file mode 100644 index 00000000000..382072d9004 --- /dev/null +++ b/src/tools/rustfmt/tests/source/issue-4643.rs @@ -0,0 +1,23 @@ +// output doesn't get corrupted when using comments within generic type parameters of a trait + +pub trait Something< + A, + // some comment + B, + C +> { + fn a(&self, x: A) -> i32; + fn b(&self, x: B) -> i32; + fn c(&self, x: C) -> i32; +} + +pub trait SomethingElse< + A, + /* some comment */ + B, + C +> { + fn a(&self, x: A) -> i32; + fn b(&self, x: B) -> i32; + fn c(&self, x: C) -> i32; +} diff --git a/src/tools/rustfmt/tests/source/issue-4689/one.rs b/src/tools/rustfmt/tests/source/issue-4689/one.rs new file mode 100644 index 00000000000..d048eb10fb1 --- /dev/null +++ b/src/tools/rustfmt/tests/source/issue-4689/one.rs @@ -0,0 +1,149 @@ +// rustfmt-version: One + +// Based on the issue description +pub trait PrettyPrinter<'tcx>: +Printer< +'tcx, +Error = fmt::Error, +Path = Self, +Region = Self, +Type = Self, +DynExistential = Self, +Const = Self, +> +{ +// +} +pub trait PrettyPrinter<'tcx>: +Printer< +'tcx, +Error = fmt::Error, +Path = Self, +Region = Self, +Type = Self, +DynExistential = Self, +Const = Self, +> + fmt::Write +{ +// +} +pub trait PrettyPrinter<'tcx>: +Printer< +'tcx, +Error = fmt::Error, +Path = Self, +Region = Self, +Type = Self, +DynExistential = Self, +Const = Self, +> + fmt::Write1 + fmt::Write2 +{ +// +} +pub trait PrettyPrinter<'tcx>: +fmt::Write + Printer< +'tcx, +Error = fmt::Error, +Path = Self, +Region = Self, +Type = Self, +DynExistential = Self, +Const = Self, +> +{ +// +} +pub trait PrettyPrinter<'tcx>: +fmt::Write + Printer1< +'tcx, +Error = fmt::Error, +Path = Self, +Region = Self, +Type = Self, +DynExistential = Self, +Const = Self, +> + Printer2< +'tcx, +Error = fmt::Error, +Path = Self, +Region = Self, +Type = Self, +DynExistential = Self, +Const = Self, +> +{ +// +} + +// Some test cases to ensure other cases formatting were not changed +fn f() -> Box< +FnMut() -> Thing< +WithType = LongItemName, +Error = LONGLONGLONGLONGLONGONGEvenLongerErrorNameLongerLonger, +>, +> { +} +fn f() -> Box< +FnMut() -> Thing< +WithType = LongItemName, +Error = LONGLONGLONGLONGLONGONGEvenLongerErrorNameLongerLonger, +> + fmt::Write1 ++ fmt::Write2, +> { +} + +fn foo<F>(foo2: F) +where +F: Fn( +// this comment is deleted +) +{ +} +fn foo<F>(foo2: F) +where +F: Fn( +// this comment is deleted +) + fmt::Write +{ +} + +fn elaborate_bounds<F>(mut mk_cand: F) +where +F: for<> FnMut( +&mut ProbeContext<>, +ty::PolyTraitRefffffffffffffffffffffffffffffffff<>, +tyyyyyyyyyyyyyyyyyyyyy::AssociatedItem, +), +{ +} +fn elaborate_bounds<F>(mut mk_cand: F) +where +F: for<> FnMut( +&mut ProbeContext<>, +ty::PolyTraitRefffffffffffffffffffffffffffffffff<>, +tyyyyyyyyyyyyyyyyyyyyy::AssociatedItem, +) + fmt::Write, +{ +} + +fn build_sorted_static_get_entry_names( +mut entries: entryyyyyyyy, +) -> ( +impl Fn( +AlphabeticalTraversal, +Seconddddddddddddddddddddddddddddddddddd +) -> Parammmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm ++ Sendddddddddddddddddddddddddddddddddddddddddddd +) { +} + +pub trait SomeTrait: +Cloneeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee ++ Eqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq +{ +} + +trait B = where +for<'b> &'b Self: Send ++ Cloneeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee ++ Copyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy; diff --git a/src/tools/rustfmt/tests/source/issue-4689/two.rs b/src/tools/rustfmt/tests/source/issue-4689/two.rs new file mode 100644 index 00000000000..ea7feda825d --- /dev/null +++ b/src/tools/rustfmt/tests/source/issue-4689/two.rs @@ -0,0 +1,149 @@ +// rustfmt-version: Two + +// Based on the issue description +pub trait PrettyPrinter<'tcx>: +Printer< +'tcx, +Error = fmt::Error, +Path = Self, +Region = Self, +Type = Self, +DynExistential = Self, +Const = Self, +> +{ +// +} +pub trait PrettyPrinter<'tcx>: +Printer< +'tcx, +Error = fmt::Error, +Path = Self, +Region = Self, +Type = Self, +DynExistential = Self, +Const = Self, +> + fmt::Write +{ +// +} +pub trait PrettyPrinter<'tcx>: +Printer< +'tcx, +Error = fmt::Error, +Path = Self, +Region = Self, +Type = Self, +DynExistential = Self, +Const = Self, +> + fmt::Write1 + fmt::Write2 +{ +// +} +pub trait PrettyPrinter<'tcx>: +fmt::Write + Printer< +'tcx, +Error = fmt::Error, +Path = Self, +Region = Self, +Type = Self, +DynExistential = Self, +Const = Self, +> +{ +// +} +pub trait PrettyPrinter<'tcx>: +fmt::Write + Printer1< +'tcx, +Error = fmt::Error, +Path = Self, +Region = Self, +Type = Self, +DynExistential = Self, +Const = Self, +> + Printer2< +'tcx, +Error = fmt::Error, +Path = Self, +Region = Self, +Type = Self, +DynExistential = Self, +Const = Self, +> +{ +// +} + +// Some test cases to ensure other cases formatting were not changed +fn f() -> Box< +FnMut() -> Thing< +WithType = LongItemName, +Error = LONGLONGLONGLONGLONGONGEvenLongerErrorNameLongerLonger, +>, +> { +} +fn f() -> Box< +FnMut() -> Thing< +WithType = LongItemName, +Error = LONGLONGLONGLONGLONGONGEvenLongerErrorNameLongerLonger, +> + fmt::Write1 ++ fmt::Write2, +> { +} + +fn foo<F>(foo2: F) +where +F: Fn( +// this comment is deleted +) +{ +} +fn foo<F>(foo2: F) +where +F: Fn( +// this comment is deleted +) + fmt::Write +{ +} + +fn elaborate_bounds<F>(mut mk_cand: F) +where +F: for<> FnMut( +&mut ProbeContext<>, +ty::PolyTraitRefffffffffffffffffffffffffffffffff<>, +tyyyyyyyyyyyyyyyyyyyyy::AssociatedItem, +), +{ +} +fn elaborate_bounds<F>(mut mk_cand: F) +where +F: for<> FnMut( +&mut ProbeContext<>, +ty::PolyTraitRefffffffffffffffffffffffffffffffff<>, +tyyyyyyyyyyyyyyyyyyyyy::AssociatedItem, +) + fmt::Write, +{ +} + +fn build_sorted_static_get_entry_names( +mut entries: entryyyyyyyy, +) -> ( +impl Fn( +AlphabeticalTraversal, +Seconddddddddddddddddddddddddddddddddddd +) -> Parammmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm ++ Sendddddddddddddddddddddddddddddddddddddddddddd +) { +} + +pub trait SomeTrait: +Cloneeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee ++ Eqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq +{ +} + +trait B = where +for<'b> &'b Self: Send ++ Cloneeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee ++ Copyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy; diff --git a/src/tools/rustfmt/tests/source/issue_1306.rs b/src/tools/rustfmt/tests/source/issue_1306.rs new file mode 100644 index 00000000000..03b78e34108 --- /dev/null +++ b/src/tools/rustfmt/tests/source/issue_1306.rs @@ -0,0 +1,29 @@ +// rustfmt-max_width: 160 +// rustfmt-fn_call_width: 96 +// rustfmt-fn_args_layout: Compressed +// rustfmt-trailing_comma: Always +// rustfmt-wrap_comments: true + +fn foo() { + for elem in try!(gen_epub_book::ops::parse_descriptor_file(&mut try!(File::open(&opts.source_file.1).map_err(|_| { + gen_epub_book::Error::Io { + desc: "input file", + op: "open", + more: None, + } + })), + "input file")) { + println!("{}", elem); + } +} + +fn write_content() { + io::copy(try!(File::open(in_f).map_err(|_| { + Error::Io { + desc: "Content", + op: "open", + more: None, + } + })), + w); +} diff --git a/src/tools/rustfmt/tests/source/issue_3245.rs b/src/tools/rustfmt/tests/source/issue_3245.rs new file mode 100644 index 00000000000..0279246ed6a --- /dev/null +++ b/src/tools/rustfmt/tests/source/issue_3245.rs @@ -0,0 +1,4 @@ +fn main() { + let x = 1; + ;let y = 3; +} diff --git a/src/tools/rustfmt/tests/source/issue_3561.rs b/src/tools/rustfmt/tests/source/issue_3561.rs new file mode 100644 index 00000000000..8f6cd8f9fbc --- /dev/null +++ b/src/tools/rustfmt/tests/source/issue_3561.rs @@ -0,0 +1,6 @@ +fn main() {;7 +} + +fn main() { + ;7 +} diff --git a/src/tools/rustfmt/tests/source/skip_macro_invocations/all.rs b/src/tools/rustfmt/tests/source/skip_macro_invocations/all.rs new file mode 100644 index 00000000000..d0437ee10fd --- /dev/null +++ b/src/tools/rustfmt/tests/source/skip_macro_invocations/all.rs @@ -0,0 +1,11 @@ +// rustfmt-skip_macro_invocations: ["*"] + +// Should skip this invocation +items!( + const _: u8 = 0; +); + +// Should skip this invocation +renamed_items!( + const _: u8 = 0; +); diff --git a/src/tools/rustfmt/tests/source/skip_macro_invocations/all_and_name.rs b/src/tools/rustfmt/tests/source/skip_macro_invocations/all_and_name.rs new file mode 100644 index 00000000000..1f6722344fe --- /dev/null +++ b/src/tools/rustfmt/tests/source/skip_macro_invocations/all_and_name.rs @@ -0,0 +1,11 @@ +// rustfmt-skip_macro_invocations: ["*","items"] + +// Should skip this invocation +items!( + const _: u8 = 0; +); + +// Should also skip this invocation, as the wildcard covers it +renamed_items!( + const _: u8 = 0; +); diff --git a/src/tools/rustfmt/tests/source/skip_macro_invocations/empty.rs b/src/tools/rustfmt/tests/source/skip_macro_invocations/empty.rs new file mode 100644 index 00000000000..f3dd89dc4db --- /dev/null +++ b/src/tools/rustfmt/tests/source/skip_macro_invocations/empty.rs @@ -0,0 +1,11 @@ +// rustfmt-skip_macro_invocations: [] + +// Should not skip this invocation +items!( + const _: u8 = 0; +); + +// Should not skip this invocation +renamed_items!( + const _: u8 = 0; +); diff --git a/src/tools/rustfmt/tests/source/skip_macro_invocations/name.rs b/src/tools/rustfmt/tests/source/skip_macro_invocations/name.rs new file mode 100644 index 00000000000..7fa5d3a6f71 --- /dev/null +++ b/src/tools/rustfmt/tests/source/skip_macro_invocations/name.rs @@ -0,0 +1,11 @@ +// rustfmt-skip_macro_invocations: ["items"] + +// Should skip this invocation +items!( + const _: u8 = 0; +); + +// Should not skip this invocation +renamed_items!( + const _: u8 = 0; +); diff --git a/src/tools/rustfmt/tests/source/skip_macro_invocations/name_unknown.rs b/src/tools/rustfmt/tests/source/skip_macro_invocations/name_unknown.rs new file mode 100644 index 00000000000..d5669532524 --- /dev/null +++ b/src/tools/rustfmt/tests/source/skip_macro_invocations/name_unknown.rs @@ -0,0 +1,6 @@ +// rustfmt-skip_macro_invocations: ["unknown"] + +// Should not skip this invocation +items!( + const _: u8 = 0; +); diff --git a/src/tools/rustfmt/tests/source/skip_macro_invocations/names.rs b/src/tools/rustfmt/tests/source/skip_macro_invocations/names.rs new file mode 100644 index 00000000000..a920381a455 --- /dev/null +++ b/src/tools/rustfmt/tests/source/skip_macro_invocations/names.rs @@ -0,0 +1,16 @@ +// rustfmt-skip_macro_invocations: ["foo","bar"] + +// Should skip this invocation +foo!( + const _: u8 = 0; +); + +// Should skip this invocation +bar!( + const _: u8 = 0; +); + +// Should not skip this invocation +baz!( + const _: u8 = 0; +); diff --git a/src/tools/rustfmt/tests/source/skip_macro_invocations/path_qualified_invocation_mismatch.rs b/src/tools/rustfmt/tests/source/skip_macro_invocations/path_qualified_invocation_mismatch.rs new file mode 100644 index 00000000000..61296869a50 --- /dev/null +++ b/src/tools/rustfmt/tests/source/skip_macro_invocations/path_qualified_invocation_mismatch.rs @@ -0,0 +1,6 @@ +// rustfmt-skip_macro_invocations: ["items"] + +// Should not skip this invocation +self::items!( + const _: u8 = 0; +); diff --git a/src/tools/rustfmt/tests/source/skip_macro_invocations/path_qualified_match.rs b/src/tools/rustfmt/tests/source/skip_macro_invocations/path_qualified_match.rs new file mode 100644 index 00000000000..9398918a9e1 --- /dev/null +++ b/src/tools/rustfmt/tests/source/skip_macro_invocations/path_qualified_match.rs @@ -0,0 +1,6 @@ +// rustfmt-skip_macro_invocations: ["self::items"] + +// Should skip this invocation +self::items!( + const _: u8 = 0; +); diff --git a/src/tools/rustfmt/tests/source/skip_macro_invocations/path_qualified_name_mismatch.rs b/src/tools/rustfmt/tests/source/skip_macro_invocations/path_qualified_name_mismatch.rs new file mode 100644 index 00000000000..4e3eb542dbe --- /dev/null +++ b/src/tools/rustfmt/tests/source/skip_macro_invocations/path_qualified_name_mismatch.rs @@ -0,0 +1,6 @@ +// rustfmt-skip_macro_invocations: ["self::items"] + +// Should not skip this invocation +items!( + const _: u8 = 0; +); diff --git a/src/tools/rustfmt/tests/source/skip_macro_invocations/use_alias_examples.rs b/src/tools/rustfmt/tests/source/skip_macro_invocations/use_alias_examples.rs new file mode 100644 index 00000000000..43cb8015de5 --- /dev/null +++ b/src/tools/rustfmt/tests/source/skip_macro_invocations/use_alias_examples.rs @@ -0,0 +1,32 @@ +// rustfmt-skip_macro_invocations: ["aaa","ccc"] + +// These tests demonstrate a realistic use case with use aliases. +// The use statements should not impact functionality in any way. + +use crate::{aaa, bbb, ddd}; + +// No use alias, invocation in list +// Should skip this invocation +aaa!( + const _: u8 = 0; +); + +// Use alias, invocation in list +// Should skip this invocation +use crate::bbb as ccc; +ccc!( + const _: u8 = 0; +); + +// Use alias, invocation not in list +// Should not skip this invocation +use crate::ddd as eee; +eee!( + const _: u8 = 0; +); + +// No use alias, invocation not in list +// Should not skip this invocation +fff!( + const _: u8 = 0; +); diff --git a/src/tools/rustfmt/tests/source/tuple.rs b/src/tools/rustfmt/tests/source/tuple.rs index 9a0f979fbca..5189a7454f3 100644 --- a/src/tools/rustfmt/tests/source/tuple.rs +++ b/src/tools/rustfmt/tests/source/tuple.rs @@ -1,4 +1,4 @@ -// Test tuple litterals +// Test tuple literals fn foo() { let a = (a, a, a, a, a); diff --git a/src/tools/rustfmt/tests/source/wrap_comments_should_not_imply_format_doc_comments.rs b/src/tools/rustfmt/tests/source/wrap_comments_should_not_imply_format_doc_comments.rs index 78b3ce146f2..56064e4a4cc 100644 --- a/src/tools/rustfmt/tests/source/wrap_comments_should_not_imply_format_doc_comments.rs +++ b/src/tools/rustfmt/tests/source/wrap_comments_should_not_imply_format_doc_comments.rs @@ -11,6 +11,6 @@ /// fn foo() {} -/// A long commment for wrapping +/// A long comment for wrapping /// This is a long long long long long long long long long long long long long long long long long long long long sentence. fn bar() {} diff --git a/src/tools/rustfmt/tests/target/cfg_if/detect/arch/x86.rs b/src/tools/rustfmt/tests/target/cfg_if/detect/arch/x86.rs index 02d5eed1c29..47210cae2aa 100644 --- a/src/tools/rustfmt/tests/target/cfg_if/detect/arch/x86.rs +++ b/src/tools/rustfmt/tests/target/cfg_if/detect/arch/x86.rs @@ -314,7 +314,7 @@ pub enum Feature { tbm, /// POPCNT (Population Count) popcnt, - /// FXSR (Floating-point context fast save and restor) + /// FXSR (Floating-point context fast save and restore) fxsr, /// XSAVE (Save Processor Extended States) xsave, diff --git a/src/tools/rustfmt/tests/target/comments_unicode.rs b/src/tools/rustfmt/tests/target/comments_unicode.rs new file mode 100644 index 00000000000..3e1b6b0a28f --- /dev/null +++ b/src/tools/rustfmt/tests/target/comments_unicode.rs @@ -0,0 +1,140 @@ +impl Default for WhitespaceCharacters { + fn default() -> Self { + Self { + space: '·', // U+00B7 + nbsp: '⍽', // U+237D + tab: '→', // U+2192 + newline: '⏎', // U+23CE + } + } +} + +const RAINBOWS: &[&str] = &[ + "rаinЬοѡ", // hue: 0 + "raіnЬοw", // hue: 2 + "rаіɴЬow", // hue: 2 + "raіɴЬoѡ", // hue: 8 + "ʀainЬow", // hue: 8 + "ʀaіɴboѡ", // hue: 8 + "ʀаіnbοw", // hue: 11 + "rainЬoѡ", // hue: 14 + "raіɴbow", // hue: 14 + "rаiɴЬow", // hue: 20 + "raіnЬow", // hue: 26 + "ʀaiɴbοw", // hue: 32 + "raіɴboѡ", // hue: 35 + "rаiɴbow", // hue: 35 + "rаіnbοw", // hue: 38 + "rаinЬow", // hue: 47 + "ʀaіnboѡ", // hue: 47 + "ʀaіnЬoѡ", // hue: 47 + "ʀаіɴbοw", // hue: 53 + "ʀaіnЬοѡ", // hue: 57 + "raiɴЬoѡ", // hue: 68 + "ʀainbοѡ", // hue: 68 + "ʀаinboѡ", // hue: 68 + "ʀаiɴbοw", // hue: 68 + "ʀаіnbow", // hue: 68 + "rаіnЬοѡ", // hue: 69 + "ʀainЬοw", // hue: 71 + "raiɴbow", // hue: 73 + "raіnЬoѡ", // hue: 74 + "rаіɴbοw", // hue: 77 + "raіnЬοѡ", // hue: 81 + "raiɴЬow", // hue: 83 + "ʀainbοw", // hue: 83 + "ʀаinbow", // hue: 83 + "ʀаiɴbοѡ", // hue: 83 + "ʀаіnboѡ", // hue: 83 + "ʀаіɴЬοѡ", // hue: 84 + "rainЬow", // hue: 85 + "ʀаiɴЬοw", // hue: 86 + "ʀаіnbοѡ", // hue: 89 + "ʀаіnЬοw", // hue: 92 + "rаiɴbοw", // hue: 95 + "ʀаіɴbοѡ", // hue: 98 + "ʀаiɴЬοѡ", // hue: 99 + "raіnbοw", // hue: 101 + "ʀаіɴЬοw", // hue: 101 + "ʀaiɴboѡ", // hue: 104 + "ʀаinbοѡ", // hue: 104 + "rаiɴbοѡ", // hue: 107 + "ʀаinЬοw", // hue: 107 + "rаiɴЬοw", // hue: 110 + "rаіnboѡ", // hue: 110 + "rаіnbοѡ", // hue: 113 + "ʀainЬοѡ", // hue: 114 + "rаіnЬοw", // hue: 116 + "ʀaіɴЬow", // hue: 116 + "rаinbοw", // hue: 122 + "ʀаіɴboѡ", // hue: 125 + "rаinbοѡ", // hue: 131 + "rainbow", // hue: 134 + "rаinЬοw", // hue: 134 + "ʀаiɴboѡ", // hue: 140 + "rainЬοѡ", // hue: 141 + "raіɴЬow", // hue: 143 + "ʀainЬoѡ", // hue: 143 + "ʀaіɴbow", // hue: 143 + "ʀainbow", // hue: 148 + "rаіɴboѡ", // hue: 149 + "ʀainboѡ", // hue: 155 + "ʀaіnbow", // hue: 155 + "ʀaіnЬow", // hue: 155 + "raiɴbοw", // hue: 158 + "ʀаiɴЬoѡ", // hue: 158 + "rainbοw", // hue: 160 + "rаinbow", // hue: 160 + "ʀaіɴbοѡ", // hue: 164 + "ʀаiɴbow", // hue: 164 + "ʀаіnЬoѡ", // hue: 164 + "ʀaiɴЬοѡ", // hue: 165 + "rаiɴboѡ", // hue: 167 + "ʀaіɴЬοw", // hue: 167 + "ʀaіɴЬοѡ", // hue: 171 + "raіnboѡ", // hue: 173 + "ʀаіɴЬoѡ", // hue: 173 + "rаіɴbοѡ", // hue: 176 + "ʀаinЬow", // hue: 176 + "rаiɴЬοѡ", // hue: 177 + "rаіɴЬοw", // hue: 179 + "ʀаinЬoѡ", // hue: 179 + "ʀаіɴbow", // hue: 179 + "rаiɴЬoѡ", // hue: 182 + "raіɴbοѡ", // hue: 188 + "rаіnЬoѡ", // hue: 188 + "raiɴЬοѡ", // hue: 189 + "raіɴЬοw", // hue: 191 + "ʀaіɴbοw", // hue: 191 + "ʀаіnЬow", // hue: 191 + "rainbοѡ", // hue: 194 + "rаinboѡ", // hue: 194 + "rаіnbow", // hue: 194 + "rainЬοw", // hue: 197 + "rаinЬoѡ", // hue: 206 + "rаіɴbow", // hue: 206 + "rаіɴЬοѡ", // hue: 210 + "ʀaiɴЬow", // hue: 212 + "raіɴbοw", // hue: 218 + "rаіnЬow", // hue: 218 + "ʀaiɴbοѡ", // hue: 221 + "ʀaiɴЬοw", // hue: 224 + "ʀaіnbοѡ", // hue: 227 + "raiɴboѡ", // hue: 230 + "ʀaіnbοw", // hue: 230 + "ʀaіnЬοw", // hue: 230 + "ʀаinЬοѡ", // hue: 231 + "rainboѡ", // hue: 232 + "raіnbow", // hue: 232 + "ʀаіɴЬow", // hue: 233 + "ʀaіɴЬoѡ", // hue: 239 + "ʀаіnЬοѡ", // hue: 246 + "raiɴbοѡ", // hue: 248 + "ʀаiɴЬow", // hue: 248 + "raіɴЬοѡ", // hue: 249 + "raiɴЬοw", // hue: 251 + "rаіɴЬoѡ", // hue: 251 + "ʀaiɴbow", // hue: 251 + "ʀаinbοw", // hue: 251 + "raіnbοѡ", // hue: 254 +]; diff --git a/src/tools/rustfmt/tests/target/configs/fn_args_layout/compressed.rs b/src/tools/rustfmt/tests/target/configs/fn_params_layout/compressed.rs index f189446e25d..ff32f0f1d58 100644 --- a/src/tools/rustfmt/tests/target/configs/fn_args_layout/compressed.rs +++ b/src/tools/rustfmt/tests/target/configs/fn_params_layout/compressed.rs @@ -1,4 +1,4 @@ -// rustfmt-fn_args_layout: Compressed +// rustfmt-fn_params_layout: Compressed // Function arguments density trait Lorem { diff --git a/src/tools/rustfmt/tests/target/configs/fn_args_layout/tall.rs b/src/tools/rustfmt/tests/target/configs/fn_params_layout/tall.rs index 20f308973ac..25a86799af0 100644 --- a/src/tools/rustfmt/tests/target/configs/fn_args_layout/tall.rs +++ b/src/tools/rustfmt/tests/target/configs/fn_params_layout/tall.rs @@ -1,4 +1,4 @@ -// rustfmt-fn_args_layout: Tall +// rustfmt-fn_params_layout: Tall // Function arguments density trait Lorem { diff --git a/src/tools/rustfmt/tests/target/configs/fn_args_layout/vertical.rs b/src/tools/rustfmt/tests/target/configs/fn_params_layout/vertical.rs index 6c695a75df9..7a0e42415f3 100644 --- a/src/tools/rustfmt/tests/target/configs/fn_args_layout/vertical.rs +++ b/src/tools/rustfmt/tests/target/configs/fn_params_layout/vertical.rs @@ -1,4 +1,4 @@ -// rustfmt-fn_args_layout: Vertical +// rustfmt-fn_params_layout: Vertical // Function arguments density trait Lorem { diff --git a/src/tools/rustfmt/tests/target/enum.rs b/src/tools/rustfmt/tests/target/enum.rs index 9a25126b44e..70fc8ab376c 100644 --- a/src/tools/rustfmt/tests/target/enum.rs +++ b/src/tools/rustfmt/tests/target/enum.rs @@ -43,7 +43,7 @@ enum StructLikeVariants { x: i32, // Test comment // Pre-comment #[Attr50] - y: SomeType, // Aanother Comment + y: SomeType, // Another Comment }, SL { a: A, diff --git a/src/tools/rustfmt/tests/target/fn-custom-7.rs b/src/tools/rustfmt/tests/target/fn-custom-7.rs index 2c20ac5a752..f6a1a90c3fc 100644 --- a/src/tools/rustfmt/tests/target/fn-custom-7.rs +++ b/src/tools/rustfmt/tests/target/fn-custom-7.rs @@ -1,5 +1,5 @@ // rustfmt-normalize_comments: true -// rustfmt-fn_args_layout: Vertical +// rustfmt-fn_params_layout: Vertical // rustfmt-brace_style: AlwaysNextLine // Case with only one variable. diff --git a/src/tools/rustfmt/tests/target/fn-custom.rs b/src/tools/rustfmt/tests/target/fn-custom.rs index 2eb2a973d24..506d9de3437 100644 --- a/src/tools/rustfmt/tests/target/fn-custom.rs +++ b/src/tools/rustfmt/tests/target/fn-custom.rs @@ -1,4 +1,4 @@ -// rustfmt-fn_args_layout: Compressed +// rustfmt-fn_params_layout: Compressed // Test some of the ways function signatures can be customised. // Test compressed layout of args. diff --git a/src/tools/rustfmt/tests/target/fn_args_layout-vertical.rs b/src/tools/rustfmt/tests/target/fn_args_layout-vertical.rs index da0ac981d87..bfeca15c967 100644 --- a/src/tools/rustfmt/tests/target/fn_args_layout-vertical.rs +++ b/src/tools/rustfmt/tests/target/fn_args_layout-vertical.rs @@ -1,4 +1,4 @@ -// rustfmt-fn_args_layout: Vertical +// rustfmt-fn_params_layout: Vertical // Empty list should stay on one line. fn do_bar() -> u8 { diff --git a/src/tools/rustfmt/tests/target/issue-2534/format_macro_matchers_false.rs b/src/tools/rustfmt/tests/target/issue-2534/format_macro_matchers_false.rs new file mode 100644 index 00000000000..2038ed7f1d0 --- /dev/null +++ b/src/tools/rustfmt/tests/target/issue-2534/format_macro_matchers_false.rs @@ -0,0 +1,6 @@ +// rustfmt-format_macro_matchers: false + +macro_rules! foo { + ($a:ident : $b:ty) => {}; + ($a:ident $b:ident $c:ident) => {}; +} diff --git a/src/tools/rustfmt/tests/target/issue-2534/format_macro_matchers_true.rs b/src/tools/rustfmt/tests/target/issue-2534/format_macro_matchers_true.rs new file mode 100644 index 00000000000..01d939add4d --- /dev/null +++ b/src/tools/rustfmt/tests/target/issue-2534/format_macro_matchers_true.rs @@ -0,0 +1,6 @@ +// rustfmt-format_macro_matchers: true + +macro_rules! foo { + ($a:ident : $b:ty) => {}; + ($a:ident $b:ident $c:ident) => {}; +} diff --git a/src/tools/rustfmt/tests/target/issue-3987/format_macro_bodies_false.rs b/src/tools/rustfmt/tests/target/issue-3987/format_macro_bodies_false.rs new file mode 100644 index 00000000000..1352b762e45 --- /dev/null +++ b/src/tools/rustfmt/tests/target/issue-3987/format_macro_bodies_false.rs @@ -0,0 +1,26 @@ +// rustfmt-format_macro_bodies: false + +// with comments +macro_rules! macros { + () => {{ + Struct { + field: ( + 42 + //comment 1 + 42 + //comment 2 + ), + }; + }}; +} + +// without comments +macro_rules! macros { + () => {{ + Struct { + field: ( + 42 + + 42 + ), + }; + }}; +} diff --git a/src/tools/rustfmt/tests/target/issue-3987/format_macro_bodies_true.rs b/src/tools/rustfmt/tests/target/issue-3987/format_macro_bodies_true.rs new file mode 100644 index 00000000000..88d57159c85 --- /dev/null +++ b/src/tools/rustfmt/tests/target/issue-3987/format_macro_bodies_true.rs @@ -0,0 +1,21 @@ +// rustfmt-format_macro_bodies: true + +// with comments +macro_rules! macros { + () => {{ + Struct { + field: ( + 42 + //comment 1 + 42 + //comment 2 + ), + }; + }}; +} + +// without comments +macro_rules! macros { + () => {{ + Struct { field: (42 + 42) }; + }}; +} diff --git a/src/tools/rustfmt/tests/target/issue-4643.rs b/src/tools/rustfmt/tests/target/issue-4643.rs new file mode 100644 index 00000000000..ef99e4db382 --- /dev/null +++ b/src/tools/rustfmt/tests/target/issue-4643.rs @@ -0,0 +1,19 @@ +// output doesn't get corrupted when using comments within generic type parameters of a trait + +pub trait Something< + A, + // some comment + B, + C, +> +{ + fn a(&self, x: A) -> i32; + fn b(&self, x: B) -> i32; + fn c(&self, x: C) -> i32; +} + +pub trait SomethingElse<A, /* some comment */ B, C> { + fn a(&self, x: A) -> i32; + fn b(&self, x: B) -> i32; + fn c(&self, x: C) -> i32; +} diff --git a/src/tools/rustfmt/tests/target/issue-4689/one.rs b/src/tools/rustfmt/tests/target/issue-4689/one.rs new file mode 100644 index 00000000000..7735e34f3b5 --- /dev/null +++ b/src/tools/rustfmt/tests/target/issue-4689/one.rs @@ -0,0 +1,150 @@ +// rustfmt-version: One + +// Based on the issue description +pub trait PrettyPrinter<'tcx>: + Printer< + 'tcx, + Error = fmt::Error, + Path = Self, + Region = Self, + Type = Self, + DynExistential = Self, + Const = Self, +> +{ + // +} +pub trait PrettyPrinter<'tcx>: + Printer< + 'tcx, + Error = fmt::Error, + Path = Self, + Region = Self, + Type = Self, + DynExistential = Self, + Const = Self, + > + fmt::Write +{ + // +} +pub trait PrettyPrinter<'tcx>: + Printer< + 'tcx, + Error = fmt::Error, + Path = Self, + Region = Self, + Type = Self, + DynExistential = Self, + Const = Self, + > + fmt::Write1 + + fmt::Write2 +{ + // +} +pub trait PrettyPrinter<'tcx>: + fmt::Write + + Printer< + 'tcx, + Error = fmt::Error, + Path = Self, + Region = Self, + Type = Self, + DynExistential = Self, + Const = Self, + > +{ + // +} +pub trait PrettyPrinter<'tcx>: + fmt::Write + + Printer1< + 'tcx, + Error = fmt::Error, + Path = Self, + Region = Self, + Type = Self, + DynExistential = Self, + Const = Self, + > + Printer2< + 'tcx, + Error = fmt::Error, + Path = Self, + Region = Self, + Type = Self, + DynExistential = Self, + Const = Self, + > +{ + // +} + +// Some test cases to ensure other cases formatting were not changed +fn f() -> Box< + FnMut() -> Thing< + WithType = LongItemName, + Error = LONGLONGLONGLONGLONGONGEvenLongerErrorNameLongerLonger, + >, +> { +} +fn f() -> Box< + FnMut() -> Thing< + WithType = LongItemName, + Error = LONGLONGLONGLONGLONGONGEvenLongerErrorNameLongerLonger, + > + fmt::Write1 + + fmt::Write2, +> { +} + +fn foo<F>(foo2: F) +where + F: Fn( + // this comment is deleted + ), +{ +} +fn foo<F>(foo2: F) +where + F: Fn( + // this comment is deleted + ) + fmt::Write, +{ +} + +fn elaborate_bounds<F>(mut mk_cand: F) +where + F: FnMut( + &mut ProbeContext, + ty::PolyTraitRefffffffffffffffffffffffffffffffff, + tyyyyyyyyyyyyyyyyyyyyy::AssociatedItem, + ), +{ +} +fn elaborate_bounds<F>(mut mk_cand: F) +where + F: FnMut( + &mut ProbeContext, + ty::PolyTraitRefffffffffffffffffffffffffffffffff, + tyyyyyyyyyyyyyyyyyyyyy::AssociatedItem, + ) + fmt::Write, +{ +} + +fn build_sorted_static_get_entry_names( + mut entries: entryyyyyyyy, +) -> (impl Fn( + AlphabeticalTraversal, + Seconddddddddddddddddddddddddddddddddddd, +) -> Parammmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm + + Sendddddddddddddddddddddddddddddddddddddddddddd) { +} + +pub trait SomeTrait: + Cloneeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee + + Eqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq +{ +} + +trait B = where + for<'b> &'b Self: Send + + Cloneeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee + + Copyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy; diff --git a/src/tools/rustfmt/tests/target/issue-4689/two.rs b/src/tools/rustfmt/tests/target/issue-4689/two.rs new file mode 100644 index 00000000000..e3b5cd22810 --- /dev/null +++ b/src/tools/rustfmt/tests/target/issue-4689/two.rs @@ -0,0 +1,152 @@ +// rustfmt-version: Two + +// Based on the issue description +pub trait PrettyPrinter<'tcx>: + Printer< + 'tcx, + Error = fmt::Error, + Path = Self, + Region = Self, + Type = Self, + DynExistential = Self, + Const = Self, + > +{ + // +} +pub trait PrettyPrinter<'tcx>: + Printer< + 'tcx, + Error = fmt::Error, + Path = Self, + Region = Self, + Type = Self, + DynExistential = Self, + Const = Self, + > + fmt::Write +{ + // +} +pub trait PrettyPrinter<'tcx>: + Printer< + 'tcx, + Error = fmt::Error, + Path = Self, + Region = Self, + Type = Self, + DynExistential = Self, + Const = Self, + > + fmt::Write1 + + fmt::Write2 +{ + // +} +pub trait PrettyPrinter<'tcx>: + fmt::Write + + Printer< + 'tcx, + Error = fmt::Error, + Path = Self, + Region = Self, + Type = Self, + DynExistential = Self, + Const = Self, + > +{ + // +} +pub trait PrettyPrinter<'tcx>: + fmt::Write + + Printer1< + 'tcx, + Error = fmt::Error, + Path = Self, + Region = Self, + Type = Self, + DynExistential = Self, + Const = Self, + > + Printer2< + 'tcx, + Error = fmt::Error, + Path = Self, + Region = Self, + Type = Self, + DynExistential = Self, + Const = Self, + > +{ + // +} + +// Some test cases to ensure other cases formatting were not changed +fn f() -> Box< + FnMut() -> Thing< + WithType = LongItemName, + Error = LONGLONGLONGLONGLONGONGEvenLongerErrorNameLongerLonger, + >, +> { +} +fn f() -> Box< + FnMut() -> Thing< + WithType = LongItemName, + Error = LONGLONGLONGLONGLONGONGEvenLongerErrorNameLongerLonger, + > + fmt::Write1 + + fmt::Write2, +> { +} + +fn foo<F>(foo2: F) +where + F: Fn( + // this comment is deleted + ), +{ +} +fn foo<F>(foo2: F) +where + F: Fn( + // this comment is deleted + ) + fmt::Write, +{ +} + +fn elaborate_bounds<F>(mut mk_cand: F) +where + F: FnMut( + &mut ProbeContext, + ty::PolyTraitRefffffffffffffffffffffffffffffffff, + tyyyyyyyyyyyyyyyyyyyyy::AssociatedItem, + ), +{ +} +fn elaborate_bounds<F>(mut mk_cand: F) +where + F: FnMut( + &mut ProbeContext, + ty::PolyTraitRefffffffffffffffffffffffffffffffff, + tyyyyyyyyyyyyyyyyyyyyy::AssociatedItem, + ) + fmt::Write, +{ +} + +fn build_sorted_static_get_entry_names( + mut entries: entryyyyyyyy, +) -> ( + impl Fn( + AlphabeticalTraversal, + Seconddddddddddddddddddddddddddddddddddd, + ) -> Parammmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm + + Sendddddddddddddddddddddddddddddddddddddddddddd +) { +} + +pub trait SomeTrait: + Cloneeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee + + Eqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq +{ +} + +trait B = where + for<'b> &'b Self: Send + + Cloneeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee + + Copyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy; diff --git a/src/tools/rustfmt/tests/target/issue-4791/issue_4928.rs b/src/tools/rustfmt/tests/target/issue-4791/issue_4928.rs index 588656b535f..29f6bda9063 100644 --- a/src/tools/rustfmt/tests/target/issue-4791/issue_4928.rs +++ b/src/tools/rustfmt/tests/target/issue-4791/issue_4928.rs @@ -1,7 +1,7 @@ // rustfmt-brace_style: SameLineWhere // rustfmt-comment_width: 100 // rustfmt-edition: 2018 -// rustfmt-fn_args_layout: Compressed +// rustfmt-fn_params_layout: Compressed // rustfmt-hard_tabs: false // rustfmt-match_block_trailing_comma: true // rustfmt-max_width: 100 diff --git a/src/tools/rustfmt/tests/target/issue-5358.rs b/src/tools/rustfmt/tests/target/issue-5358.rs new file mode 100644 index 00000000000..d4bf4909ad7 --- /dev/null +++ b/src/tools/rustfmt/tests/target/issue-5358.rs @@ -0,0 +1,4 @@ +// Test /* comment */ inside trait generics does not get duplicated. +trait Test</* comment */ T> {} + +trait TestTwo</* comment */ T, /* comment */ V> {} diff --git a/src/tools/rustfmt/tests/target/issue_1306.rs b/src/tools/rustfmt/tests/target/issue_1306.rs new file mode 100644 index 00000000000..6bb514cdfe5 --- /dev/null +++ b/src/tools/rustfmt/tests/target/issue_1306.rs @@ -0,0 +1,33 @@ +// rustfmt-max_width: 160 +// rustfmt-fn_call_width: 96 +// rustfmt-fn_args_layout: Compressed +// rustfmt-trailing_comma: Always +// rustfmt-wrap_comments: true + +fn foo() { + for elem in try!(gen_epub_book::ops::parse_descriptor_file( + &mut try!(File::open(&opts.source_file.1).map_err(|_| { + gen_epub_book::Error::Io { + desc: "input file", + op: "open", + more: None, + } + })), + "input file" + )) { + println!("{}", elem); + } +} + +fn write_content() { + io::copy( + try!(File::open(in_f).map_err(|_| { + Error::Io { + desc: "Content", + op: "open", + more: None, + } + })), + w, + ); +} diff --git a/src/tools/rustfmt/tests/target/issue_3033.rs b/src/tools/rustfmt/tests/target/issue_3033.rs new file mode 100644 index 00000000000..e12249a6da6 --- /dev/null +++ b/src/tools/rustfmt/tests/target/issue_3033.rs @@ -0,0 +1,2 @@ +use dom::bindings::codegen::Bindings::BluetoothRemoteGATTServerBinding::BluetoothRemoteGATTServerBinding:: + BluetoothRemoteGATTServerMethods; diff --git a/src/tools/rustfmt/tests/target/issue_3245.rs b/src/tools/rustfmt/tests/target/issue_3245.rs new file mode 100644 index 00000000000..8f442f1181a --- /dev/null +++ b/src/tools/rustfmt/tests/target/issue_3245.rs @@ -0,0 +1,4 @@ +fn main() { + let x = 1; + let y = 3; +} diff --git a/src/tools/rustfmt/tests/target/issue_3561.rs b/src/tools/rustfmt/tests/target/issue_3561.rs new file mode 100644 index 00000000000..846a14d86a5 --- /dev/null +++ b/src/tools/rustfmt/tests/target/issue_3561.rs @@ -0,0 +1,7 @@ +fn main() { + 7 +} + +fn main() { + 7 +} diff --git a/src/tools/rustfmt/tests/target/issue_4350.rs b/src/tools/rustfmt/tests/target/issue_4350.rs new file mode 100644 index 00000000000..a94c5c32188 --- /dev/null +++ b/src/tools/rustfmt/tests/target/issue_4350.rs @@ -0,0 +1,13 @@ +//rustfmt-format_macro_bodies: true + +macro_rules! mto_text_left { + ($buf:ident, $n:ident, $pos:ident, $state:ident) => {{ + let cursor = loop { + state = match iter.next() { + None if $pos == DP::Start => break last_char_idx($buf), + None /*some comment */ => break 0, + }; + }; + Ok(saturate_cursor($buf, cursor)) + }}; +} diff --git a/src/tools/rustfmt/tests/target/issue_5668.rs b/src/tools/rustfmt/tests/target/issue_5668.rs new file mode 100644 index 00000000000..bbd9a530b81 --- /dev/null +++ b/src/tools/rustfmt/tests/target/issue_5668.rs @@ -0,0 +1,8 @@ +type Foo = impl Send; +struct Struct< + const C: usize = { + let _: Foo = (); + //~^ ERROR: mismatched types + 0 + }, +>; diff --git a/src/tools/rustfmt/tests/target/skip_macro_invocations/all.rs b/src/tools/rustfmt/tests/target/skip_macro_invocations/all.rs new file mode 100644 index 00000000000..d0437ee10fd --- /dev/null +++ b/src/tools/rustfmt/tests/target/skip_macro_invocations/all.rs @@ -0,0 +1,11 @@ +// rustfmt-skip_macro_invocations: ["*"] + +// Should skip this invocation +items!( + const _: u8 = 0; +); + +// Should skip this invocation +renamed_items!( + const _: u8 = 0; +); diff --git a/src/tools/rustfmt/tests/target/skip_macro_invocations/all_and_name.rs b/src/tools/rustfmt/tests/target/skip_macro_invocations/all_and_name.rs new file mode 100644 index 00000000000..1f6722344fe --- /dev/null +++ b/src/tools/rustfmt/tests/target/skip_macro_invocations/all_and_name.rs @@ -0,0 +1,11 @@ +// rustfmt-skip_macro_invocations: ["*","items"] + +// Should skip this invocation +items!( + const _: u8 = 0; +); + +// Should also skip this invocation, as the wildcard covers it +renamed_items!( + const _: u8 = 0; +); diff --git a/src/tools/rustfmt/tests/target/skip_macro_invocations/empty.rs b/src/tools/rustfmt/tests/target/skip_macro_invocations/empty.rs new file mode 100644 index 00000000000..4a398cc59c6 --- /dev/null +++ b/src/tools/rustfmt/tests/target/skip_macro_invocations/empty.rs @@ -0,0 +1,11 @@ +// rustfmt-skip_macro_invocations: [] + +// Should not skip this invocation +items!( + const _: u8 = 0; +); + +// Should not skip this invocation +renamed_items!( + const _: u8 = 0; +); diff --git a/src/tools/rustfmt/tests/target/skip_macro_invocations/name.rs b/src/tools/rustfmt/tests/target/skip_macro_invocations/name.rs new file mode 100644 index 00000000000..c4d577269c6 --- /dev/null +++ b/src/tools/rustfmt/tests/target/skip_macro_invocations/name.rs @@ -0,0 +1,11 @@ +// rustfmt-skip_macro_invocations: ["items"] + +// Should skip this invocation +items!( + const _: u8 = 0; +); + +// Should not skip this invocation +renamed_items!( + const _: u8 = 0; +); diff --git a/src/tools/rustfmt/tests/target/skip_macro_invocations/name_unknown.rs b/src/tools/rustfmt/tests/target/skip_macro_invocations/name_unknown.rs new file mode 100644 index 00000000000..7ab1440395c --- /dev/null +++ b/src/tools/rustfmt/tests/target/skip_macro_invocations/name_unknown.rs @@ -0,0 +1,6 @@ +// rustfmt-skip_macro_invocations: ["unknown"] + +// Should not skip this invocation +items!( + const _: u8 = 0; +); diff --git a/src/tools/rustfmt/tests/target/skip_macro_invocations/names.rs b/src/tools/rustfmt/tests/target/skip_macro_invocations/names.rs new file mode 100644 index 00000000000..c6b41ff93d7 --- /dev/null +++ b/src/tools/rustfmt/tests/target/skip_macro_invocations/names.rs @@ -0,0 +1,16 @@ +// rustfmt-skip_macro_invocations: ["foo","bar"] + +// Should skip this invocation +foo!( + const _: u8 = 0; +); + +// Should skip this invocation +bar!( + const _: u8 = 0; +); + +// Should not skip this invocation +baz!( + const _: u8 = 0; +); diff --git a/src/tools/rustfmt/tests/target/skip_macro_invocations/path_qualified_invocation_mismatch.rs b/src/tools/rustfmt/tests/target/skip_macro_invocations/path_qualified_invocation_mismatch.rs new file mode 100644 index 00000000000..6e372c72695 --- /dev/null +++ b/src/tools/rustfmt/tests/target/skip_macro_invocations/path_qualified_invocation_mismatch.rs @@ -0,0 +1,6 @@ +// rustfmt-skip_macro_invocations: ["items"] + +// Should not skip this invocation +self::items!( + const _: u8 = 0; +); diff --git a/src/tools/rustfmt/tests/target/skip_macro_invocations/path_qualified_match.rs b/src/tools/rustfmt/tests/target/skip_macro_invocations/path_qualified_match.rs new file mode 100644 index 00000000000..9398918a9e1 --- /dev/null +++ b/src/tools/rustfmt/tests/target/skip_macro_invocations/path_qualified_match.rs @@ -0,0 +1,6 @@ +// rustfmt-skip_macro_invocations: ["self::items"] + +// Should skip this invocation +self::items!( + const _: u8 = 0; +); diff --git a/src/tools/rustfmt/tests/target/skip_macro_invocations/path_qualified_name_mismatch.rs b/src/tools/rustfmt/tests/target/skip_macro_invocations/path_qualified_name_mismatch.rs new file mode 100644 index 00000000000..aa57a2a655c --- /dev/null +++ b/src/tools/rustfmt/tests/target/skip_macro_invocations/path_qualified_name_mismatch.rs @@ -0,0 +1,6 @@ +// rustfmt-skip_macro_invocations: ["self::items"] + +// Should not skip this invocation +items!( + const _: u8 = 0; +); diff --git a/src/tools/rustfmt/tests/target/skip_macro_invocations/use_alias_examples.rs b/src/tools/rustfmt/tests/target/skip_macro_invocations/use_alias_examples.rs new file mode 100644 index 00000000000..799dd8c08af --- /dev/null +++ b/src/tools/rustfmt/tests/target/skip_macro_invocations/use_alias_examples.rs @@ -0,0 +1,32 @@ +// rustfmt-skip_macro_invocations: ["aaa","ccc"] + +// These tests demonstrate a realistic use case with use aliases. +// The use statements should not impact functionality in any way. + +use crate::{aaa, bbb, ddd}; + +// No use alias, invocation in list +// Should skip this invocation +aaa!( + const _: u8 = 0; +); + +// Use alias, invocation in list +// Should skip this invocation +use crate::bbb as ccc; +ccc!( + const _: u8 = 0; +); + +// Use alias, invocation not in list +// Should not skip this invocation +use crate::ddd as eee; +eee!( + const _: u8 = 0; +); + +// No use alias, invocation not in list +// Should not skip this invocation +fff!( + const _: u8 = 0; +); diff --git a/src/tools/rustfmt/tests/target/tuple.rs b/src/tools/rustfmt/tests/target/tuple.rs index 68bb2f3bc28..24fcf8cfd7c 100644 --- a/src/tools/rustfmt/tests/target/tuple.rs +++ b/src/tools/rustfmt/tests/target/tuple.rs @@ -1,4 +1,4 @@ -// Test tuple litterals +// Test tuple literals fn foo() { let a = (a, a, a, a, a); diff --git a/src/tools/rustfmt/tests/target/wrap_comments_should_not_imply_format_doc_comments.rs b/src/tools/rustfmt/tests/target/wrap_comments_should_not_imply_format_doc_comments.rs index d61d4d7c216..6ccecc7e0bb 100644 --- a/src/tools/rustfmt/tests/target/wrap_comments_should_not_imply_format_doc_comments.rs +++ b/src/tools/rustfmt/tests/target/wrap_comments_should_not_imply_format_doc_comments.rs @@ -10,7 +10,7 @@ /// ``` fn foo() {} -/// A long commment for wrapping +/// A long comment for wrapping /// This is a long long long long long long long long long long long long long /// long long long long long long long sentence. fn bar() {} diff --git a/src/tools/tidy/Cargo.toml b/src/tools/tidy/Cargo.toml index 19812fc6f55..cdf1dd36604 100644 --- a/src/tools/tidy/Cargo.toml +++ b/src/tools/tidy/Cargo.toml @@ -12,6 +12,7 @@ miropt-test-tools = { path = "../miropt-test-tools" } lazy_static = "1" walkdir = "2" ignore = "0.4.18" +semver = "1.0" termcolor = "1.1.3" [[bin]] diff --git a/src/tools/tidy/src/error_codes.rs b/src/tools/tidy/src/error_codes.rs index 5b84b51a035..6bb4d32f87d 100644 --- a/src/tools/tidy/src/error_codes.rs +++ b/src/tools/tidy/src/error_codes.rs @@ -31,7 +31,7 @@ const IGNORE_DOCTEST_CHECK: &[&str] = &["E0464", "E0570", "E0601", "E0602", "E06 // Error codes that don't yet have a UI test. This list will eventually be removed. const IGNORE_UI_TEST_CHECK: &[&str] = - &["E0461", "E0465", "E0476", "E0514", "E0523", "E0554", "E0640", "E0717", "E0729", "E0789"]; + &["E0461", "E0465", "E0476", "E0514", "E0523", "E0554", "E0640", "E0717", "E0729"]; macro_rules! verbose_print { ($verbose:expr, $($fmt:tt)*) => { diff --git a/src/tools/tidy/src/lib.rs b/src/tools/tidy/src/lib.rs index 97e56720b98..35000320d1a 100644 --- a/src/tools/tidy/src/lib.rs +++ b/src/tools/tidy/src/lib.rs @@ -70,3 +70,4 @@ pub mod ui_tests; pub mod unit_tests; pub mod unstable_book; pub mod walk; +pub mod x_version; diff --git a/src/tools/tidy/src/main.rs b/src/tools/tidy/src/main.rs index 0b9a1b37e94..505f9d724c8 100644 --- a/src/tools/tidy/src/main.rs +++ b/src/tools/tidy/src/main.rs @@ -60,7 +60,7 @@ fn main() { let handle = s.spawn(|| { let mut flag = false; - $p::check($($args),* , &mut flag); + $p::check($($args, )* &mut flag); if (flag) { bad.store(true, Ordering::Relaxed); } @@ -114,6 +114,8 @@ fn main() { check!(alphabetical, &compiler_path); check!(alphabetical, &library_path); + check!(x_version, &root_path, &cargo); + let collected = { drain_handles(&mut handles); diff --git a/src/tools/tidy/src/x_version.rs b/src/tools/tidy/src/x_version.rs new file mode 100644 index 00000000000..c470d502a65 --- /dev/null +++ b/src/tools/tidy/src/x_version.rs @@ -0,0 +1,68 @@ +use semver::Version; +use std::path::Path; +use std::process::{Command, Stdio}; + +pub fn check(root: &Path, cargo: &Path, bad: &mut bool) { + let cargo_list = Command::new(cargo).args(["install", "--list"]).stdout(Stdio::piped()).spawn(); + + let child = match cargo_list { + Ok(child) => child, + Err(e) => return tidy_error!(bad, "failed to run `cargo`: {}", e), + }; + + let cargo_list = child.wait_with_output().unwrap(); + + if cargo_list.status.success() { + let exe_list = String::from_utf8_lossy(&cargo_list.stdout); + let exe_list = exe_list.lines(); + + let mut installed: Option<Version> = None; + + for line in exe_list { + let mut iter = line.split_whitespace(); + if iter.next() == Some("x") { + if let Some(version) = iter.next() { + // Check this is the rust-lang/rust x tool installation since it should be + // installed at a path containing `src/tools/x`. + if let Some(path) = iter.next() { + if path.contains(&"src/tools/x") { + let version = version.strip_prefix("v").unwrap(); + installed = Some(Version::parse(version).unwrap()); + break; + } + }; + } + } else { + continue; + } + } + // Unwrap the some if x is installed, otherwise return because it's fine if x isn't installed. + let installed = if let Some(i) = installed { i } else { return }; + + if let Some(expected) = get_x_wrapper_version(root, cargo) { + if installed < expected { + return println!( + "Current version of x is {installed}, but the latest version is {expected}\nConsider updating to the newer version of x by running `cargo install --path src/tools/x`" + ); + } + } else { + return tidy_error!( + bad, + "Unable to parse the latest version of `x` at `src/tools/x/Cargo.toml`" + ); + } + } else { + return tidy_error!(bad, "failed to check version of `x`: {}", cargo_list.status); + } +} + +// Parse latest version out of `x` Cargo.toml +fn get_x_wrapper_version(root: &Path, cargo: &Path) -> Option<Version> { + let mut cmd = cargo_metadata::MetadataCommand::new(); + cmd.cargo_path(cargo) + .manifest_path(root.join("src/tools/x/Cargo.toml")) + .no_deps() + .features(cargo_metadata::CargoOpt::AllFeatures); + let mut metadata = t!(cmd.exec()); + metadata.packages.pop().map(|x| x.version) +} diff --git a/src/version b/src/version index ee2f4ca9130..49349856550 100644 --- a/src/version +++ b/src/version @@ -1 +1 @@ -1.68.0 +1.69.0 diff --git a/tests/mir-opt/76803_regression.encode.SimplifyBranchSame.diff b/tests/mir-opt/76803_regression.encode.SimplifyBranchSame.diff deleted file mode 100644 index 9780332d8bf..00000000000 --- a/tests/mir-opt/76803_regression.encode.SimplifyBranchSame.diff +++ /dev/null @@ -1,29 +0,0 @@ -- // MIR for `encode` before SimplifyBranchSame -+ // MIR for `encode` after SimplifyBranchSame - - fn encode(_1: Type) -> Type { - debug v => _1; // in scope 0 at $DIR/76803_regression.rs:+0:15: +0:16 - let mut _0: Type; // return place in scope 0 at $DIR/76803_regression.rs:+0:27: +0:31 - let mut _2: isize; // in scope 0 at $DIR/76803_regression.rs:+2:9: +2:16 - - bb0: { - _2 = discriminant(_1); // scope 0 at $DIR/76803_regression.rs:+1:11: +1:12 - switchInt(move _2) -> [0: bb2, otherwise: bb1]; // scope 0 at $DIR/76803_regression.rs:+1:5: +1:12 - } - - bb1: { - _0 = move _1; // scope 0 at $DIR/76803_regression.rs:+3:14: +3:15 - goto -> bb3; // scope 0 at $DIR/76803_regression.rs:+3:14: +3:15 - } - - bb2: { - Deinit(_0); // scope 0 at $DIR/76803_regression.rs:+2:20: +2:27 - discriminant(_0) = 1; // scope 0 at $DIR/76803_regression.rs:+2:20: +2:27 - goto -> bb3; // scope 0 at $DIR/76803_regression.rs:+2:20: +2:27 - } - - bb3: { - return; // scope 0 at $DIR/76803_regression.rs:+5:2: +5:2 - } - } - diff --git a/tests/mir-opt/76803_regression.rs b/tests/mir-opt/76803_regression.rs deleted file mode 100644 index 05dc3c97841..00000000000 --- a/tests/mir-opt/76803_regression.rs +++ /dev/null @@ -1,19 +0,0 @@ -// compile-flags: -Z mir-opt-level=1 -// EMIT_MIR 76803_regression.encode.SimplifyBranchSame.diff - -#[derive(Debug, Eq, PartialEq)] -pub enum Type { - A, - B, -} - -pub fn encode(v: Type) -> Type { - match v { - Type::A => Type::B, - _ => v, - } -} - -fn main() { - assert_eq!(Type::B, encode(Type::A)); -} diff --git a/tests/mir-opt/building/custom/simple_assign.rs b/tests/mir-opt/building/custom/simple_assign.rs index ec6dbe1d052..db041aab239 100644 --- a/tests/mir-opt/building/custom/simple_assign.rs +++ b/tests/mir-opt/building/custom/simple_assign.rs @@ -11,12 +11,14 @@ pub fn simple(x: i32) -> i32 { let temp2: _; { + StorageLive(temp1); temp1 = x; Goto(exit) } exit = { temp2 = Move(temp1); + StorageDead(temp1); RET = temp2; Return() } diff --git a/tests/mir-opt/building/custom/simple_assign.simple.built.after.mir b/tests/mir-opt/building/custom/simple_assign.simple.built.after.mir index d7560fde69c..743016708c5 100644 --- a/tests/mir-opt/building/custom/simple_assign.simple.built.after.mir +++ b/tests/mir-opt/building/custom/simple_assign.simple.built.after.mir @@ -6,13 +6,15 @@ fn simple(_1: i32) -> i32 { let mut _3: i32; // in scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL bb0: { - _2 = _1; // scope 0 at $DIR/simple_assign.rs:+6:13: +6:22 - goto -> bb1; // scope 0 at $DIR/simple_assign.rs:+7:13: +7:23 + StorageLive(_2); // scope 0 at $DIR/simple_assign.rs:+6:13: +6:31 + _2 = _1; // scope 0 at $DIR/simple_assign.rs:+7:13: +7:22 + goto -> bb1; // scope 0 at $DIR/simple_assign.rs:+8:13: +8:23 } bb1: { - _3 = move _2; // scope 0 at $DIR/simple_assign.rs:+11:13: +11:32 - _0 = _3; // scope 0 at $DIR/simple_assign.rs:+12:13: +12:24 - return; // scope 0 at $DIR/simple_assign.rs:+13:13: +13:21 + _3 = move _2; // scope 0 at $DIR/simple_assign.rs:+12:13: +12:32 + StorageDead(_2); // scope 0 at $DIR/simple_assign.rs:+13:13: +13:31 + _0 = _3; // scope 0 at $DIR/simple_assign.rs:+14:13: +14:24 + return; // scope 0 at $DIR/simple_assign.rs:+15:13: +15:21 } } diff --git a/tests/mir-opt/issue_73223.main.SimplifyArmIdentity.diff b/tests/mir-opt/issue_73223.main.SimplifyArmIdentity.diff deleted file mode 100644 index bf3bcfdb594..00000000000 --- a/tests/mir-opt/issue_73223.main.SimplifyArmIdentity.diff +++ /dev/null @@ -1,156 +0,0 @@ -- // MIR for `main` before SimplifyArmIdentity -+ // MIR for `main` after SimplifyArmIdentity - - fn main() -> () { - let mut _0: (); // return place in scope 0 at $DIR/issue_73223.rs:+0:11: +0:11 - let _1: i32; // in scope 0 at $DIR/issue_73223.rs:+1:9: +1:14 - let mut _2: std::option::Option<i32>; // in scope 0 at $DIR/issue_73223.rs:+1:23: +1:30 - let mut _3: isize; // in scope 0 at $DIR/issue_73223.rs:+2:9: +2:16 - let _4: i32; // in scope 0 at $DIR/issue_73223.rs:+2:14: +2:15 - let mut _6: i32; // in scope 0 at $DIR/issue_73223.rs:+6:22: +6:27 - let mut _7: &i32; // in scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - let mut _8: &i32; // in scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - let mut _11: bool; // in scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - let mut _12: bool; // in scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - let mut _13: i32; // in scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - let mut _14: i32; // in scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - let _16: !; // in scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - let mut _17: core::panicking::AssertKind; // in scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - let mut _18: &i32; // in scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - let _19: &i32; // in scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - let mut _20: &i32; // in scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - let _21: &i32; // in scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - let mut _22: std::option::Option<std::fmt::Arguments<'_>>; // in scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - let mut _24: &i32; // in scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - let mut _25: &i32; // in scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - scope 1 { - debug split => _1; // in scope 1 at $DIR/issue_73223.rs:+1:9: +1:14 - let _5: std::option::Option<i32>; // in scope 1 at $DIR/issue_73223.rs:+6:9: +6:14 - scope 3 { - debug _prev => _5; // in scope 3 at $DIR/issue_73223.rs:+6:9: +6:14 - let _9: &i32; // in scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - let _10: &i32; // in scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - let mut _23: &i32; // in scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - scope 4 { - debug left_val => _9; // in scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - debug right_val => _10; // in scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - let _15: core::panicking::AssertKind; // in scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - scope 5 { - debug kind => _15; // in scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - } - } - } - } - scope 2 { - debug v => _4; // in scope 2 at $DIR/issue_73223.rs:+2:14: +2:15 - } - - bb0: { - StorageLive(_1); // scope 0 at $DIR/issue_73223.rs:+1:9: +1:14 - StorageLive(_2); // scope 0 at $DIR/issue_73223.rs:+1:23: +1:30 - Deinit(_2); // scope 0 at $DIR/issue_73223.rs:+1:23: +1:30 - ((_2 as Some).0: i32) = const 1_i32; // scope 0 at $DIR/issue_73223.rs:+1:23: +1:30 - discriminant(_2) = 1; // scope 0 at $DIR/issue_73223.rs:+1:23: +1:30 - _3 = const 1_isize; // scope 0 at $DIR/issue_73223.rs:+1:23: +1:30 - goto -> bb3; // scope 0 at $DIR/issue_73223.rs:+1:17: +1:30 - } - - bb1: { - StorageDead(_2); // scope 0 at $DIR/issue_73223.rs:+4:6: +4:7 - StorageDead(_1); // scope 0 at $DIR/issue_73223.rs:+8:1: +8:2 - return; // scope 0 at $DIR/issue_73223.rs:+8:2: +8:2 - } - - bb2: { - unreachable; // scope 0 at $DIR/issue_73223.rs:+1:23: +1:30 - } - - bb3: { - StorageLive(_4); // scope 0 at $DIR/issue_73223.rs:+2:14: +2:15 - _4 = ((_2 as Some).0: i32); // scope 0 at $DIR/issue_73223.rs:+2:14: +2:15 - _1 = _4; // scope 2 at $DIR/issue_73223.rs:+2:20: +2:21 - StorageDead(_4); // scope 0 at $DIR/issue_73223.rs:+2:20: +2:21 - StorageDead(_2); // scope 0 at $DIR/issue_73223.rs:+4:6: +4:7 - StorageLive(_5); // scope 1 at $DIR/issue_73223.rs:+6:9: +6:14 - StorageLive(_6); // scope 1 at $DIR/issue_73223.rs:+6:22: +6:27 - _6 = _1; // scope 1 at $DIR/issue_73223.rs:+6:22: +6:27 - Deinit(_5); // scope 1 at $DIR/issue_73223.rs:+6:17: +6:28 - ((_5 as Some).0: i32) = move _6; // scope 1 at $DIR/issue_73223.rs:+6:17: +6:28 - discriminant(_5) = 1; // scope 1 at $DIR/issue_73223.rs:+6:17: +6:28 - StorageDead(_6); // scope 1 at $DIR/issue_73223.rs:+6:27: +6:28 - StorageLive(_24); // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - StorageLive(_25); // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - StorageLive(_7); // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - _7 = &_1; // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - StorageLive(_8); // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - _23 = const _; // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - // mir::Constant - // + span: $SRC_DIR/core/src/macros/mod.rs:LL:COL - // + literal: Const { ty: &i32, val: Unevaluated(main, [], Some(promoted[0])) } - _8 = _23; // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - Deinit(_24); // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - Deinit(_25); // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - _24 = move _7; // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - _25 = move _8; // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - StorageDead(_8); // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - StorageDead(_7); // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - StorageLive(_9); // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - _9 = _24; // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - StorageLive(_10); // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - _10 = _25; // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - StorageLive(_11); // scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - StorageLive(_12); // scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - StorageLive(_13); // scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - _13 = (*_9); // scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - StorageLive(_14); // scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - _14 = const 1_i32; // scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - _12 = Eq(move _13, const 1_i32); // scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - StorageDead(_14); // scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - StorageDead(_13); // scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - _11 = Not(move _12); // scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - StorageDead(_12); // scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - switchInt(move _11) -> [0: bb5, otherwise: bb4]; // scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - } - - bb4: { - StorageLive(_15); // scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - Deinit(_15); // scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - discriminant(_15) = 0; // scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - StorageLive(_16); // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - StorageLive(_17); // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - _17 = const core::panicking::AssertKind::Eq; // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - // mir::Constant - // + span: $SRC_DIR/core/src/macros/mod.rs:LL:COL - // + literal: Const { ty: core::panicking::AssertKind, val: Value(Scalar(0x00)) } - StorageLive(_18); // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - StorageLive(_19); // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - _19 = _9; // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - _18 = _19; // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - StorageLive(_20); // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - StorageLive(_21); // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - _21 = _10; // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - _20 = _21; // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - StorageLive(_22); // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - Deinit(_22); // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - discriminant(_22) = 0; // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - _16 = core::panicking::assert_failed::<i32, i32>(const core::panicking::AssertKind::Eq, move _18, move _20, move _22); // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - // mir::Constant - // + span: $SRC_DIR/core/src/macros/mod.rs:LL:COL - // + literal: Const { ty: for<'a, 'b, 'c> fn(core::panicking::AssertKind, &'a i32, &'b i32, Option<Arguments<'c>>) -> ! {core::panicking::assert_failed::<i32, i32>}, val: Value(<ZST>) } - // mir::Constant - // + span: $SRC_DIR/core/src/macros/mod.rs:LL:COL - // + literal: Const { ty: core::panicking::AssertKind, val: Value(Scalar(0x00)) } - } - - bb5: { - StorageDead(_11); // scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - StorageDead(_10); // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - StorageDead(_9); // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - StorageDead(_24); // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - StorageDead(_25); // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL - StorageDead(_5); // scope 1 at $DIR/issue_73223.rs:+8:1: +8:2 - StorageDead(_1); // scope 0 at $DIR/issue_73223.rs:+8:1: +8:2 - return; // scope 0 at $DIR/issue_73223.rs:+8:2: +8:2 - } - } - diff --git a/tests/mir-opt/issue_73223.rs b/tests/mir-opt/issue_73223.rs deleted file mode 100644 index be114cab719..00000000000 --- a/tests/mir-opt/issue_73223.rs +++ /dev/null @@ -1,12 +0,0 @@ -fn main() { - let split = match Some(1) { - Some(v) => v, - None => return, - }; - - let _prev = Some(split); - assert_eq!(split, 1); -} - - -// EMIT_MIR issue_73223.main.SimplifyArmIdentity.diff diff --git a/tests/rustdoc-gui/mobile.goml b/tests/rustdoc-gui/mobile.goml index 895864d8944..3e444cbd6dc 100644 --- a/tests/rustdoc-gui/mobile.goml +++ b/tests/rustdoc-gui/mobile.goml @@ -28,7 +28,7 @@ goto: "file://" + |DOC_PATH| + "/settings.html" size: (400, 600) // Ignored for now https://github.com/rust-lang/rust/issues/93784. // compare-elements-position-near-false: ( -// "#preferred-light-theme .setting-name", -// "#preferred-light-theme .choice", +// "#preferred-light-theme .setting-radio-name", +// "#preferred-light-theme .setting-radio", // {"y": 16}, // ) diff --git a/tests/rustdoc-gui/scrape-examples-color.goml b/tests/rustdoc-gui/scrape-examples-color.goml index 40f31b2771b..67c58826efc 100644 --- a/tests/rustdoc-gui/scrape-examples-color.goml +++ b/tests/rustdoc-gui/scrape-examples-color.goml @@ -58,3 +58,39 @@ call-function: ("check-colors", { "help_hover_border": "rgb(0, 0, 0)", "help_hover_color": "rgb(0, 0, 0)", }) + +// Now testing the top and bottom background in case there is only one scraped examples. +goto: "file://" + |DOC_PATH| + "/scrape_examples/fn.test.html" + +define-function: ( + "check-background", + (theme, background_color_start, background_color_end), + block { + local-storage: { "rustdoc-theme": |theme|, "rustdoc-use-system-theme": "false", } + reload: + assert-css: (".scraped-example:not(.expanded) .code-wrapper::before", { + "background-image": "linear-gradient(" + |background_color_start| + ", " + + |background_color_end| + ")", + }) + assert-css: (".scraped-example:not(.expanded) .code-wrapper::after", { + "background-image": "linear-gradient(to top, " + |background_color_start| + ", " + + |background_color_end| + ")", + }) + }, +) + +call-function: ("check-background", { + "theme": "ayu", + "background_color_start": "rgb(15, 20, 25)", + "background_color_end": "rgba(15, 20, 25, 0)", +}) +call-function: ("check-background", { + "theme": "dark", + "background_color_start": "rgb(53, 53, 53)", + "background_color_end": "rgba(53, 53, 53, 0)", +}) +call-function: ("check-background", { + "theme": "light", + "background_color_start": "rgb(255, 255, 255)", + "background_color_end": "rgba(255, 255, 255, 0)", +}) diff --git a/tests/rustdoc-gui/settings.goml b/tests/rustdoc-gui/settings.goml index 419cc5ebac3..a8417288578 100644 --- a/tests/rustdoc-gui/settings.goml +++ b/tests/rustdoc-gui/settings.goml @@ -43,12 +43,12 @@ wait-for: "#settings" // We check that the "Use system theme" is disabled. assert-property: ("#theme-system-preference", {"checked": "false"}) // Meaning that only the "theme" menu is showing up. -assert: ".setting-line:not(.hidden) #theme" -assert: ".setting-line.hidden #preferred-dark-theme" -assert: ".setting-line.hidden #preferred-light-theme" +assert: "#theme.setting-line:not(.hidden)" +assert: "#preferred-dark-theme.setting-line.hidden" +assert: "#preferred-light-theme.setting-line.hidden" // We check that the correct theme is selected. -assert-property: ("#theme .choices #theme-dark", {"checked": "true"}) +assert-property: ("#theme .setting-radio-choices #theme-dark", {"checked": "true"}) // Some style checks... move-cursor-to: "#settings-menu > a" @@ -109,31 +109,31 @@ assert-css: ( "box-shadow": "rgb(33, 150, 243) 0px 0px 1px 1px", }, ) -// Now we check the setting-name for radio buttons is on a different line than the label. +// Now we check the setting-radio-name is on a different line than the label. compare-elements-position-near: ( - "#theme .setting-name", - "#theme .choices", + "#theme .setting-radio-name", + "#theme .setting-radio-choices", {"x": 1} ) compare-elements-position-near-false: ( - "#theme .setting-name", - "#theme .choices", + "#theme .setting-radio-name", + "#theme .setting-radio-choices", {"y": 1} ) // Now we check that the label positions are all on the same line. compare-elements-position-near: ( - "#theme .choices #theme-light", - "#theme .choices #theme-dark", + "#theme .setting-radio-choices #theme-light", + "#theme .setting-radio-choices #theme-dark", {"y": 1} ) compare-elements-position-near: ( - "#theme .choices #theme-dark", - "#theme .choices #theme-ayu", + "#theme .setting-radio-choices #theme-dark", + "#theme .setting-radio-choices #theme-ayu", {"y": 1} ) compare-elements-position-near: ( - "#theme .choices #theme-ayu", - "#theme .choices #theme-system-preference", + "#theme .setting-radio-choices #theme-ayu", + "#theme .setting-radio-choices #theme-system-preference", {"y": 1} ) @@ -180,17 +180,17 @@ assert-css: ( // We now switch the display. click: "#theme-system-preference" // Wait for the hidden element to show up. -wait-for: ".setting-line:not(.hidden) #preferred-dark-theme" -assert: ".setting-line:not(.hidden) #preferred-light-theme" +wait-for: "#preferred-dark-theme.setting-line:not(.hidden)" +assert: "#preferred-light-theme.setting-line:not(.hidden)" // We check their text as well. -assert-text: ("#preferred-dark-theme .setting-name", "Preferred dark theme") -assert-text: ("#preferred-light-theme .setting-name", "Preferred light theme") +assert-text: ("#preferred-dark-theme .setting-radio-name", "Preferred dark theme") +assert-text: ("#preferred-light-theme .setting-radio-name", "Preferred light theme") // We now check that clicking on the toggles' text is like clicking on the checkbox. // To test it, we use the "Disable keyboard shortcuts". local-storage: {"rustdoc-disable-shortcuts": "false"} -click: ".setting-line:last-child .settings-toggle .label" +click: ".setting-line:last-child .setting-check span" assert-local-storage: {"rustdoc-disable-shortcuts": "true"} // Make sure that "Disable keyboard shortcuts" actually took effect. @@ -200,7 +200,7 @@ assert-false: "#help-button .popover" wait-for-css: ("#settings-menu .popover", {"display": "block"}) // Now turn keyboard shortcuts back on, and see if they work. -click: ".setting-line:last-child .settings-toggle .label" +click: ".setting-line:last-child .setting-check span" assert-local-storage: {"rustdoc-disable-shortcuts": "false"} press-key: "Escape" press-key: "?" diff --git a/tests/rustdoc-gui/theme-change.goml b/tests/rustdoc-gui/theme-change.goml index cc47f1f450c..31c9d99aa83 100644 --- a/tests/rustdoc-gui/theme-change.goml +++ b/tests/rustdoc-gui/theme-change.goml @@ -43,7 +43,7 @@ assert-local-storage: { "rustdoc-theme": "ayu" } assert-local-storage-false: { "rustdoc-use-system-theme": "true" } click: "#theme-system-preference" -wait-for: ".setting-line:not(.hidden) #preferred-light-theme" +wait-for: "#preferred-light-theme.setting-line:not(.hidden)" assert-local-storage: { "rustdoc-use-system-theme": "true" } // We click on both preferred light and dark themes to be sure that there is a change. click: "#preferred-light-theme-dark" @@ -52,16 +52,16 @@ wait-for-css: ("body", { "background-color": |background_dark| }) reload: // Ensure that the "preferred themes" are still displayed. -wait-for: ".setting-line:not(.hidden) #preferred-light-theme" +wait-for: "#preferred-light-theme.setting-line:not(.hidden)" click: "#theme-light" wait-for-css: ("body", { "background-color": |background_light| }) assert-local-storage: { "rustdoc-theme": "light" } // Ensure it's now hidden again -wait-for: ".setting-line.hidden #preferred-light-theme" +wait-for: "#preferred-light-theme.setting-line.hidden" // And ensure the theme was rightly set. wait-for-css: ("body", { "background-color": |background_light| }) assert-local-storage: { "rustdoc-theme": "light" } reload: wait-for: "#settings" -assert: ".setting-line.hidden #preferred-light-theme" +assert: "#preferred-light-theme.setting-line.hidden" diff --git a/tests/rustdoc-ui/infinite-recursive-type-impl-trait-return.rs b/tests/rustdoc-ui/infinite-recursive-type-impl-trait-return.rs index 939da186fbc..4b1e04234c8 100644 --- a/tests/rustdoc-ui/infinite-recursive-type-impl-trait-return.rs +++ b/tests/rustdoc-ui/infinite-recursive-type-impl-trait-return.rs @@ -1,10 +1,12 @@ +// check-pass // normalize-stderr-test: "`.*`" -> "`DEF_ID`" // normalize-stdout-test: "`.*`" -> "`DEF_ID`" // edition:2018 pub async fn f() -> impl std::fmt::Debug { + // rustdoc doesn't care that this is infinitely sized #[derive(Debug)] - enum E { //~ ERROR + enum E { This(E), Unit, } diff --git a/tests/rustdoc-ui/infinite-recursive-type-impl-trait-return.stderr b/tests/rustdoc-ui/infinite-recursive-type-impl-trait-return.stderr deleted file mode 100644 index aff7402bc91..00000000000 --- a/tests/rustdoc-ui/infinite-recursive-type-impl-trait-return.stderr +++ /dev/null @@ -1,16 +0,0 @@ -error[E0072]: recursive type `DEF_ID` has infinite size - --> $DIR/infinite-recursive-type-impl-trait-return.rs:7:5 - | -LL | enum E { - | ^^^^^^ -LL | This(E), - | - recursive without indirection - | -help: insert some indirection (e.g., a `DEF_ID`) to break the cycle - | -LL | This(Box<E>), - | ++++ + - -error: aborting due to previous error - -For more information about this error, try `DEF_ID`. diff --git a/tests/rustdoc-ui/infinite-recursive-type-impl-trait.rs b/tests/rustdoc-ui/infinite-recursive-type-impl-trait.rs index ac517257498..ac79582fb3f 100644 --- a/tests/rustdoc-ui/infinite-recursive-type-impl-trait.rs +++ b/tests/rustdoc-ui/infinite-recursive-type-impl-trait.rs @@ -1,5 +1,8 @@ +// check-pass + fn f() -> impl Sized { - enum E { //~ ERROR + // rustdoc doesn't care that this is infinitely sized + enum E { V(E), } unimplemented!() diff --git a/tests/rustdoc-ui/infinite-recursive-type-impl-trait.stderr b/tests/rustdoc-ui/infinite-recursive-type-impl-trait.stderr deleted file mode 100644 index a61577bd14a..00000000000 --- a/tests/rustdoc-ui/infinite-recursive-type-impl-trait.stderr +++ /dev/null @@ -1,16 +0,0 @@ -error[E0072]: recursive type `f::E` has infinite size - --> $DIR/infinite-recursive-type-impl-trait.rs:2:5 - | -LL | enum E { - | ^^^^^^ -LL | V(E), - | - recursive without indirection - | -help: insert some indirection (e.g., a `Box`, `Rc`, or `&`) to break the cycle - | -LL | V(Box<E>), - | ++++ + - -error: aborting due to previous error - -For more information about this error, try `rustc --explain E0072`. diff --git a/tests/rustdoc/impl-in-const-block.rs b/tests/rustdoc/impl-in-const-block.rs deleted file mode 100644 index b44e7135246..00000000000 --- a/tests/rustdoc/impl-in-const-block.rs +++ /dev/null @@ -1,43 +0,0 @@ -// Regression test for #83026. -// The goal of this test is to ensure that impl blocks inside -// const expressions are documented as well. - -#![crate_name = "foo"] - -// @has 'foo/struct.A.html' -// @has - '//*[@id="method.new"]/*[@class="code-header"]' 'pub fn new() -> A' -// @has - '//*[@id="method.bar"]/*[@class="code-header"]' 'pub fn bar(&self)' -// @has - '//*[@id="method.woo"]/*[@class="code-header"]' 'pub fn woo(&self)' -// @has - '//*[@id="method.yoo"]/*[@class="code-header"]' 'pub fn yoo()' -// @has - '//*[@id="method.yuu"]/*[@class="code-header"]' 'pub fn yuu()' -pub struct A; - -const _: () = { - impl A { - const FOO: () = { - impl A { - pub fn woo(&self) {} - } - }; - - pub fn new() -> A { - A - } - } -}; -pub const X: () = { - impl A { - pub fn bar(&self) {} - } -}; - -fn foo() { - impl A { - pub fn yoo() {} - } - const _: () = { - impl A { - pub fn yuu() {} - } - }; -} diff --git a/tests/rustdoc/whitespace-after-where-clause.enum.html b/tests/rustdoc/whitespace-after-where-clause.enum.html index 20bde549a03..eeb22878f3c 100644 --- a/tests/rustdoc/whitespace-after-where-clause.enum.html +++ b/tests/rustdoc/whitespace-after-where-clause.enum.html @@ -1,4 +1,4 @@ <div class="item-decl"><pre class="rust"><code>pub enum Cow<'a, B><span class="where fmt-newline">where<br />    B: <a class="trait" href="trait.ToOwned.html" title="trait foo::ToOwned">ToOwned</a><dyn <a class="trait" href="{{channel}}/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>> + ?<a class="trait" href="{{channel}}/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + 'a,</span>{ - Borrowed(<a class="primitive" href="{{channel}}/std/primitive.reference.html">&'a </a>B), + Borrowed(<a class="primitive" href="{{channel}}/std/primitive.reference.html">&'a B</a>), Whatever(<a class="primitive" href="{{channel}}/std/primitive.u32.html">u32</a>), }</code></pre></div> \ No newline at end of file diff --git a/tests/rustdoc/whitespace-after-where-clause.enum2.html b/tests/rustdoc/whitespace-after-where-clause.enum2.html index d9fc0c22309..c8037c2a8df 100644 --- a/tests/rustdoc/whitespace-after-where-clause.enum2.html +++ b/tests/rustdoc/whitespace-after-where-clause.enum2.html @@ -1,4 +1,4 @@ <div class="item-decl"><pre class="rust"><code>pub enum Cow2<'a, B: ?<a class="trait" href="{{channel}}/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="trait.ToOwned.html" title="trait foo::ToOwned">ToOwned</a><dyn <a class="trait" href="{{channel}}/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>> + 'a> { - Borrowed(<a class="primitive" href="{{channel}}/std/primitive.reference.html">&'a </a>B), + Borrowed(<a class="primitive" href="{{channel}}/std/primitive.reference.html">&'a B</a>), Whatever(<a class="primitive" href="{{channel}}/std/primitive.u32.html">u32</a>), }</code></pre></div> \ No newline at end of file diff --git a/tests/rustdoc/whitespace-after-where-clause.struct.html b/tests/rustdoc/whitespace-after-where-clause.struct.html index f375265d7c1..5892270b2f9 100644 --- a/tests/rustdoc/whitespace-after-where-clause.struct.html +++ b/tests/rustdoc/whitespace-after-where-clause.struct.html @@ -1,4 +1,4 @@ <div class="item-decl"><pre class="rust"><code>pub struct Struct<'a, B><span class="where fmt-newline">where<br />    B: <a class="trait" href="trait.ToOwned.html" title="trait foo::ToOwned">ToOwned</a><dyn <a class="trait" href="{{channel}}/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>> + ?<a class="trait" href="{{channel}}/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + 'a,</span>{ - pub a: <a class="primitive" href="{{channel}}/std/primitive.reference.html">&'a </a>B, + pub a: <a class="primitive" href="{{channel}}/std/primitive.reference.html">&'a B</a>, pub b: <a class="primitive" href="{{channel}}/std/primitive.u32.html">u32</a>, }</code></pre></div> \ No newline at end of file diff --git a/tests/rustdoc/whitespace-after-where-clause.struct2.html b/tests/rustdoc/whitespace-after-where-clause.struct2.html index 1c59962eb1c..d3952b0c566 100644 --- a/tests/rustdoc/whitespace-after-where-clause.struct2.html +++ b/tests/rustdoc/whitespace-after-where-clause.struct2.html @@ -1,4 +1,4 @@ <div class="item-decl"><pre class="rust"><code>pub struct Struct2<'a, B: ?<a class="trait" href="{{channel}}/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="trait.ToOwned.html" title="trait foo::ToOwned">ToOwned</a><dyn <a class="trait" href="{{channel}}/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>> + 'a> { - pub a: <a class="primitive" href="{{channel}}/std/primitive.reference.html">&'a </a>B, + pub a: <a class="primitive" href="{{channel}}/std/primitive.reference.html">&'a B</a>, pub b: <a class="primitive" href="{{channel}}/std/primitive.u32.html">u32</a>, }</code></pre></div> \ No newline at end of file diff --git a/tests/ui-fulldeps/dropck-tarena-cycle-checked.stderr b/tests/ui-fulldeps/dropck-tarena-cycle-checked.stderr index 4299688221a..47897dc003a 100644 --- a/tests/ui-fulldeps/dropck-tarena-cycle-checked.stderr +++ b/tests/ui-fulldeps/dropck-tarena-cycle-checked.stderr @@ -1,6 +1,8 @@ error[E0597]: `arena` does not live long enough --> $DIR/dropck-tarena-cycle-checked.rs:116:7 | +LL | let arena = TypedArena::default(); + | ----- binding `arena` declared here LL | f(&arena); | ^^^^^^ borrowed value does not live long enough LL | } diff --git a/tests/ui-fulldeps/dropck-tarena-unsound-drop.stderr b/tests/ui-fulldeps/dropck-tarena-unsound-drop.stderr index ccffee9cdbd..493d74b0bde 100644 --- a/tests/ui-fulldeps/dropck-tarena-unsound-drop.stderr +++ b/tests/ui-fulldeps/dropck-tarena-unsound-drop.stderr @@ -1,6 +1,8 @@ error[E0597]: `arena` does not live long enough --> $DIR/dropck-tarena-unsound-drop.rs:41:7 | +LL | let arena: TypedArena<C> = TypedArena::default(); + | ----- binding `arena` declared here LL | f(&arena); | ^^^^^^ borrowed value does not live long enough LL | } diff --git a/tests/ui-fulldeps/mod_dir_path_canonicalized.rs b/tests/ui-fulldeps/mod_dir_path_canonicalized.rs index ff1be080415..bdfd9628c48 100644 --- a/tests/ui-fulldeps/mod_dir_path_canonicalized.rs +++ b/tests/ui-fulldeps/mod_dir_path_canonicalized.rs @@ -2,6 +2,7 @@ // Testing that a librustc_ast can parse modules with canonicalized base path // ignore-cross-compile // ignore-remote +// no-remap-src-base: Reading `file!()` (expectedly) fails when enabled. #![feature(rustc_private)] diff --git a/tests/ui/anonymous-higher-ranked-lifetime.stderr b/tests/ui/anonymous-higher-ranked-lifetime.stderr index afb7f8fea92..c023d1b1590 100644 --- a/tests/ui/anonymous-higher-ranked-lifetime.stderr +++ b/tests/ui/anonymous-higher-ranked-lifetime.stderr @@ -16,7 +16,7 @@ LL | fn f1<F>(_: F) where F: Fn(&(), &()) {} help: consider borrowing the argument | LL | f1(|_: &(), _: &()| {}); - | ~~~ ~~~ + | + + error[E0631]: type mismatch in closure arguments --> $DIR/anonymous-higher-ranked-lifetime.rs:3:5 @@ -35,8 +35,8 @@ LL | fn f2<F>(_: F) where F: for<'a> Fn(&'a (), &()) {} | ^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `f2` help: consider borrowing the argument | -LL | f2(|_: &'a (), _: &()| {}); - | ~~~~~~ ~~~ +LL | f2(|_: &(), _: &()| {}); + | + + error[E0631]: type mismatch in closure arguments --> $DIR/anonymous-higher-ranked-lifetime.rs:4:5 @@ -56,7 +56,7 @@ LL | fn f3<'a, F>(_: F) where F: Fn(&'a (), &()) {} help: consider borrowing the argument | LL | f3(|_: &(), _: &()| {}); - | ~~~ ~~~ + | + + error[E0631]: type mismatch in closure arguments --> $DIR/anonymous-higher-ranked-lifetime.rs:5:5 @@ -75,8 +75,8 @@ LL | fn f4<F>(_: F) where F: for<'r> Fn(&(), &'r ()) {} | ^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `f4` help: consider borrowing the argument | -LL | f4(|_: &(), _: &'r ()| {}); - | ~~~ ~~~~~~ +LL | f4(|_: &(), _: &()| {}); + | + + error[E0631]: type mismatch in closure arguments --> $DIR/anonymous-higher-ranked-lifetime.rs:6:5 @@ -95,17 +95,15 @@ LL | fn f5<F>(_: F) where F: for<'r> Fn(&'r (), &'r ()) {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `f5` help: consider borrowing the argument | -LL | f5(|_: &'r (), _: &'r ()| {}); - | ~~~~~~ ~~~~~~ +LL | f5(|_: &(), _: &()| {}); + | + + error[E0631]: type mismatch in closure arguments --> $DIR/anonymous-higher-ranked-lifetime.rs:7:5 | LL | g1(|_: (), _: ()| {}); - | ^^ -------------- - | | | | - | | | help: consider borrowing the argument: `&()` - | | found signature defined here + | ^^ -------------- found signature defined here + | | | expected due to this | = note: expected closure signature `for<'a> fn(&'a (), Box<(dyn for<'a> Fn(&'a ()) + 'static)>) -> _` @@ -115,15 +113,17 @@ note: required by a bound in `g1` | LL | fn g1<F>(_: F) where F: Fn(&(), Box<dyn Fn(&())>) {} | ^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `g1` +help: consider borrowing the argument + | +LL | g1(|_: &(), _: ()| {}); + | + error[E0631]: type mismatch in closure arguments --> $DIR/anonymous-higher-ranked-lifetime.rs:8:5 | LL | g2(|_: (), _: ()| {}); - | ^^ -------------- - | | | | - | | | help: consider borrowing the argument: `&()` - | | found signature defined here + | ^^ -------------- found signature defined here + | | | expected due to this | = note: expected closure signature `for<'a> fn(&'a (), for<'a> fn(&'a ())) -> _` @@ -133,15 +133,17 @@ note: required by a bound in `g2` | LL | fn g2<F>(_: F) where F: Fn(&(), fn(&())) {} | ^^^^^^^^^^^^^^^^ required by this bound in `g2` +help: consider borrowing the argument + | +LL | g2(|_: &(), _: ()| {}); + | + error[E0631]: type mismatch in closure arguments --> $DIR/anonymous-higher-ranked-lifetime.rs:9:5 | LL | g3(|_: (), _: ()| {}); - | ^^ -------------- - | | | | - | | | help: consider borrowing the argument: `&'s ()` - | | found signature defined here + | ^^ -------------- found signature defined here + | | | expected due to this | = note: expected closure signature `for<'s> fn(&'s (), Box<(dyn for<'a> Fn(&'a ()) + 'static)>) -> _` @@ -151,15 +153,17 @@ note: required by a bound in `g3` | LL | fn g3<F>(_: F) where F: for<'s> Fn(&'s (), Box<dyn Fn(&())>) {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `g3` +help: consider borrowing the argument + | +LL | g3(|_: &(), _: ()| {}); + | + error[E0631]: type mismatch in closure arguments --> $DIR/anonymous-higher-ranked-lifetime.rs:10:5 | LL | g4(|_: (), _: ()| {}); - | ^^ -------------- - | | | | - | | | help: consider borrowing the argument: `&()` - | | found signature defined here + | ^^ -------------- found signature defined here + | | | expected due to this | = note: expected closure signature `for<'a> fn(&'a (), for<'r> fn(&'r ())) -> _` @@ -169,6 +173,10 @@ note: required by a bound in `g4` | LL | fn g4<F>(_: F) where F: Fn(&(), for<'r> fn(&'r ())) {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `g4` +help: consider borrowing the argument + | +LL | g4(|_: &(), _: ()| {}); + | + error[E0631]: type mismatch in closure arguments --> $DIR/anonymous-higher-ranked-lifetime.rs:11:5 @@ -188,7 +196,7 @@ LL | fn h1<F>(_: F) where F: Fn(&(), Box<dyn Fn(&())>, &(), fn(&(), &())) {} help: consider borrowing the argument | LL | h1(|_: &(), _: (), _: &(), _: ()| {}); - | ~~~ ~~~ + | + + error[E0631]: type mismatch in closure arguments --> $DIR/anonymous-higher-ranked-lifetime.rs:12:5 @@ -207,8 +215,8 @@ LL | fn h2<F>(_: F) where F: for<'t0> Fn(&(), Box<dyn Fn(&())>, &'t0 (), fn(&(), | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `h2` help: consider borrowing the argument | -LL | h2(|_: &(), _: (), _: &'t0 (), _: ()| {}); - | ~~~ ~~~~~~~ +LL | h2(|_: &(), _: (), _: &(), _: ()| {}); + | + + error: aborting due to 11 previous errors diff --git a/tests/ui/asm/type-check-4.stderr b/tests/ui/asm/type-check-4.stderr index c97cd171b1e..b5ecb3e1b56 100644 --- a/tests/ui/asm/type-check-4.stderr +++ b/tests/ui/asm/type-check-4.stderr @@ -2,9 +2,9 @@ error[E0506]: cannot assign to `a` because it is borrowed --> $DIR/type-check-4.rs:14:9 | LL | let p = &a; - | -- borrow of `a` occurs here + | -- `a` is borrowed here LL | asm!("{}", out(reg) a); - | ^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `a` occurs here + | ^^^^^^^^^^^^^^^^^^^^^^ `a` is assigned to here but it was already borrowed LL | LL | println!("{}", p); | - borrow later used here @@ -13,7 +13,7 @@ error[E0503]: cannot use `a` because it was mutably borrowed --> $DIR/type-check-4.rs:22:28 | LL | let p = &mut a; - | ------ borrow of `a` occurs here + | ------ `a` is borrowed here LL | asm!("{}", in(reg) a); | ^ use of borrowed `a` LL | diff --git a/tests/ui/associated-types/associated-types-outlives.stderr b/tests/ui/associated-types/associated-types-outlives.stderr index 840e33b4b8a..2fe3f2d4a02 100644 --- a/tests/ui/associated-types/associated-types-outlives.stderr +++ b/tests/ui/associated-types/associated-types-outlives.stderr @@ -1,6 +1,9 @@ error[E0505]: cannot move out of `x` because it is borrowed --> $DIR/associated-types-outlives.rs:22:14 | +LL | F: for<'a> FnOnce(<T as Foo<'a>>::Bar)>(x: T, f: F) { + | - binding `x` declared here +... LL | 's: loop { y = denormalise(&x); break } | -- borrow of `x` occurs here LL | drop(x); diff --git a/tests/ui/async-await/await-sequence.rs b/tests/ui/async-await/await-sequence.rs new file mode 100644 index 00000000000..726c4284ec1 --- /dev/null +++ b/tests/ui/async-await/await-sequence.rs @@ -0,0 +1,21 @@ +// edition:2021 +// compile-flags: -Z drop-tracking +// build-pass + +use std::collections::HashMap; + +fn main() { + let _ = real_main(); +} + +async fn nop() {} + +async fn real_main() { + nop().await; + nop().await; + nop().await; + nop().await; + + let mut map: HashMap<(), ()> = HashMap::new(); + map.insert((), nop().await); +} diff --git a/tests/ui/async-await/issue-68112.drop_tracking.stderr b/tests/ui/async-await/issue-68112.drop_tracking.stderr index f2802698fd5..bd648de3067 100644 --- a/tests/ui/async-await/issue-68112.drop_tracking.stderr +++ b/tests/ui/async-await/issue-68112.drop_tracking.stderr @@ -5,6 +5,7 @@ LL | require_send(send_fut); | ^^^^^^^^ future created by async block is not `Send` | = help: the trait `Sync` is not implemented for `RefCell<i32>` + = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead note: future is not `Send` as it awaits another future which is not `Send` --> $DIR/issue-68112.rs:34:17 | @@ -23,6 +24,7 @@ LL | require_send(send_fut); | ^^^^^^^^ future created by async block is not `Send` | = help: the trait `Sync` is not implemented for `RefCell<i32>` + = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead note: future is not `Send` as it awaits another future which is not `Send` --> $DIR/issue-68112.rs:43:17 | @@ -43,6 +45,7 @@ LL | require_send(send_fut); | required by a bound introduced by this call | = help: the trait `Sync` is not implemented for `RefCell<i32>` + = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead = note: required for `Arc<RefCell<i32>>` to implement `Send` note: required because it's used within this `async fn` body --> $DIR/issue-68112.rs:50:31 diff --git a/tests/ui/async-await/issue-68112.no_drop_tracking.stderr b/tests/ui/async-await/issue-68112.no_drop_tracking.stderr index 38eb85b302f..35b7341f63a 100644 --- a/tests/ui/async-await/issue-68112.no_drop_tracking.stderr +++ b/tests/ui/async-await/issue-68112.no_drop_tracking.stderr @@ -5,6 +5,7 @@ LL | require_send(send_fut); | ^^^^^^^^ future created by async block is not `Send` | = help: the trait `Sync` is not implemented for `RefCell<i32>` + = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead note: future is not `Send` as it awaits another future which is not `Send` --> $DIR/issue-68112.rs:34:17 | @@ -23,6 +24,7 @@ LL | require_send(send_fut); | ^^^^^^^^ future created by async block is not `Send` | = help: the trait `Sync` is not implemented for `RefCell<i32>` + = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead note: future is not `Send` as it awaits another future which is not `Send` --> $DIR/issue-68112.rs:43:17 | @@ -43,6 +45,7 @@ LL | require_send(send_fut); | required by a bound introduced by this call | = help: the trait `Sync` is not implemented for `RefCell<i32>` + = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead = note: required for `Arc<RefCell<i32>>` to implement `Send` note: required because it's used within this `async fn` body --> $DIR/issue-68112.rs:50:31 diff --git a/tests/ui/async-await/issue-74072-lifetime-name-annotations.stderr b/tests/ui/async-await/issue-74072-lifetime-name-annotations.stderr index b96cab9f0f5..628ba1a4818 100644 --- a/tests/ui/async-await/issue-74072-lifetime-name-annotations.stderr +++ b/tests/ui/async-await/issue-74072-lifetime-name-annotations.stderr @@ -4,9 +4,9 @@ error[E0506]: cannot assign to `*x` because it is borrowed LL | pub async fn async_fn(x: &mut i32) -> &i32 { | - let's call the lifetime of this reference `'1` LL | let y = &*x; - | --- borrow of `*x` occurs here + | --- `*x` is borrowed here LL | *x += 1; - | ^^^^^^^ assignment to borrowed `*x` occurs here + | ^^^^^^^ `*x` is assigned to here but it was already borrowed LL | y | - returning this value requires that `*x` is borrowed for `'1` @@ -14,9 +14,9 @@ error[E0506]: cannot assign to `*x` because it is borrowed --> $DIR/issue-74072-lifetime-name-annotations.rs:16:9 | LL | let y = &*x; - | --- borrow of `*x` occurs here + | --- `*x` is borrowed here LL | *x += 1; - | ^^^^^^^ assignment to borrowed `*x` occurs here + | ^^^^^^^ `*x` is assigned to here but it was already borrowed LL | y | - returning this value requires that `*x` is borrowed for `'1` LL | })() @@ -28,9 +28,9 @@ error[E0506]: cannot assign to `*x` because it is borrowed LL | (async move || -> &i32 { | - let's call the lifetime of this reference `'1` LL | let y = &*x; - | --- borrow of `*x` occurs here + | --- `*x` is borrowed here LL | *x += 1; - | ^^^^^^^ assignment to borrowed `*x` occurs here + | ^^^^^^^ `*x` is assigned to here but it was already borrowed LL | y | - returning this value requires that `*x` is borrowed for `'1` @@ -38,9 +38,9 @@ error[E0506]: cannot assign to `*x` because it is borrowed --> $DIR/issue-74072-lifetime-name-annotations.rs:32:9 | LL | let y = &*x; - | --- borrow of `*x` occurs here + | --- `*x` is borrowed here LL | *x += 1; - | ^^^^^^^ assignment to borrowed `*x` occurs here + | ^^^^^^^ `*x` is assigned to here but it was already borrowed LL | y | - returning this value requires that `*x` is borrowed for `'1` LL | } diff --git a/tests/ui/async-await/issue-75785-confusing-named-region.stderr b/tests/ui/async-await/issue-75785-confusing-named-region.stderr index 3b731d9c60a..b69033a0eda 100644 --- a/tests/ui/async-await/issue-75785-confusing-named-region.stderr +++ b/tests/ui/async-await/issue-75785-confusing-named-region.stderr @@ -4,9 +4,9 @@ error[E0506]: cannot assign to `*x` because it is borrowed LL | pub async fn async_fn(x: &mut i32) -> (&i32, &i32) { | - let's call the lifetime of this reference `'1` LL | let y = &*x; - | --- borrow of `*x` occurs here + | --- `*x` is borrowed here LL | *x += 1; - | ^^^^^^^ assignment to borrowed `*x` occurs here + | ^^^^^^^ `*x` is assigned to here but it was already borrowed LL | (&32, y) | -------- returning this value requires that `*x` is borrowed for `'1` diff --git a/tests/ui/async-await/multiple-lifetimes/ret-ref.stderr b/tests/ui/async-await/multiple-lifetimes/ret-ref.stderr index d86e84033b8..a599ac1d92f 100644 --- a/tests/ui/async-await/multiple-lifetimes/ret-ref.stderr +++ b/tests/ui/async-await/multiple-lifetimes/ret-ref.stderr @@ -2,9 +2,9 @@ error[E0506]: cannot assign to `a` because it is borrowed --> $DIR/ret-ref.rs:16:5 | LL | let future = multiple_named_lifetimes(&a, &b); - | -- borrow of `a` occurs here + | -- `a` is borrowed here LL | a += 1; - | ^^^^^^ assignment to borrowed `a` occurs here + | ^^^^^^ `a` is assigned to here but it was already borrowed LL | b += 1; LL | let p = future.await; | ------ borrow later used here @@ -13,10 +13,10 @@ error[E0506]: cannot assign to `b` because it is borrowed --> $DIR/ret-ref.rs:17:5 | LL | let future = multiple_named_lifetimes(&a, &b); - | -- borrow of `b` occurs here + | -- `b` is borrowed here LL | a += 1; LL | b += 1; - | ^^^^^^ assignment to borrowed `b` occurs here + | ^^^^^^ `b` is assigned to here but it was already borrowed LL | let p = future.await; | ------ borrow later used here @@ -24,10 +24,10 @@ error[E0506]: cannot assign to `a` because it is borrowed --> $DIR/ret-ref.rs:28:5 | LL | let future = multiple_named_lifetimes(&a, &b); - | -- borrow of `a` occurs here + | -- `a` is borrowed here LL | let p = future.await; LL | a += 1; - | ^^^^^^ assignment to borrowed `a` occurs here + | ^^^^^^ `a` is assigned to here but it was already borrowed LL | b += 1; LL | drop(p); | - borrow later used here diff --git a/tests/ui/augmented-assignments.rs b/tests/ui/augmented-assignments.rs index 20c7fb3a983..bd2435a78bf 100644 --- a/tests/ui/augmented-assignments.rs +++ b/tests/ui/augmented-assignments.rs @@ -9,7 +9,7 @@ impl AddAssign for Int { } fn main() { - let mut x = Int(1); + let mut x = Int(1); //~ NOTE binding `x` declared here x //~^ NOTE borrow of `x` occurs here += diff --git a/tests/ui/augmented-assignments.stderr b/tests/ui/augmented-assignments.stderr index 2910c910d55..d1096aea279 100644 --- a/tests/ui/augmented-assignments.stderr +++ b/tests/ui/augmented-assignments.stderr @@ -1,6 +1,8 @@ error[E0505]: cannot move out of `x` because it is borrowed --> $DIR/augmented-assignments.rs:16:5 | +LL | let mut x = Int(1); + | ----- binding `x` declared here LL | x | - borrow of `x` occurs here ... diff --git a/tests/ui/binop/binop-move-semantics.stderr b/tests/ui/binop/binop-move-semantics.stderr index dae267da05d..8645169b98a 100644 --- a/tests/ui/binop/binop-move-semantics.stderr +++ b/tests/ui/binop/binop-move-semantics.stderr @@ -41,6 +41,8 @@ LL | fn move_then_borrow<T: Add<Output=()> + Clone + Copy>(x: T) { error[E0505]: cannot move out of `x` because it is borrowed --> $DIR/binop-move-semantics.rs:21:5 | +LL | fn move_borrowed<T: Add<Output=()>>(x: T, mut y: T) { + | - binding `x` declared here LL | let m = &x; | -- borrow of `x` occurs here ... @@ -53,6 +55,9 @@ LL | use_mut(n); use_imm(m); error[E0505]: cannot move out of `y` because it is borrowed --> $DIR/binop-move-semantics.rs:23:5 | +LL | fn move_borrowed<T: Add<Output=()>>(x: T, mut y: T) { + | ----- binding `y` declared here +LL | let m = &x; LL | let n = &mut y; | ------ borrow of `y` occurs here ... diff --git a/tests/ui/borrowck/borrow-tuple-fields.stderr b/tests/ui/borrowck/borrow-tuple-fields.stderr index befa751a600..d7d3efe492c 100644 --- a/tests/ui/borrowck/borrow-tuple-fields.stderr +++ b/tests/ui/borrowck/borrow-tuple-fields.stderr @@ -1,6 +1,8 @@ error[E0505]: cannot move out of `x` because it is borrowed --> $DIR/borrow-tuple-fields.rs:12:13 | +LL | let x: (Box<_>, _) = (Box::new(1), 2); + | - binding `x` declared here LL | let r = &x.0; | ---- borrow of `x.0` occurs here LL | let y = x; @@ -32,6 +34,8 @@ LL | a.use_ref(); error[E0505]: cannot move out of `x` because it is borrowed --> $DIR/borrow-tuple-fields.rs:28:13 | +LL | let x = Foo(Box::new(1), 2); + | - binding `x` declared here LL | let r = &x.0; | ---- borrow of `x.0` occurs here LL | let y = x; diff --git a/tests/ui/borrowck/borrowck-anon-fields-variant.stderr b/tests/ui/borrowck/borrowck-anon-fields-variant.stderr index 98f6f00a7d4..c1d668f74ef 100644 --- a/tests/ui/borrowck/borrowck-anon-fields-variant.stderr +++ b/tests/ui/borrowck/borrowck-anon-fields-variant.stderr @@ -2,7 +2,7 @@ error[E0503]: cannot use `y` because it was mutably borrowed --> $DIR/borrowck-anon-fields-variant.rs:16:19 | LL | Foo::Y(ref mut a, _) => a, - | --------- borrow of `y.0` occurs here + | --------- `y.0` is borrowed here ... LL | let b = match y { | ^ use of borrowed `y.0` @@ -14,7 +14,7 @@ error[E0503]: cannot use `y` because it was mutably borrowed --> $DIR/borrowck-anon-fields-variant.rs:34:19 | LL | Foo::Y(ref mut a, _) => a, - | --------- borrow of `y.0` occurs here + | --------- `y.0` is borrowed here ... LL | let b = match y { | ^ use of borrowed `y.0` diff --git a/tests/ui/borrowck/borrowck-assign-comp.stderr b/tests/ui/borrowck/borrowck-assign-comp.stderr index 2b7cef7b325..d35f2331a76 100644 --- a/tests/ui/borrowck/borrowck-assign-comp.stderr +++ b/tests/ui/borrowck/borrowck-assign-comp.stderr @@ -2,10 +2,10 @@ error[E0506]: cannot assign to `p.x` because it is borrowed --> $DIR/borrowck-assign-comp.rs:10:5 | LL | let q = &p; - | -- borrow of `p.x` occurs here + | -- `p.x` is borrowed here ... LL | p.x = 5; - | ^^^^^^^ assignment to borrowed `p.x` occurs here + | ^^^^^^^ `p.x` is assigned to here but it was already borrowed LL | q.x; | --- borrow later used here @@ -13,9 +13,9 @@ error[E0506]: cannot assign to `p` because it is borrowed --> $DIR/borrowck-assign-comp.rs:20:5 | LL | let q = &p.y; - | ---- borrow of `p` occurs here + | ---- `p` is borrowed here LL | p = Point {x: 5, y: 7}; - | ^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `p` occurs here + | ^^^^^^^^^^^^^^^^^^^^^^ `p` is assigned to here but it was already borrowed LL | p.x; // silence warning LL | *q; // stretch loan | -- borrow later used here @@ -24,9 +24,9 @@ error[E0506]: cannot assign to `p.y` because it is borrowed --> $DIR/borrowck-assign-comp.rs:31:5 | LL | let q = &p.y; - | ---- borrow of `p.y` occurs here + | ---- `p.y` is borrowed here LL | p.y = 5; - | ^^^^^^^ assignment to borrowed `p.y` occurs here + | ^^^^^^^ `p.y` is assigned to here but it was already borrowed LL | *q; | -- borrow later used here diff --git a/tests/ui/borrowck/borrowck-assign-to-andmut-in-borrowed-loc.stderr b/tests/ui/borrowck/borrowck-assign-to-andmut-in-borrowed-loc.stderr index 0b21d113f74..8c0a8efcc18 100644 --- a/tests/ui/borrowck/borrowck-assign-to-andmut-in-borrowed-loc.stderr +++ b/tests/ui/borrowck/borrowck-assign-to-andmut-in-borrowed-loc.stderr @@ -2,7 +2,7 @@ error[E0503]: cannot use `*y.pointer` because it was mutably borrowed --> $DIR/borrowck-assign-to-andmut-in-borrowed-loc.rs:18:9 | LL | let z = copy_borrowed_ptr(&mut y); - | ------ borrow of `y` occurs here + | ------ `y` is borrowed here LL | *y.pointer += 1; | ^^^^^^^^^^^^^^^ use of borrowed `y` ... @@ -13,9 +13,9 @@ error[E0506]: cannot assign to `*y.pointer` because it is borrowed --> $DIR/borrowck-assign-to-andmut-in-borrowed-loc.rs:18:9 | LL | let z = copy_borrowed_ptr(&mut y); - | ------ borrow of `*y.pointer` occurs here + | ------ `*y.pointer` is borrowed here LL | *y.pointer += 1; - | ^^^^^^^^^^^^^^^ assignment to borrowed `*y.pointer` occurs here + | ^^^^^^^^^^^^^^^ `*y.pointer` is assigned to here but it was already borrowed ... LL | *z.pointer += 1; | --------------- borrow later used here diff --git a/tests/ui/borrowck/borrowck-bad-nested-calls-move.stderr b/tests/ui/borrowck/borrowck-bad-nested-calls-move.stderr index 371bcf2b69c..e582ec605de 100644 --- a/tests/ui/borrowck/borrowck-bad-nested-calls-move.stderr +++ b/tests/ui/borrowck/borrowck-bad-nested-calls-move.stderr @@ -1,6 +1,9 @@ error[E0505]: cannot move out of `a` because it is borrowed --> $DIR/borrowck-bad-nested-calls-move.rs:25:9 | +LL | let mut a: Box<_> = Box::new(1); + | ----- binding `a` declared here +... LL | add( | --- borrow later used by call LL | &*a, @@ -11,6 +14,8 @@ LL | a); error[E0505]: cannot move out of `a` because it is borrowed --> $DIR/borrowck-bad-nested-calls-move.rs:32:9 | +LL | let mut a: Box<_> = Box::new(1); + | ----- binding `a` declared here LL | add( | --- borrow later used by call LL | &*a, diff --git a/tests/ui/borrowck/borrowck-closures-mut-and-imm.stderr b/tests/ui/borrowck/borrowck-closures-mut-and-imm.stderr index fadcd11a592..8a7870e0c44 100644 --- a/tests/ui/borrowck/borrowck-closures-mut-and-imm.stderr +++ b/tests/ui/borrowck/borrowck-closures-mut-and-imm.stderr @@ -49,9 +49,9 @@ error[E0506]: cannot assign to `x` because it is borrowed LL | let c2 = || x * 5; | -- - borrow occurs due to use in closure | | - | borrow of `x` occurs here + | `x` is borrowed here LL | x = 5; - | ^^^^^ assignment to borrowed `x` occurs here + | ^^^^^ `x` is assigned to here but it was already borrowed LL | LL | drop(c2); | -- borrow later used here @@ -62,9 +62,9 @@ error[E0506]: cannot assign to `x` because it is borrowed LL | let c1 = || get(&x); | -- - borrow occurs due to use in closure | | - | borrow of `x` occurs here + | `x` is borrowed here LL | x = 5; - | ^^^^^ assignment to borrowed `x` occurs here + | ^^^^^ `x` is assigned to here but it was already borrowed LL | LL | drop(c1); | -- borrow later used here @@ -75,9 +75,9 @@ error[E0506]: cannot assign to `*x` because it is borrowed LL | let c1 = || get(&*x); | -- -- borrow occurs due to use in closure | | - | borrow of `*x` occurs here + | `*x` is borrowed here LL | *x = 5; - | ^^^^^^ assignment to borrowed `*x` occurs here + | ^^^^^^ `*x` is assigned to here but it was already borrowed LL | LL | drop(c1); | -- borrow later used here @@ -88,9 +88,9 @@ error[E0506]: cannot assign to `*x.f` because it is borrowed LL | let c1 = || get(&*x.f); | -- ---- borrow occurs due to use in closure | | - | borrow of `*x.f` occurs here + | `*x.f` is borrowed here LL | *x.f = 5; - | ^^^^^^^^ assignment to borrowed `*x.f` occurs here + | ^^^^^^^^ `*x.f` is assigned to here but it was already borrowed LL | LL | drop(c1); | -- borrow later used here diff --git a/tests/ui/borrowck/borrowck-describe-lvalue.stderr b/tests/ui/borrowck/borrowck-describe-lvalue.stderr index 2c1b9c10d46..cb29c9fdac3 100644 --- a/tests/ui/borrowck/borrowck-describe-lvalue.stderr +++ b/tests/ui/borrowck/borrowck-describe-lvalue.stderr @@ -45,7 +45,7 @@ error[E0503]: cannot use `f.x` because it was mutably borrowed --> $DIR/borrowck-describe-lvalue.rs:37:9 | LL | let x = f.x(); - | ----- borrow of `f` occurs here + | ----- `f` is borrowed here LL | f.x; | ^^^ use of borrowed `f` LL | drop(x); @@ -55,7 +55,7 @@ error[E0503]: cannot use `g.0` because it was mutably borrowed --> $DIR/borrowck-describe-lvalue.rs:44:9 | LL | let x = g.x(); - | ----- borrow of `g` occurs here + | ----- `g` is borrowed here LL | g.0; | ^^^ use of borrowed `g` LL | drop(x); @@ -65,7 +65,7 @@ error[E0503]: cannot use `h.0` because it was mutably borrowed --> $DIR/borrowck-describe-lvalue.rs:51:9 | LL | let x = &mut h.0; - | -------- borrow of `h.0` occurs here + | -------- `h.0` is borrowed here LL | h.0; | ^^^ use of borrowed `h.0` LL | drop(x); @@ -75,7 +75,7 @@ error[E0503]: cannot use `e.0` because it was mutably borrowed --> $DIR/borrowck-describe-lvalue.rs:59:20 | LL | let x = e.x(); - | ----- borrow of `e` occurs here + | ----- `e` is borrowed here LL | match e { LL | Baz::X(value) => value | ^^^^^ use of borrowed `e` @@ -87,7 +87,7 @@ error[E0503]: cannot use `u.a` because it was mutably borrowed --> $DIR/borrowck-describe-lvalue.rs:67:9 | LL | let x = &mut u.a; - | -------- borrow of `u.a` occurs here + | -------- `u.a` is borrowed here LL | u.a; | ^^^ use of borrowed `u.a` LL | drop(x); @@ -97,7 +97,7 @@ error[E0503]: cannot use `f.x` because it was mutably borrowed --> $DIR/borrowck-describe-lvalue.rs:74:9 | LL | let x = f.x(); - | ----- borrow of `*f` occurs here + | ----- `*f` is borrowed here LL | f.x; | ^^^ use of borrowed `*f` LL | drop(x); @@ -107,7 +107,7 @@ error[E0503]: cannot use `g.0` because it was mutably borrowed --> $DIR/borrowck-describe-lvalue.rs:81:9 | LL | let x = g.x(); - | ----- borrow of `*g` occurs here + | ----- `*g` is borrowed here LL | g.0; | ^^^ use of borrowed `*g` LL | drop(x); @@ -117,7 +117,7 @@ error[E0503]: cannot use `h.0` because it was mutably borrowed --> $DIR/borrowck-describe-lvalue.rs:88:9 | LL | let x = &mut h.0; - | -------- borrow of `h.0` occurs here + | -------- `h.0` is borrowed here LL | h.0; | ^^^ use of borrowed `h.0` LL | drop(x); @@ -127,7 +127,7 @@ error[E0503]: cannot use `e.0` because it was mutably borrowed --> $DIR/borrowck-describe-lvalue.rs:96:20 | LL | let x = e.x(); - | ----- borrow of `*e` occurs here + | ----- `*e` is borrowed here LL | match *e { LL | Baz::X(value) => value | ^^^^^ use of borrowed `*e` @@ -139,7 +139,7 @@ error[E0503]: cannot use `u.a` because it was mutably borrowed --> $DIR/borrowck-describe-lvalue.rs:105:9 | LL | let x = &mut u.a; - | -------- borrow of `u.a` occurs here + | -------- `u.a` is borrowed here LL | u.a; | ^^^ use of borrowed `u.a` LL | drop(x); @@ -149,7 +149,7 @@ error[E0503]: cannot use `v[..]` because it was mutably borrowed --> $DIR/borrowck-describe-lvalue.rs:113:15 | LL | let x = &mut v; - | ------ borrow of `v` occurs here + | ------ `v` is borrowed here LL | match v { LL | &[x, _, .., _, _] => println!("{}", x), | ^ use of borrowed `v` @@ -161,7 +161,7 @@ error[E0503]: cannot use `v[..]` because it was mutably borrowed --> $DIR/borrowck-describe-lvalue.rs:118:18 | LL | let x = &mut v; - | ------ borrow of `v` occurs here + | ------ `v` is borrowed here ... LL | &[_, x, .., _, _] => println!("{}", x), | ^ use of borrowed `v` @@ -173,7 +173,7 @@ error[E0503]: cannot use `v[..]` because it was mutably borrowed --> $DIR/borrowck-describe-lvalue.rs:123:25 | LL | let x = &mut v; - | ------ borrow of `v` occurs here + | ------ `v` is borrowed here ... LL | &[_, _, .., x, _] => println!("{}", x), | ^ use of borrowed `v` @@ -185,7 +185,7 @@ error[E0503]: cannot use `v[..]` because it was mutably borrowed --> $DIR/borrowck-describe-lvalue.rs:128:28 | LL | let x = &mut v; - | ------ borrow of `v` occurs here + | ------ `v` is borrowed here ... LL | &[_, _, .., _, x] => println!("{}", x), | ^ use of borrowed `v` @@ -197,7 +197,7 @@ error[E0503]: cannot use `v[..]` because it was mutably borrowed --> $DIR/borrowck-describe-lvalue.rs:139:15 | LL | let x = &mut v; - | ------ borrow of `v` occurs here + | ------ `v` is borrowed here LL | match v { LL | &[x @ ..] => println!("{:?}", x), | ^ use of borrowed `v` @@ -209,7 +209,7 @@ error[E0503]: cannot use `v[..]` because it was mutably borrowed --> $DIR/borrowck-describe-lvalue.rs:144:18 | LL | let x = &mut v; - | ------ borrow of `v` occurs here + | ------ `v` is borrowed here ... LL | &[_, x @ ..] => println!("{:?}", x), | ^ use of borrowed `v` @@ -221,7 +221,7 @@ error[E0503]: cannot use `v[..]` because it was mutably borrowed --> $DIR/borrowck-describe-lvalue.rs:149:15 | LL | let x = &mut v; - | ------ borrow of `v` occurs here + | ------ `v` is borrowed here ... LL | &[x @ .., _] => println!("{:?}", x), | ^ use of borrowed `v` @@ -233,7 +233,7 @@ error[E0503]: cannot use `v[..]` because it was mutably borrowed --> $DIR/borrowck-describe-lvalue.rs:154:18 | LL | let x = &mut v; - | ------ borrow of `v` occurs here + | ------ `v` is borrowed here ... LL | &[_, x @ .., _] => println!("{:?}", x), | ^ use of borrowed `v` @@ -245,7 +245,7 @@ error[E0503]: cannot use `e` because it was mutably borrowed --> $DIR/borrowck-describe-lvalue.rs:166:15 | LL | let x = &mut e; - | ------ borrow of `e` occurs here + | ------ `e` is borrowed here LL | match e { | ^ use of borrowed `e` ... @@ -304,7 +304,7 @@ error[E0503]: cannot use `*v` because it was mutably borrowed --> $DIR/borrowck-describe-lvalue.rs:232:9 | LL | let x = &mut v; - | ------ borrow of `v` occurs here + | ------ `v` is borrowed here LL | v[0].y; | ^^^^ use of borrowed `v` ... @@ -315,7 +315,7 @@ error[E0503]: cannot use `v[_].y` because it was mutably borrowed --> $DIR/borrowck-describe-lvalue.rs:232:9 | LL | let x = &mut v; - | ------ borrow of `v` occurs here + | ------ `v` is borrowed here LL | v[0].y; | ^^^^^^ use of borrowed `v` ... diff --git a/tests/ui/borrowck/borrowck-field-sensitivity.stderr b/tests/ui/borrowck/borrowck-field-sensitivity.stderr index e009f5913ed..11812847dd1 100644 --- a/tests/ui/borrowck/borrowck-field-sensitivity.stderr +++ b/tests/ui/borrowck/borrowck-field-sensitivity.stderr @@ -41,6 +41,8 @@ LL | let p = &x.b; error[E0505]: cannot move out of `x.b` because it is borrowed --> $DIR/borrowck-field-sensitivity.rs:34:10 | +LL | let x = A { a: 1, b: Box::new(2) }; + | - binding `x` declared here LL | let p = &x.b; | ---- borrow of `x.b` occurs here LL | drop(x.b); @@ -51,6 +53,8 @@ LL | drop(**p); error[E0505]: cannot move out of `x.b` because it is borrowed --> $DIR/borrowck-field-sensitivity.rs:41:14 | +LL | let x = A { a: 1, b: Box::new(2) }; + | - binding `x` declared here LL | let p = &x.b; | ---- borrow of `x.b` occurs here LL | let _y = A { a: 3, .. x }; diff --git a/tests/ui/borrowck/borrowck-imm-ref-to-mut-rec-field-issue-3162-c.stderr b/tests/ui/borrowck/borrowck-imm-ref-to-mut-rec-field-issue-3162-c.stderr index a66db05ccc5..1a20ec85fc0 100644 --- a/tests/ui/borrowck/borrowck-imm-ref-to-mut-rec-field-issue-3162-c.stderr +++ b/tests/ui/borrowck/borrowck-imm-ref-to-mut-rec-field-issue-3162-c.stderr @@ -2,10 +2,10 @@ error[E0506]: cannot assign to `_a` because it is borrowed --> $DIR/borrowck-imm-ref-to-mut-rec-field-issue-3162-c.rs:6:9 | LL | let b = &mut _a; - | ------- borrow of `_a` occurs here + | ------- `_a` is borrowed here ... LL | _a = 4; - | ^^^^^^ assignment to borrowed `_a` occurs here + | ^^^^^^ `_a` is assigned to here but it was already borrowed ... LL | drop(b); | - borrow later used here diff --git a/tests/ui/borrowck/borrowck-issue-14498.stderr b/tests/ui/borrowck/borrowck-issue-14498.stderr index 42a55b7a854..374c5ee3ed2 100644 --- a/tests/ui/borrowck/borrowck-issue-14498.stderr +++ b/tests/ui/borrowck/borrowck-issue-14498.stderr @@ -13,10 +13,10 @@ error[E0506]: cannot assign to `**y` because it is borrowed --> $DIR/borrowck-issue-14498.rs:25:5 | LL | let p = &y; - | -- borrow of `**y` occurs here + | -- `**y` is borrowed here LL | let q = &***p; LL | **y = 2; - | ^^^^^^^ assignment to borrowed `**y` occurs here + | ^^^^^^^ `**y` is assigned to here but it was already borrowed LL | drop(p); | - borrow later used here @@ -24,10 +24,10 @@ error[E0506]: cannot assign to `**y` because it is borrowed --> $DIR/borrowck-issue-14498.rs:35:5 | LL | let p = &y; - | -- borrow of `**y` occurs here + | -- `**y` is borrowed here LL | let q = &***p; LL | **y = 2; - | ^^^^^^^ assignment to borrowed `**y` occurs here + | ^^^^^^^ `**y` is assigned to here but it was already borrowed LL | drop(p); | - borrow later used here @@ -35,10 +35,10 @@ error[E0506]: cannot assign to `**y` because it is borrowed --> $DIR/borrowck-issue-14498.rs:45:5 | LL | let p = &y; - | -- borrow of `**y` occurs here + | -- `**y` is borrowed here LL | let q = &***p; LL | **y = 2; - | ^^^^^^^ assignment to borrowed `**y` occurs here + | ^^^^^^^ `**y` is assigned to here but it was already borrowed LL | drop(p); | - borrow later used here @@ -46,10 +46,10 @@ error[E0506]: cannot assign to `**y` because it is borrowed --> $DIR/borrowck-issue-14498.rs:55:5 | LL | let p = &y; - | -- borrow of `**y` occurs here + | -- `**y` is borrowed here LL | let q = &***p; LL | **y = 2; - | ^^^^^^^ assignment to borrowed `**y` occurs here + | ^^^^^^^ `**y` is assigned to here but it was already borrowed LL | drop(p); | - borrow later used here @@ -57,10 +57,10 @@ error[E0506]: cannot assign to `**y.a` because it is borrowed --> $DIR/borrowck-issue-14498.rs:65:5 | LL | let p = &y.a; - | ---- borrow of `**y.a` occurs here + | ---- `**y.a` is borrowed here LL | let q = &***p; LL | **y.a = 2; - | ^^^^^^^^^ assignment to borrowed `**y.a` occurs here + | ^^^^^^^^^ `**y.a` is assigned to here but it was already borrowed LL | drop(p); | - borrow later used here @@ -68,10 +68,10 @@ error[E0506]: cannot assign to `**y.a` because it is borrowed --> $DIR/borrowck-issue-14498.rs:75:5 | LL | let p = &y.a; - | ---- borrow of `**y.a` occurs here + | ---- `**y.a` is borrowed here LL | let q = &***p; LL | **y.a = 2; - | ^^^^^^^^^ assignment to borrowed `**y.a` occurs here + | ^^^^^^^^^ `**y.a` is assigned to here but it was already borrowed LL | drop(p); | - borrow later used here @@ -79,10 +79,10 @@ error[E0506]: cannot assign to `**y.a` because it is borrowed --> $DIR/borrowck-issue-14498.rs:85:5 | LL | let p = &y.a; - | ---- borrow of `**y.a` occurs here + | ---- `**y.a` is borrowed here LL | let q = &***p; LL | **y.a = 2; - | ^^^^^^^^^ assignment to borrowed `**y.a` occurs here + | ^^^^^^^^^ `**y.a` is assigned to here but it was already borrowed LL | drop(p); | - borrow later used here @@ -90,10 +90,10 @@ error[E0506]: cannot assign to `**y.a` because it is borrowed --> $DIR/borrowck-issue-14498.rs:95:5 | LL | let p = &y.a; - | ---- borrow of `**y.a` occurs here + | ---- `**y.a` is borrowed here LL | let q = &***p; LL | **y.a = 2; - | ^^^^^^^^^ assignment to borrowed `**y.a` occurs here + | ^^^^^^^^^ `**y.a` is assigned to here but it was already borrowed LL | drop(p); | - borrow later used here diff --git a/tests/ui/borrowck/borrowck-lend-flow-match.stderr b/tests/ui/borrowck/borrowck-lend-flow-match.stderr index 66f1cd9bd56..6cdce7bee88 100644 --- a/tests/ui/borrowck/borrowck-lend-flow-match.stderr +++ b/tests/ui/borrowck/borrowck-lend-flow-match.stderr @@ -2,9 +2,9 @@ error[E0506]: cannot assign to `x` because it is borrowed --> $DIR/borrowck-lend-flow-match.rs:12:13 | LL | Some(ref r) => { - | ----- borrow of `x` occurs here + | ----- `x` is borrowed here LL | x = Some(1); - | ^^^^^^^^^^^ assignment to borrowed `x` occurs here + | ^^^^^^^^^^^ `x` is assigned to here but it was already borrowed LL | drop(r); | - borrow later used here diff --git a/tests/ui/borrowck/borrowck-loan-blocks-move-cc.stderr b/tests/ui/borrowck/borrowck-loan-blocks-move-cc.stderr index 3548da35b61..6eabfff9054 100644 --- a/tests/ui/borrowck/borrowck-loan-blocks-move-cc.stderr +++ b/tests/ui/borrowck/borrowck-loan-blocks-move-cc.stderr @@ -1,6 +1,8 @@ error[E0505]: cannot move out of `v` because it is borrowed --> $DIR/borrowck-loan-blocks-move-cc.rs:14:19 | +LL | let v: Box<_> = Box::new(3); + | - binding `v` declared here LL | let w = &v; | -- borrow of `v` occurs here LL | thread::spawn(move|| { @@ -15,6 +17,8 @@ LL | w.use_ref(); error[E0505]: cannot move out of `v` because it is borrowed --> $DIR/borrowck-loan-blocks-move-cc.rs:24:19 | +LL | let v: Box<_> = Box::new(3); + | - binding `v` declared here LL | let w = &v; | -- borrow of `v` occurs here LL | thread::spawn(move|| { diff --git a/tests/ui/borrowck/borrowck-loan-blocks-move.stderr b/tests/ui/borrowck/borrowck-loan-blocks-move.stderr index b5c6b101f76..38e06fa0187 100644 --- a/tests/ui/borrowck/borrowck-loan-blocks-move.stderr +++ b/tests/ui/borrowck/borrowck-loan-blocks-move.stderr @@ -1,6 +1,8 @@ error[E0505]: cannot move out of `v` because it is borrowed --> $DIR/borrowck-loan-blocks-move.rs:11:10 | +LL | let v = Box::new(3); + | - binding `v` declared here LL | let w = &v; | -- borrow of `v` occurs here LL | take(v); diff --git a/tests/ui/borrowck/borrowck-loan-of-static-data-issue-27616.stderr b/tests/ui/borrowck/borrowck-loan-of-static-data-issue-27616.stderr index 6994c837dfc..311369a260d 100644 --- a/tests/ui/borrowck/borrowck-loan-of-static-data-issue-27616.stderr +++ b/tests/ui/borrowck/borrowck-loan-of-static-data-issue-27616.stderr @@ -2,12 +2,12 @@ error[E0506]: cannot assign to `*s` because it is borrowed --> $DIR/borrowck-loan-of-static-data-issue-27616.rs:16:5 | LL | let alias: &'static mut String = s; - | ------------------- - borrow of `*s` occurs here + | ------------------- - `*s` is borrowed here | | | type annotation requires that `*s` is borrowed for `'static` ... LL | *s = String::new(); - | ^^ assignment to borrowed `*s` occurs here + | ^^ `*s` is assigned to here but it was already borrowed error: aborting due to previous error diff --git a/tests/ui/borrowck/borrowck-loan-rcvr-overloaded-op.stderr b/tests/ui/borrowck/borrowck-loan-rcvr-overloaded-op.stderr index 24cc4933ef1..f1640d3b777 100644 --- a/tests/ui/borrowck/borrowck-loan-rcvr-overloaded-op.stderr +++ b/tests/ui/borrowck/borrowck-loan-rcvr-overloaded-op.stderr @@ -2,7 +2,7 @@ error[E0503]: cannot use `p` because it was mutably borrowed --> $DIR/borrowck-loan-rcvr-overloaded-op.rs:38:5 | LL | let q = &mut p; - | ------ borrow of `p` occurs here + | ------ `p` is borrowed here LL | LL | p + 3; | ^ use of borrowed `p` diff --git a/tests/ui/borrowck/borrowck-local-borrow-with-panic-outlives-fn.stderr b/tests/ui/borrowck/borrowck-local-borrow-with-panic-outlives-fn.stderr index 6ea6951ad96..0fdb1dabbc5 100644 --- a/tests/ui/borrowck/borrowck-local-borrow-with-panic-outlives-fn.stderr +++ b/tests/ui/borrowck/borrowck-local-borrow-with-panic-outlives-fn.stderr @@ -1,6 +1,8 @@ error[E0597]: `z.1` does not live long enough --> $DIR/borrowck-local-borrow-with-panic-outlives-fn.rs:3:15 | +LL | let mut z = (0, 0); + | ----- binding `z` declared here LL | *x = Some(&mut z.1); | ----------^^^^^^^^- | | | diff --git a/tests/ui/borrowck/borrowck-match-already-borrowed.stderr b/tests/ui/borrowck/borrowck-match-already-borrowed.stderr index 39047be9de6..e5c0ec960a4 100644 --- a/tests/ui/borrowck/borrowck-match-already-borrowed.stderr +++ b/tests/ui/borrowck/borrowck-match-already-borrowed.stderr @@ -2,7 +2,7 @@ error[E0503]: cannot use `foo` because it was mutably borrowed --> $DIR/borrowck-match-already-borrowed.rs:9:19 | LL | let p = &mut foo; - | -------- borrow of `foo` occurs here + | -------- `foo` is borrowed here LL | let _ = match foo { | ^^^ use of borrowed `foo` ... @@ -13,7 +13,7 @@ error[E0503]: cannot use `foo.0` because it was mutably borrowed --> $DIR/borrowck-match-already-borrowed.rs:12:16 | LL | let p = &mut foo; - | -------- borrow of `foo` occurs here + | -------- `foo` is borrowed here ... LL | Foo::A(x) => x | ^ use of borrowed `foo` @@ -25,7 +25,7 @@ error[E0503]: cannot use `x` because it was mutably borrowed --> $DIR/borrowck-match-already-borrowed.rs:22:9 | LL | let r = &mut x; - | ------ borrow of `x` occurs here + | ------ `x` is borrowed here LL | let _ = match x { LL | x => x + 1, | ^ use of borrowed `x` @@ -37,7 +37,7 @@ error[E0503]: cannot use `x` because it was mutably borrowed --> $DIR/borrowck-match-already-borrowed.rs:23:9 | LL | let r = &mut x; - | ------ borrow of `x` occurs here + | ------ `x` is borrowed here ... LL | y => y + 2, | ^ use of borrowed `x` diff --git a/tests/ui/borrowck/borrowck-move-by-capture.stderr b/tests/ui/borrowck/borrowck-move-by-capture.stderr index 8ddc48b2a99..6eaa1fa3169 100644 --- a/tests/ui/borrowck/borrowck-move-by-capture.stderr +++ b/tests/ui/borrowck/borrowck-move-by-capture.stderr @@ -10,7 +10,7 @@ LL | let _h = to_fn_once(move || -> isize { *bar }); | | | | | variable moved due to use in closure | | move occurs because `bar` has type `Box<isize>`, which does not implement the `Copy` trait - | move out of `bar` occurs here + | `bar` is moved here error: aborting due to previous error diff --git a/tests/ui/borrowck/borrowck-move-from-subpath-of-borrowed-path.stderr b/tests/ui/borrowck/borrowck-move-from-subpath-of-borrowed-path.stderr index f833abcc02a..bd94f1a4299 100644 --- a/tests/ui/borrowck/borrowck-move-from-subpath-of-borrowed-path.stderr +++ b/tests/ui/borrowck/borrowck-move-from-subpath-of-borrowed-path.stderr @@ -1,6 +1,8 @@ error[E0505]: cannot move out of `*a` because it is borrowed --> $DIR/borrowck-move-from-subpath-of-borrowed-path.rs:12:13 | +LL | let a: Box<Box<_>> = Box::new(Box::new(2)); + | - binding `a` declared here LL | let b = &a; | -- borrow of `a` occurs here LL | diff --git a/tests/ui/borrowck/borrowck-move-mut-base-ptr.stderr b/tests/ui/borrowck/borrowck-move-mut-base-ptr.stderr index d5ff0c501c4..cdad20c52bf 100644 --- a/tests/ui/borrowck/borrowck-move-mut-base-ptr.stderr +++ b/tests/ui/borrowck/borrowck-move-mut-base-ptr.stderr @@ -1,6 +1,8 @@ error[E0505]: cannot move out of `t0` because it is borrowed --> $DIR/borrowck-move-mut-base-ptr.rs:10:14 | +LL | fn foo(t0: &mut isize) { + | -- binding `t0` declared here LL | let p: &isize = &*t0; // Freezes `*t0` | ---- borrow of `*t0` occurs here LL | let t1 = t0; diff --git a/tests/ui/borrowck/borrowck-move-subcomponent.stderr b/tests/ui/borrowck/borrowck-move-subcomponent.stderr index 8c9083fcf13..341146bd18f 100644 --- a/tests/ui/borrowck/borrowck-move-subcomponent.stderr +++ b/tests/ui/borrowck/borrowck-move-subcomponent.stderr @@ -1,6 +1,8 @@ error[E0505]: cannot move out of `a.x` because it is borrowed --> $DIR/borrowck-move-subcomponent.rs:15:14 | +LL | let a : S = S { x : Box::new(1) }; + | - binding `a` declared here LL | let pb = &a; | -- borrow of `a` occurs here LL | let S { x: ax } = a; diff --git a/tests/ui/borrowck/borrowck-multiple-captures.stderr b/tests/ui/borrowck/borrowck-multiple-captures.stderr index f94cbc30db4..70abe7b346e 100644 --- a/tests/ui/borrowck/borrowck-multiple-captures.stderr +++ b/tests/ui/borrowck/borrowck-multiple-captures.stderr @@ -1,6 +1,8 @@ error[E0505]: cannot move out of `x1` because it is borrowed --> $DIR/borrowck-multiple-captures.rs:12:19 | +LL | let x1: Box<_> = Box::new(1); + | -- binding `x1` declared here LL | let p1 = &x1; | --- borrow of `x1` occurs here ... @@ -16,6 +18,8 @@ LL | borrow(&*p1); error[E0505]: cannot move out of `x2` because it is borrowed --> $DIR/borrowck-multiple-captures.rs:12:19 | +LL | let x2: Box<_> = Box::new(2); + | -- binding `x2` declared here LL | let p2 = &x2; | --- borrow of `x2` occurs here LL | thread::spawn(move|| { @@ -77,6 +81,8 @@ LL | drop(x); error[E0505]: cannot move out of `x` because it is borrowed --> $DIR/borrowck-multiple-captures.rs:38:19 | +LL | let x: Box<_> = Box::new(1); + | - binding `x` declared here LL | let p = &x; | -- borrow of `x` occurs here LL | thread::spawn(move|| { diff --git a/tests/ui/borrowck/borrowck-overloaded-index-and-overloaded-deref.stderr b/tests/ui/borrowck/borrowck-overloaded-index-and-overloaded-deref.stderr index 5d52e491918..7f42becd21c 100644 --- a/tests/ui/borrowck/borrowck-overloaded-index-and-overloaded-deref.stderr +++ b/tests/ui/borrowck/borrowck-overloaded-index-and-overloaded-deref.stderr @@ -2,9 +2,9 @@ error[E0506]: cannot assign to `v` because it is borrowed --> $DIR/borrowck-overloaded-index-and-overloaded-deref.rs:31:5 | LL | let i = &v[0].f; - | - borrow of `v` occurs here + | - `v` is borrowed here LL | v = MyVec { x: MyPtr { x: Foo { f: 23 } } }; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `v` occurs here + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `v` is assigned to here but it was already borrowed LL | LL | read(*i); | -- borrow later used here diff --git a/tests/ui/borrowck/borrowck-overloaded-index-autoderef.stderr b/tests/ui/borrowck/borrowck-overloaded-index-autoderef.stderr index 087f2ac799e..fb7af50bcb5 100644 --- a/tests/ui/borrowck/borrowck-overloaded-index-autoderef.stderr +++ b/tests/ui/borrowck/borrowck-overloaded-index-autoderef.stderr @@ -42,9 +42,9 @@ error[E0506]: cannot assign to `f.foo` because it is borrowed --> $DIR/borrowck-overloaded-index-autoderef.rs:71:5 | LL | let p = &f.foo[&s]; - | ----- borrow of `f.foo` occurs here + | ----- `f.foo` is borrowed here LL | f.foo = g; - | ^^^^^^^^^ assignment to borrowed `f.foo` occurs here + | ^^^^^^^^^ `f.foo` is assigned to here but it was already borrowed LL | p.use_ref(); | ----------- borrow later used here @@ -52,9 +52,9 @@ error[E0506]: cannot assign to `*f` because it is borrowed --> $DIR/borrowck-overloaded-index-autoderef.rs:77:5 | LL | let p = &f.foo[&s]; - | ----- borrow of `*f` occurs here + | ----- `*f` is borrowed here LL | *f = g; - | ^^^^^^ assignment to borrowed `*f` occurs here + | ^^^^^^ `*f` is assigned to here but it was already borrowed LL | p.use_ref(); | ----------- borrow later used here @@ -62,9 +62,9 @@ error[E0506]: cannot assign to `f.foo` because it is borrowed --> $DIR/borrowck-overloaded-index-autoderef.rs:83:5 | LL | let p = &mut f.foo[&s]; - | ----- borrow of `f.foo` occurs here + | ----- `f.foo` is borrowed here LL | f.foo = g; - | ^^^^^^^^^ assignment to borrowed `f.foo` occurs here + | ^^^^^^^^^ `f.foo` is assigned to here but it was already borrowed LL | p.use_mut(); | ----------- borrow later used here @@ -72,9 +72,9 @@ error[E0506]: cannot assign to `*f` because it is borrowed --> $DIR/borrowck-overloaded-index-autoderef.rs:89:5 | LL | let p = &mut f.foo[&s]; - | ----- borrow of `*f` occurs here + | ----- `*f` is borrowed here LL | *f = g; - | ^^^^^^ assignment to borrowed `*f` occurs here + | ^^^^^^ `*f` is assigned to here but it was already borrowed LL | p.use_mut(); | ----------- borrow later used here diff --git a/tests/ui/borrowck/borrowck-overloaded-index-move-index.stderr b/tests/ui/borrowck/borrowck-overloaded-index-move-index.stderr index fb0e274c291..7f8cc74a715 100644 --- a/tests/ui/borrowck/borrowck-overloaded-index-move-index.stderr +++ b/tests/ui/borrowck/borrowck-overloaded-index-move-index.stderr @@ -1,6 +1,8 @@ error[E0505]: cannot move out of `s` because it is borrowed --> $DIR/borrowck-overloaded-index-move-index.rs:50:22 | +LL | let mut s = "hello".to_string(); + | ----- binding `s` declared here LL | let rs = &mut s; | ------ borrow of `s` occurs here LL | @@ -13,6 +15,8 @@ LL | use_mut(rs); error[E0505]: cannot move out of `s` because it is borrowed --> $DIR/borrowck-overloaded-index-move-index.rs:53:7 | +LL | let mut s = "hello".to_string(); + | ----- binding `s` declared here LL | let rs = &mut s; | ------ borrow of `s` occurs here ... diff --git a/tests/ui/borrowck/borrowck-pat-reassign-binding.stderr b/tests/ui/borrowck/borrowck-pat-reassign-binding.stderr index 9e65ccf5a19..b86a8693881 100644 --- a/tests/ui/borrowck/borrowck-pat-reassign-binding.stderr +++ b/tests/ui/borrowck/borrowck-pat-reassign-binding.stderr @@ -2,10 +2,10 @@ error[E0506]: cannot assign to `x` because it is borrowed --> $DIR/borrowck-pat-reassign-binding.rs:10:11 | LL | Some(ref i) => { - | ----- borrow of `x` occurs here + | ----- `x` is borrowed here LL | // But on this branch, `i` is an outstanding borrow LL | x = Some(*i+1); - | ^^^^^^^^^^^^^^ assignment to borrowed `x` occurs here + | ^^^^^^^^^^^^^^ `x` is assigned to here but it was already borrowed LL | drop(i); | - borrow later used here diff --git a/tests/ui/borrowck/borrowck-unary-move.stderr b/tests/ui/borrowck/borrowck-unary-move.stderr index aab225ed4a4..f3b962059f5 100644 --- a/tests/ui/borrowck/borrowck-unary-move.stderr +++ b/tests/ui/borrowck/borrowck-unary-move.stderr @@ -1,6 +1,8 @@ error[E0505]: cannot move out of `x` because it is borrowed --> $DIR/borrowck-unary-move.rs:3:10 | +LL | fn foo(x: Box<isize>) -> isize { + | - binding `x` declared here LL | let y = &*x; | --- borrow of `*x` occurs here LL | free(x); diff --git a/tests/ui/borrowck/borrowck-union-borrow-nested.stderr b/tests/ui/borrowck/borrowck-union-borrow-nested.stderr index 4bd7d54cffe..a87a14e7cab 100644 --- a/tests/ui/borrowck/borrowck-union-borrow-nested.stderr +++ b/tests/ui/borrowck/borrowck-union-borrow-nested.stderr @@ -2,7 +2,7 @@ error[E0503]: cannot use `u.c` because it was mutably borrowed --> $DIR/borrowck-union-borrow-nested.rs:24:21 | LL | let ra = &mut u.s.a; - | ---------- borrow of `u.s.a` occurs here + | ---------- `u.s.a` is borrowed here LL | let b = u.c; | ^^^ use of borrowed `u.s.a` LL | ra.use_mut(); diff --git a/tests/ui/borrowck/borrowck-union-borrow.stderr b/tests/ui/borrowck/borrowck-union-borrow.stderr index 090c7b6b51a..11a28f6744b 100644 --- a/tests/ui/borrowck/borrowck-union-borrow.stderr +++ b/tests/ui/borrowck/borrowck-union-borrow.stderr @@ -12,9 +12,9 @@ error[E0506]: cannot assign to `u.a` because it is borrowed --> $DIR/borrowck-union-borrow.rs:28:13 | LL | let ra = &u.a; - | ---- borrow of `u.a` occurs here + | ---- `u.a` is borrowed here LL | u.a = 1; - | ^^^^^^^ assignment to borrowed `u.a` occurs here + | ^^^^^^^ `u.a` is assigned to here but it was already borrowed LL | drop(ra); | -- borrow later used here @@ -34,9 +34,9 @@ error[E0506]: cannot assign to `u.b` because it is borrowed --> $DIR/borrowck-union-borrow.rs:49:13 | LL | let ra = &u.a; - | ---- borrow of `u.b` occurs here + | ---- `u.b` is borrowed here LL | u.b = 1; - | ^^^^^^^ assignment to borrowed `u.b` occurs here + | ^^^^^^^ `u.b` is assigned to here but it was already borrowed LL | drop(ra); | -- borrow later used here @@ -54,7 +54,7 @@ error[E0503]: cannot use `u.a` because it was mutably borrowed --> $DIR/borrowck-union-borrow.rs:60:21 | LL | let ra = &mut u.a; - | -------- borrow of `u.a` occurs here + | -------- `u.a` is borrowed here LL | let a = u.a; | ^^^ use of borrowed `u.a` LL | drop(ra); @@ -74,9 +74,9 @@ error[E0506]: cannot assign to `u.a` because it is borrowed --> $DIR/borrowck-union-borrow.rs:70:13 | LL | let rma = &mut u.a; - | -------- borrow of `u.a` occurs here + | -------- `u.a` is borrowed here LL | u.a = 1; - | ^^^^^^^ assignment to borrowed `u.a` occurs here + | ^^^^^^^ `u.a` is assigned to here but it was already borrowed LL | drop(rma); | --- borrow later used here @@ -96,7 +96,7 @@ error[E0503]: cannot use `u.b` because it was mutably borrowed --> $DIR/borrowck-union-borrow.rs:81:21 | LL | let ra = &mut u.a; - | -------- borrow of `u.a` occurs here + | -------- `u.a` is borrowed here LL | let b = u.b; | ^^^ use of borrowed `u.a` LL | @@ -119,9 +119,9 @@ error[E0506]: cannot assign to `u.b` because it is borrowed --> $DIR/borrowck-union-borrow.rs:92:13 | LL | let rma = &mut u.a; - | -------- borrow of `u.b` occurs here + | -------- `u.b` is borrowed here LL | u.b = 1; - | ^^^^^^^ assignment to borrowed `u.b` occurs here + | ^^^^^^^ `u.b` is assigned to here but it was already borrowed LL | drop(rma); | --- borrow later used here diff --git a/tests/ui/borrowck/borrowck-use-mut-borrow.stderr b/tests/ui/borrowck/borrowck-use-mut-borrow.stderr index 91d69c51e81..4d300ae3c52 100644 --- a/tests/ui/borrowck/borrowck-use-mut-borrow.stderr +++ b/tests/ui/borrowck/borrowck-use-mut-borrow.stderr @@ -2,7 +2,7 @@ error[E0503]: cannot use `x` because it was mutably borrowed --> $DIR/borrowck-use-mut-borrow.rs:11:10 | LL | let p = &mut x; - | ------ borrow of `x` occurs here + | ------ `x` is borrowed here LL | drop(x); | ^ use of borrowed `x` LL | *p = 2; @@ -12,7 +12,7 @@ error[E0503]: cannot use `x` because it was mutably borrowed --> $DIR/borrowck-use-mut-borrow.rs:18:10 | LL | let p = &mut x.a; - | -------- borrow of `x.a` occurs here + | -------- `x.a` is borrowed here LL | drop(x); | ^ use of borrowed `x.a` LL | *p = 3; @@ -22,7 +22,7 @@ error[E0503]: cannot use `x.a` because it was mutably borrowed --> $DIR/borrowck-use-mut-borrow.rs:25:10 | LL | let p = &mut x; - | ------ borrow of `x` occurs here + | ------ `x` is borrowed here LL | drop(x.a); | ^^^ use of borrowed `x` LL | p.a = 3; @@ -32,7 +32,7 @@ error[E0503]: cannot use `x.a` because it was mutably borrowed --> $DIR/borrowck-use-mut-borrow.rs:32:10 | LL | let p = &mut x.a; - | -------- borrow of `x.a` occurs here + | -------- `x.a` is borrowed here LL | drop(x.a); | ^^^ use of borrowed `x.a` LL | *p = 3; @@ -42,7 +42,7 @@ error[E0503]: cannot use `x.a` because it was mutably borrowed --> $DIR/borrowck-use-mut-borrow.rs:39:13 | LL | let p = &mut x; - | ------ borrow of `x` occurs here + | ------ `x` is borrowed here LL | let y = A { b: 3, .. x }; | ^^^^^^^^^^^^^^^^ use of borrowed `x` LL | drop(y); @@ -53,7 +53,7 @@ error[E0503]: cannot use `x.a` because it was mutably borrowed --> $DIR/borrowck-use-mut-borrow.rs:47:13 | LL | let p = &mut x.a; - | -------- borrow of `x.a` occurs here + | -------- `x.a` is borrowed here LL | let y = A { b: 3, .. x }; | ^^^^^^^^^^^^^^^^ use of borrowed `x.a` LL | drop(y); @@ -64,7 +64,7 @@ error[E0503]: cannot use `*x` because it was mutably borrowed --> $DIR/borrowck-use-mut-borrow.rs:55:10 | LL | let p = &mut x; - | ------ borrow of `x` occurs here + | ------ `x` is borrowed here LL | drop(*x); | ^^ use of borrowed `x` LL | **p = 2; @@ -74,7 +74,7 @@ error[E0503]: cannot use `*x.b` because it was mutably borrowed --> $DIR/borrowck-use-mut-borrow.rs:62:10 | LL | let p = &mut x; - | ------ borrow of `x` occurs here + | ------ `x` is borrowed here LL | drop(*x.b); | ^^^^ use of borrowed `x` LL | p.a = 3; @@ -84,7 +84,7 @@ error[E0503]: cannot use `*x.b` because it was mutably borrowed --> $DIR/borrowck-use-mut-borrow.rs:69:10 | LL | let p = &mut x.b; - | -------- borrow of `x.b` occurs here + | -------- `x.b` is borrowed here LL | drop(*x.b); | ^^^^ use of borrowed `x.b` LL | **p = 3; diff --git a/tests/ui/borrowck/borrowck-vec-pattern-move-tail.stderr b/tests/ui/borrowck/borrowck-vec-pattern-move-tail.stderr index 0ac7df944d7..494d8c351a1 100644 --- a/tests/ui/borrowck/borrowck-vec-pattern-move-tail.stderr +++ b/tests/ui/borrowck/borrowck-vec-pattern-move-tail.stderr @@ -2,10 +2,10 @@ error[E0506]: cannot assign to `a[_]` because it is borrowed --> $DIR/borrowck-vec-pattern-move-tail.rs:8:5 | LL | [1, 2, ref tail @ ..] => tail, - | -------- borrow of `a[_]` occurs here + | -------- `a[_]` is borrowed here ... LL | a[2] = 0; - | ^^^^^^^^ assignment to borrowed `a[_]` occurs here + | ^^^^^^^^ `a[_]` is assigned to here but it was already borrowed LL | println!("t[0]: {}", t[0]); | ---- borrow later used here diff --git a/tests/ui/borrowck/borrowck-vec-pattern-nesting.rs b/tests/ui/borrowck/borrowck-vec-pattern-nesting.rs index 0e9284a2cad..1bda7a49713 100644 --- a/tests/ui/borrowck/borrowck-vec-pattern-nesting.rs +++ b/tests/ui/borrowck/borrowck-vec-pattern-nesting.rs @@ -5,9 +5,9 @@ fn a() { let mut vec = [Box::new(1), Box::new(2), Box::new(3)]; match vec { [box ref _a, _, _] => { - //~^ NOTE borrow of `vec[_]` occurs here + //~^ NOTE `vec[_]` is borrowed here vec[0] = Box::new(4); //~ ERROR cannot assign - //~^ NOTE assignment to borrowed `vec[_]` occurs here + //~^ NOTE `vec[_]` is assigned to here _a.use_ref(); //~^ NOTE borrow later used here } @@ -19,9 +19,9 @@ fn b() { let vec: &mut [Box<isize>] = &mut vec; match vec { &mut [ref _b @ ..] => { - //~^ borrow of `vec[_]` occurs here + //~^ `vec[_]` is borrowed here vec[0] = Box::new(4); //~ ERROR cannot assign - //~^ NOTE assignment to borrowed `vec[_]` occurs here + //~^ NOTE `vec[_]` is assigned to here _b.use_ref(); //~^ NOTE borrow later used here } diff --git a/tests/ui/borrowck/borrowck-vec-pattern-nesting.stderr b/tests/ui/borrowck/borrowck-vec-pattern-nesting.stderr index 0dc5e64e4ff..70b9e4f4433 100644 --- a/tests/ui/borrowck/borrowck-vec-pattern-nesting.stderr +++ b/tests/ui/borrowck/borrowck-vec-pattern-nesting.stderr @@ -2,10 +2,10 @@ error[E0506]: cannot assign to `vec[_]` because it is borrowed --> $DIR/borrowck-vec-pattern-nesting.rs:9:13 | LL | [box ref _a, _, _] => { - | ------ borrow of `vec[_]` occurs here + | ------ `vec[_]` is borrowed here LL | LL | vec[0] = Box::new(4); - | ^^^^^^ assignment to borrowed `vec[_]` occurs here + | ^^^^^^ `vec[_]` is assigned to here but it was already borrowed LL | LL | _a.use_ref(); | ------------ borrow later used here @@ -14,10 +14,10 @@ error[E0506]: cannot assign to `vec[_]` because it is borrowed --> $DIR/borrowck-vec-pattern-nesting.rs:23:13 | LL | &mut [ref _b @ ..] => { - | ------ borrow of `vec[_]` occurs here + | ------ `vec[_]` is borrowed here LL | LL | vec[0] = Box::new(4); - | ^^^^^^ assignment to borrowed `vec[_]` occurs here + | ^^^^^^ `vec[_]` is assigned to here but it was already borrowed LL | LL | _b.use_ref(); | ------------ borrow later used here diff --git a/tests/ui/borrowck/issue-25793.stderr b/tests/ui/borrowck/issue-25793.stderr index da3412f112d..27dab53e48f 100644 --- a/tests/ui/borrowck/issue-25793.stderr +++ b/tests/ui/borrowck/issue-25793.stderr @@ -5,7 +5,7 @@ LL | $this.width.unwrap() | ^^^^^^^^^^^ use of borrowed `*self` ... LL | let r = &mut *self; - | ---------- borrow of `*self` occurs here + | ---------- `*self` is borrowed here LL | r.get_size(width!(self)) | -------- ------------ in this macro invocation | | diff --git a/tests/ui/borrowck/issue-52713-bug.stderr b/tests/ui/borrowck/issue-52713-bug.stderr index 4abb6fb2c71..3f7715645e6 100644 --- a/tests/ui/borrowck/issue-52713-bug.stderr +++ b/tests/ui/borrowck/issue-52713-bug.stderr @@ -2,10 +2,10 @@ error[E0506]: cannot assign to `x` because it is borrowed --> $DIR/issue-52713-bug.rs:12:5 | LL | let y = &x; - | -- borrow of `x` occurs here + | -- `x` is borrowed here ... LL | x += 1; - | ^^^^^^ assignment to borrowed `x` occurs here + | ^^^^^^ `x` is assigned to here but it was already borrowed LL | println!("{}", y); | - borrow later used here diff --git a/tests/ui/borrowck/issue-58776-borrowck-scans-children.stderr b/tests/ui/borrowck/issue-58776-borrowck-scans-children.stderr index 57803247ba8..0870b423769 100644 --- a/tests/ui/borrowck/issue-58776-borrowck-scans-children.stderr +++ b/tests/ui/borrowck/issue-58776-borrowck-scans-children.stderr @@ -4,10 +4,10 @@ error[E0506]: cannot assign to `greeting` because it is borrowed LL | let res = (|| (|| &greeting)())(); | -- -------- borrow occurs due to use in closure | | - | borrow of `greeting` occurs here + | `greeting` is borrowed here LL | LL | greeting = "DEALLOCATED".to_string(); - | ^^^^^^^^ assignment to borrowed `greeting` occurs here + | ^^^^^^^^ `greeting` is assigned to here but it was already borrowed ... LL | println!("thread result: {:?}", res); | --- borrow later used here diff --git a/tests/ui/borrowck/issue-81365-1.stderr b/tests/ui/borrowck/issue-81365-1.stderr index d79394834dc..0d803b0427a 100644 --- a/tests/ui/borrowck/issue-81365-1.stderr +++ b/tests/ui/borrowck/issue-81365-1.stderr @@ -2,9 +2,9 @@ error[E0506]: cannot assign to `self.container_field` because it is borrowed --> $DIR/issue-81365-1.rs:21:9 | LL | let first = &self.target_field; - | ---- borrow of `self.container_field` occurs here + | ---- `self.container_field` is borrowed here LL | self.container_field = true; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `self.container_field` occurs here + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ `self.container_field` is assigned to here but it was already borrowed LL | first; | ----- borrow later used here | diff --git a/tests/ui/borrowck/issue-81365-10.stderr b/tests/ui/borrowck/issue-81365-10.stderr index 27123ef2be1..d0986e9f922 100644 --- a/tests/ui/borrowck/issue-81365-10.stderr +++ b/tests/ui/borrowck/issue-81365-10.stderr @@ -2,9 +2,9 @@ error[E0506]: cannot assign to `self.container_field` because it is borrowed --> $DIR/issue-81365-10.rs:21:9 | LL | let first = &self.deref().target_field; - | ------------ borrow of `self.container_field` occurs here + | ------------ `self.container_field` is borrowed here LL | self.container_field = true; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `self.container_field` occurs here + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ `self.container_field` is assigned to here but it was already borrowed LL | first; | ----- borrow later used here diff --git a/tests/ui/borrowck/issue-81365-11.stderr b/tests/ui/borrowck/issue-81365-11.stderr index 0770c136632..5f7e86f11dc 100644 --- a/tests/ui/borrowck/issue-81365-11.stderr +++ b/tests/ui/borrowck/issue-81365-11.stderr @@ -2,9 +2,9 @@ error[E0506]: cannot assign to `self.container_field` because it is borrowed --> $DIR/issue-81365-11.rs:27:9 | LL | let first = &mut self.target_field; - | ---- borrow of `self.container_field` occurs here + | ---- `self.container_field` is borrowed here LL | self.container_field = true; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `self.container_field` occurs here + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ `self.container_field` is assigned to here but it was already borrowed LL | first; | ----- borrow later used here diff --git a/tests/ui/borrowck/issue-81365-2.stderr b/tests/ui/borrowck/issue-81365-2.stderr index 764eaaa7cc7..d9aeaf15f20 100644 --- a/tests/ui/borrowck/issue-81365-2.stderr +++ b/tests/ui/borrowck/issue-81365-2.stderr @@ -2,9 +2,9 @@ error[E0506]: cannot assign to `self.container.container_field` because it is bo --> $DIR/issue-81365-2.rs:25:9 | LL | let first = &self.container.target_field; - | -------------- borrow of `self.container.container_field` occurs here + | -------------- `self.container.container_field` is borrowed here LL | self.container.container_field = true; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `self.container.container_field` occurs here + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `self.container.container_field` is assigned to here but it was already borrowed LL | first; | ----- borrow later used here | diff --git a/tests/ui/borrowck/issue-81365-3.stderr b/tests/ui/borrowck/issue-81365-3.stderr index 9447174fd21..0c0d1994baf 100644 --- a/tests/ui/borrowck/issue-81365-3.stderr +++ b/tests/ui/borrowck/issue-81365-3.stderr @@ -2,9 +2,9 @@ error[E0506]: cannot assign to `self.container.container_field` because it is bo --> $DIR/issue-81365-3.rs:32:9 | LL | let first = &self.target_field; - | ---- borrow of `self.container.container_field` occurs here + | ---- `self.container.container_field` is borrowed here LL | self.container.container_field = true; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `self.container.container_field` occurs here + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `self.container.container_field` is assigned to here but it was already borrowed LL | first; | ----- borrow later used here | diff --git a/tests/ui/borrowck/issue-81365-4.stderr b/tests/ui/borrowck/issue-81365-4.stderr index 0ab3fa92706..98093daa945 100644 --- a/tests/ui/borrowck/issue-81365-4.stderr +++ b/tests/ui/borrowck/issue-81365-4.stderr @@ -2,9 +2,9 @@ error[E0506]: cannot assign to `self.outer_field` because it is borrowed --> $DIR/issue-81365-4.rs:33:9 | LL | let first = &self.target_field; - | ---- borrow of `self.outer_field` occurs here + | ---- `self.outer_field` is borrowed here LL | self.outer_field = true; - | ^^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `self.outer_field` occurs here + | ^^^^^^^^^^^^^^^^^^^^^^^ `self.outer_field` is assigned to here but it was already borrowed LL | first; | ----- borrow later used here | diff --git a/tests/ui/borrowck/issue-81365-5.stderr b/tests/ui/borrowck/issue-81365-5.stderr index 20ff229ffe7..c00e48288ba 100644 --- a/tests/ui/borrowck/issue-81365-5.stderr +++ b/tests/ui/borrowck/issue-81365-5.stderr @@ -2,9 +2,9 @@ error[E0506]: cannot assign to `self.container_field` because it is borrowed --> $DIR/issue-81365-5.rs:28:9 | LL | let first = self.get(); - | ---------- borrow of `self.container_field` occurs here + | ---------- `self.container_field` is borrowed here LL | self.container_field = true; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `self.container_field` occurs here + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ `self.container_field` is assigned to here but it was already borrowed LL | first; | ----- borrow later used here | diff --git a/tests/ui/borrowck/issue-81365-6.stderr b/tests/ui/borrowck/issue-81365-6.stderr index 575aed73b46..e61dc95ecc8 100644 --- a/tests/ui/borrowck/issue-81365-6.stderr +++ b/tests/ui/borrowck/issue-81365-6.stderr @@ -2,9 +2,9 @@ error[E0506]: cannot assign to `self.container_field` because it is borrowed --> $DIR/issue-81365-6.rs:18:9 | LL | let first = &self[0]; - | ---- borrow of `self.container_field` occurs here + | ---- `self.container_field` is borrowed here LL | self.container_field = true; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `self.container_field` occurs here + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ `self.container_field` is assigned to here but it was already borrowed LL | first; | ----- borrow later used here | diff --git a/tests/ui/borrowck/issue-81365-7.stderr b/tests/ui/borrowck/issue-81365-7.stderr index 52d2d9e75a9..0565127e387 100644 --- a/tests/ui/borrowck/issue-81365-7.stderr +++ b/tests/ui/borrowck/issue-81365-7.stderr @@ -2,9 +2,9 @@ error[E0506]: cannot assign to `c.container_field` because it is borrowed --> $DIR/issue-81365-7.rs:20:5 | LL | let first = &c.target_field; - | - borrow of `c.container_field` occurs here + | - `c.container_field` is borrowed here LL | c.container_field = true; - | ^^^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `c.container_field` occurs here + | ^^^^^^^^^^^^^^^^^^^^^^^^ `c.container_field` is assigned to here but it was already borrowed LL | first; | ----- borrow later used here | diff --git a/tests/ui/borrowck/issue-81365-8.stderr b/tests/ui/borrowck/issue-81365-8.stderr index fd83e10a295..0ca732ff2ae 100644 --- a/tests/ui/borrowck/issue-81365-8.stderr +++ b/tests/ui/borrowck/issue-81365-8.stderr @@ -2,9 +2,9 @@ error[E0506]: cannot assign to `self.container_field` because it is borrowed --> $DIR/issue-81365-8.rs:21:9 | LL | let first = &(*self).target_field; - | ------- borrow of `self.container_field` occurs here + | ------- `self.container_field` is borrowed here LL | self.container_field = true; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `self.container_field` occurs here + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ `self.container_field` is assigned to here but it was already borrowed LL | first; | ----- borrow later used here | diff --git a/tests/ui/borrowck/issue-81365-9.stderr b/tests/ui/borrowck/issue-81365-9.stderr index c7d48214fd4..4d305268a0b 100644 --- a/tests/ui/borrowck/issue-81365-9.stderr +++ b/tests/ui/borrowck/issue-81365-9.stderr @@ -2,9 +2,9 @@ error[E0506]: cannot assign to `self.container_field` because it is borrowed --> $DIR/issue-81365-9.rs:21:9 | LL | let first = &Deref::deref(self).target_field; - | ---- borrow of `self.container_field` occurs here + | ---- `self.container_field` is borrowed here LL | self.container_field = true; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `self.container_field` occurs here + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ `self.container_field` is assigned to here but it was already borrowed LL | first; | ----- borrow later used here diff --git a/tests/ui/borrowck/two-phase-allow-access-during-reservation.nll_target.stderr b/tests/ui/borrowck/two-phase-allow-access-during-reservation.nll_target.stderr index a57ceb84739..1356c80493c 100644 --- a/tests/ui/borrowck/two-phase-allow-access-during-reservation.nll_target.stderr +++ b/tests/ui/borrowck/two-phase-allow-access-during-reservation.nll_target.stderr @@ -2,7 +2,7 @@ error[E0503]: cannot use `i` because it was mutably borrowed --> $DIR/two-phase-allow-access-during-reservation.rs:26:19 | LL | /*1*/ let p = &mut i; // (reservation of `i` starts here) - | ------ borrow of `i` occurs here + | ------ `i` is borrowed here LL | LL | /*2*/ let j = i; // OK: `i` is only reserved here | ^ use of borrowed `i` @@ -14,7 +14,7 @@ error[E0503]: cannot use `i` because it was mutably borrowed --> $DIR/two-phase-allow-access-during-reservation.rs:31:19 | LL | /*1*/ let p = &mut i; // (reservation of `i` starts here) - | ------ borrow of `i` occurs here + | ------ `i` is borrowed here ... LL | /*4*/ let k = i; | ^ use of borrowed `i` diff --git a/tests/ui/borrowck/two-phase-surprise-no-conflict.stderr b/tests/ui/borrowck/two-phase-surprise-no-conflict.stderr index 5a240d90011..e75094d4f13 100644 --- a/tests/ui/borrowck/two-phase-surprise-no-conflict.stderr +++ b/tests/ui/borrowck/two-phase-surprise-no-conflict.stderr @@ -2,7 +2,7 @@ error[E0503]: cannot use `self.cx` because it was mutably borrowed --> $DIR/two-phase-surprise-no-conflict.rs:21:23 | LL | let _mut_borrow = &mut *self; - | ---------- borrow of `*self` occurs here + | ---------- `*self` is borrowed here LL | let _access = self.cx; | ^^^^^^^ use of borrowed `*self` LL | diff --git a/tests/ui/box/leak-alloc.stderr b/tests/ui/box/leak-alloc.stderr index e8a6ad0995a..5140b58934a 100644 --- a/tests/ui/box/leak-alloc.stderr +++ b/tests/ui/box/leak-alloc.stderr @@ -1,6 +1,8 @@ error[E0505]: cannot move out of `alloc` because it is borrowed --> $DIR/leak-alloc.rs:26:10 | +LL | let alloc = Alloc {}; + | ----- binding `alloc` declared here LL | let boxed = Box::new_in(10, alloc.by_ref()); | -------------- borrow of `alloc` occurs here LL | let theref = Box::leak(boxed); diff --git a/tests/ui/btreemap/btreemap_dropck.stderr b/tests/ui/btreemap/btreemap_dropck.stderr index e953e7ae82b..d405e465aae 100644 --- a/tests/ui/btreemap/btreemap_dropck.stderr +++ b/tests/ui/btreemap/btreemap_dropck.stderr @@ -1,6 +1,8 @@ error[E0505]: cannot move out of `s` because it is borrowed --> $DIR/btreemap_dropck.rs:15:10 | +LL | let s = String::from("Hello World!"); + | - binding `s` declared here LL | let _map = BTreeMap::from_iter([((), PrintOnDrop(&s))]); | -- borrow of `s` occurs here LL | drop(s); diff --git a/tests/ui/c-variadic/variadic-ffi-4.stderr b/tests/ui/c-variadic/variadic-ffi-4.stderr index 6f8e53298ac..c9d90d73dea 100644 --- a/tests/ui/c-variadic/variadic-ffi-4.stderr +++ b/tests/ui/c-variadic/variadic-ffi-4.stderr @@ -107,7 +107,9 @@ error[E0597]: `ap1` does not live long enough --> $DIR/variadic-ffi-4.rs:28:11 | LL | pub unsafe extern "C" fn no_escape4(_: usize, mut ap0: &mut VaListImpl, mut ap1: ...) { - | - let's call the lifetime of this reference `'3` + | - ------- binding `ap1` declared here + | | + | let's call the lifetime of this reference `'3` LL | ap0 = &mut ap1; | ------^^^^^^^^ | | | diff --git a/tests/ui/chalkify/bugs/async.rs b/tests/ui/chalkify/bugs/async.rs index 1c69b07e3d4..3169e4781ee 100644 --- a/tests/ui/chalkify/bugs/async.rs +++ b/tests/ui/chalkify/bugs/async.rs @@ -1,7 +1,7 @@ -// check-fail -// known-bug +// edition:2021 +// known-bug: unknown // unset-rustc-env:RUST_BACKTRACE -// compile-flags:-Z trait-solver=chalk --edition=2021 +// compile-flags:-Z trait-solver=chalk // error-pattern:internal compiler error // failure-status:101 // normalize-stderr-test "DefId([^)]*)" -> "..." diff --git a/tests/ui/closures/2229_closure_analysis/diagnostics/arrays.stderr b/tests/ui/closures/2229_closure_analysis/diagnostics/arrays.stderr index 4f41060dc98..9e5200ef34b 100644 --- a/tests/ui/closures/2229_closure_analysis/diagnostics/arrays.stderr +++ b/tests/ui/closures/2229_closure_analysis/diagnostics/arrays.stderr @@ -2,7 +2,7 @@ error[E0503]: cannot use `arr` because it was mutably borrowed --> $DIR/arrays.rs:14:5 | LL | let mut c = || { - | -- borrow of `arr` occurs here + | -- `arr` is borrowed here LL | arr[0] += 10; | --- borrow occurs due to use of `arr` in closure ... @@ -16,7 +16,7 @@ error[E0503]: cannot use `arr[_]` because it was mutably borrowed --> $DIR/arrays.rs:14:5 | LL | let mut c = || { - | -- borrow of `arr` occurs here + | -- `arr` is borrowed here LL | arr[0] += 10; | --- borrow occurs due to use of `arr` in closure ... @@ -30,12 +30,12 @@ error[E0506]: cannot assign to `arr[_]` because it is borrowed --> $DIR/arrays.rs:29:5 | LL | let c = || { - | -- borrow of `arr[_]` occurs here + | -- `arr[_]` is borrowed here LL | println!("{:#?}", &arr[3..4]); | --- borrow occurs due to use in closure ... LL | arr[1] += 10; - | ^^^^^^^^^^^^ assignment to borrowed `arr[_]` occurs here + | ^^^^^^^^^^^^ `arr[_]` is assigned to here but it was already borrowed LL | LL | c(); | - borrow later used here @@ -44,12 +44,12 @@ error[E0506]: cannot assign to `arr[_]` because it is borrowed --> $DIR/arrays.rs:43:5 | LL | let c = || { - | -- borrow of `arr[_]` occurs here + | -- `arr[_]` is borrowed here LL | println!("{}", arr[3]); | --- borrow occurs due to use in closure ... LL | arr[1] += 10; - | ^^^^^^^^^^^^ assignment to borrowed `arr[_]` occurs here + | ^^^^^^^^^^^^ `arr[_]` is assigned to here but it was already borrowed LL | LL | c(); | - borrow later used here @@ -58,7 +58,7 @@ error[E0503]: cannot use `arr` because it was mutably borrowed --> $DIR/arrays.rs:57:20 | LL | let mut c = || { - | -- borrow of `arr` occurs here + | -- `arr` is borrowed here LL | arr[1] += 10; | --- borrow occurs due to use of `arr` in closure ... diff --git a/tests/ui/closures/2229_closure_analysis/diagnostics/box.stderr b/tests/ui/closures/2229_closure_analysis/diagnostics/box.stderr index f8b17875235..2e3259e6405 100644 --- a/tests/ui/closures/2229_closure_analysis/diagnostics/box.stderr +++ b/tests/ui/closures/2229_closure_analysis/diagnostics/box.stderr @@ -2,12 +2,12 @@ error[E0506]: cannot assign to `e.0.0.m.x` because it is borrowed --> $DIR/box.rs:21:5 | LL | let mut c = || { - | -- borrow of `e.0.0.m.x` occurs here + | -- `e.0.0.m.x` is borrowed here LL | e.0.0.m.x = format!("not-x"); | --------- borrow occurs due to use in closure ... LL | e.0.0.m.x = format!("not-x"); - | ^^^^^^^^^ assignment to borrowed `e.0.0.m.x` occurs here + | ^^^^^^^^^ `e.0.0.m.x` is assigned to here but it was already borrowed LL | LL | c(); | - borrow later used here @@ -32,12 +32,12 @@ error[E0506]: cannot assign to `e.0.0.m.x` because it is borrowed --> $DIR/box.rs:55:5 | LL | let c = || { - | -- borrow of `e.0.0.m.x` occurs here + | -- `e.0.0.m.x` is borrowed here LL | println!("{}", e.0.0.m.x); | --------- borrow occurs due to use in closure ... LL | e.0.0.m.x = format!("not-x"); - | ^^^^^^^^^ assignment to borrowed `e.0.0.m.x` occurs here + | ^^^^^^^^^ `e.0.0.m.x` is assigned to here but it was already borrowed LL | LL | c(); | - borrow later used here diff --git a/tests/ui/closures/2229_closure_analysis/diagnostics/union.rs b/tests/ui/closures/2229_closure_analysis/diagnostics/union.rs index 46b54846e32..695337ea82c 100644 --- a/tests/ui/closures/2229_closure_analysis/diagnostics/union.rs +++ b/tests/ui/closures/2229_closure_analysis/diagnostics/union.rs @@ -11,7 +11,7 @@ union A { fn main() { let mut a = A { y: 1 }; let mut c = || { - //~^ borrow of `a.y` occurs here + //~^ `a.y` is borrowed here let _ = unsafe { &a.y }; let _ = &mut a; //~^ borrow occurs due to use in closure @@ -19,7 +19,7 @@ fn main() { }; a.y = 1; //~^ cannot assign to `a.y` because it is borrowed [E0506] - //~| assignment to borrowed `a.y` occurs here + //~| `a.y` is assigned to here c(); //~^ borrow later used here } diff --git a/tests/ui/closures/2229_closure_analysis/diagnostics/union.stderr b/tests/ui/closures/2229_closure_analysis/diagnostics/union.stderr index 7c34e2336c8..17834e61236 100644 --- a/tests/ui/closures/2229_closure_analysis/diagnostics/union.stderr +++ b/tests/ui/closures/2229_closure_analysis/diagnostics/union.stderr @@ -2,13 +2,13 @@ error[E0506]: cannot assign to `a.y` because it is borrowed --> $DIR/union.rs:20:5 | LL | let mut c = || { - | -- borrow of `a.y` occurs here + | -- `a.y` is borrowed here ... LL | let _ = &mut a; | - borrow occurs due to use in closure ... LL | a.y = 1; - | ^^^^^^^ assignment to borrowed `a.y` occurs here + | ^^^^^^^ `a.y` is assigned to here but it was already borrowed ... LL | c(); | - borrow later used here diff --git a/tests/ui/closures/multiple-fn-bounds.stderr b/tests/ui/closures/multiple-fn-bounds.stderr index da26302c9d8..32a1edb0024 100644 --- a/tests/ui/closures/multiple-fn-bounds.stderr +++ b/tests/ui/closures/multiple-fn-bounds.stderr @@ -2,10 +2,8 @@ error[E0631]: type mismatch in closure arguments --> $DIR/multiple-fn-bounds.rs:10:5 | LL | foo(move |x| v); - | ^^^ -------- - | | | | - | | | help: do not borrow the argument: `char` - | | found signature defined here + | ^^^ -------- found signature defined here + | | | expected due to this | = note: expected closure signature `fn(char) -> _` @@ -20,6 +18,10 @@ note: required by a bound in `foo` | LL | fn foo<F: Fn(&char) -> bool + Fn(char) -> bool>(f: F) { | ^^^^^^^^^^^^^^^^ required by this bound in `foo` +help: do not borrow the argument + | +LL | foo(move |char| v); + | ~~~~ error: aborting due to previous error diff --git a/tests/ui/coercion/coerce-overloaded-autoderef-fail.stderr b/tests/ui/coercion/coerce-overloaded-autoderef-fail.stderr index d067c3b3a18..d412b8b08b7 100644 --- a/tests/ui/coercion/coerce-overloaded-autoderef-fail.stderr +++ b/tests/ui/coercion/coerce-overloaded-autoderef-fail.stderr @@ -13,10 +13,10 @@ error[E0506]: cannot assign to `**x` because it is borrowed --> $DIR/coerce-overloaded-autoderef-fail.rs:17:5 | LL | let y = borrow(x); - | - borrow of `**x` occurs here + | - `**x` is borrowed here LL | let z = borrow(x); LL | **x += 1; - | ^^^^^^^^ assignment to borrowed `**x` occurs here + | ^^^^^^^^ `**x` is assigned to here but it was already borrowed LL | LL | drop((y, z)); | - borrow later used here diff --git a/tests/ui/coherence/coherence-with-generator.rs b/tests/ui/coherence/coherence-with-generator.rs index 70665ba06f9..5eb8dc2a468 100644 --- a/tests/ui/coherence/coherence-with-generator.rs +++ b/tests/ui/coherence/coherence-with-generator.rs @@ -1,5 +1,11 @@ // Test that encountering closures during coherence does not cause issues. #![feature(type_alias_impl_trait, generators)] +#![cfg_attr(specialized, feature(specialization))] +#![allow(incomplete_features)] + +// revisions: stock specialized +// [specialized]check-pass + type OpaqueGenerator = impl Sized; fn defining_use() -> OpaqueGenerator { || { @@ -13,6 +19,6 @@ struct Wrapper<T>(T); trait Trait {} impl Trait for Wrapper<OpaqueGenerator> {} impl<T: Sync> Trait for Wrapper<T> {} -//~^ ERROR conflicting implementations of trait `Trait` for type `Wrapper<OpaqueGenerator>` +//[stock]~^ ERROR conflicting implementations of trait `Trait` for type `Wrapper<OpaqueGenerator>` fn main() {} diff --git a/tests/ui/coherence/coherence-with-generator.stderr b/tests/ui/coherence/coherence-with-generator.stock.stderr index 6d3be2e16c6..478ac491264 100644 --- a/tests/ui/coherence/coherence-with-generator.stderr +++ b/tests/ui/coherence/coherence-with-generator.stock.stderr @@ -1,5 +1,5 @@ error[E0119]: conflicting implementations of trait `Trait` for type `Wrapper<OpaqueGenerator>` - --> $DIR/coherence-with-generator.rs:15:1 + --> $DIR/coherence-with-generator.rs:21:1 | LL | impl Trait for Wrapper<OpaqueGenerator> {} | --------------------------------------- first implementation here diff --git a/tests/ui/const-generics/issue-106419-struct-with-multiple-const-params.rs b/tests/ui/const-generics/issue-106419-struct-with-multiple-const-params.rs new file mode 100644 index 00000000000..8363e5af4b6 --- /dev/null +++ b/tests/ui/const-generics/issue-106419-struct-with-multiple-const-params.rs @@ -0,0 +1,12 @@ +// check-pass +#![feature(generic_const_exprs)] +#![allow(incomplete_features)] + +#[derive(Clone)] +struct Bar<const A: usize, const B: usize> +where + [(); A as usize]:, + [(); B as usize]:, +{} + +fn main() {} diff --git a/tests/ui/const-generics/issues/issue-85031-2.rs b/tests/ui/const-generics/issues/issue-85031-2.rs index 4908fb29692..50dd66da6db 100644 --- a/tests/ui/const-generics/issues/issue-85031-2.rs +++ b/tests/ui/const-generics/issues/issue-85031-2.rs @@ -1,5 +1,5 @@ // check-pass -// known-bug +// known-bug: unknown // This should not compile, as the compiler should not know // `A - 0` is satisfied `?x - 0` if `?x` is inferred to `A`. @@ -10,7 +10,6 @@ pub struct Ref<'a>(&'a i32); impl<'a> Ref<'a> { pub fn foo<const A: usize>() -> [(); A - 0] { - //~^ WARN function cannot Self::foo() } } diff --git a/tests/ui/const-generics/issues/issue-85031-2.stderr b/tests/ui/const-generics/issues/issue-85031-2.stderr index fc690576875..896e1c7ea8d 100644 --- a/tests/ui/const-generics/issues/issue-85031-2.stderr +++ b/tests/ui/const-generics/issues/issue-85031-2.stderr @@ -3,7 +3,6 @@ warning: function cannot return without recursing | LL | pub fn foo<const A: usize>() -> [(); A - 0] { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing -LL | LL | Self::foo() | ----------- recursive call site | diff --git a/tests/ui/consts/promote_const_let.stderr b/tests/ui/consts/promote_const_let.stderr index 975a235a649..6e0349a4773 100644 --- a/tests/ui/consts/promote_const_let.stderr +++ b/tests/ui/consts/promote_const_let.stderr @@ -4,6 +4,7 @@ error[E0597]: `y` does not live long enough LL | let x: &'static u32 = { | ------------ type annotation requires that `y` is borrowed for `'static` LL | let y = 42; + | - binding `y` declared here LL | &y | ^^ borrowed value does not live long enough LL | }; diff --git a/tests/ui/deriving/deriving-all-codegen.stdout b/tests/ui/deriving/deriving-all-codegen.stdout index a63cbd4ca7e..e6ee11a783b 100644 --- a/tests/ui/deriving/deriving-all-codegen.stdout +++ b/tests/ui/deriving/deriving-all-codegen.stdout @@ -731,11 +731,12 @@ impl ::core::marker::Copy for Fieldless { } #[automatically_derived] impl ::core::fmt::Debug for Fieldless { fn fmt(&self, f: &mut ::core::fmt::Formatter) -> ::core::fmt::Result { - match self { - Fieldless::A => ::core::fmt::Formatter::write_str(f, "A"), - Fieldless::B => ::core::fmt::Formatter::write_str(f, "B"), - Fieldless::C => ::core::fmt::Formatter::write_str(f, "C"), - } + ::core::fmt::Formatter::write_str(f, + match self { + Fieldless::A => "A", + Fieldless::B => "B", + Fieldless::C => "C", + }) } } #[automatically_derived] diff --git a/tests/ui/dropck/drop-with-active-borrows-1.stderr b/tests/ui/dropck/drop-with-active-borrows-1.stderr index 8d6a7f3721f..4585b22974c 100644 --- a/tests/ui/dropck/drop-with-active-borrows-1.stderr +++ b/tests/ui/dropck/drop-with-active-borrows-1.stderr @@ -1,6 +1,8 @@ error[E0505]: cannot move out of `a` because it is borrowed --> $DIR/drop-with-active-borrows-1.rs:4:10 | +LL | let a = "".to_string(); + | - binding `a` declared here LL | let b: Vec<&str> = a.lines().collect(); | --------- borrow of `a` occurs here LL | drop(a); diff --git a/tests/ui/dropck/dropck-eyepatch-extern-crate.stderr b/tests/ui/dropck/dropck-eyepatch-extern-crate.stderr index 5d53405579d..23d57634e8f 100644 --- a/tests/ui/dropck/dropck-eyepatch-extern-crate.stderr +++ b/tests/ui/dropck/dropck-eyepatch-extern-crate.stderr @@ -1,6 +1,9 @@ error[E0597]: `c_shortest` does not live long enough --> $DIR/dropck-eyepatch-extern-crate.rs:46:23 | +LL | let (mut dt, mut dr, c_shortest): (Dt<_>, Dr<_>, Cell<_>); + | ---------- binding `c_shortest` declared here +... LL | dt = Dt("dt", &c_shortest); | ^^^^^^^^^^^ borrowed value does not live long enough ... @@ -15,6 +18,9 @@ LL | } error[E0597]: `c_shortest` does not live long enough --> $DIR/dropck-eyepatch-extern-crate.rs:68:32 | +LL | let (mut pt, mut pr, c_shortest): (Pt<_, _>, Pr<_>, Cell<_>); + | ---------- binding `c_shortest` declared here +... LL | pt = Pt("pt", &c_long, &c_shortest); | ^^^^^^^^^^^ borrowed value does not live long enough ... diff --git a/tests/ui/dropck/dropck-eyepatch-reorder.stderr b/tests/ui/dropck/dropck-eyepatch-reorder.stderr index 5055cdd8b2b..a5d5136b5c5 100644 --- a/tests/ui/dropck/dropck-eyepatch-reorder.stderr +++ b/tests/ui/dropck/dropck-eyepatch-reorder.stderr @@ -1,6 +1,9 @@ error[E0597]: `c_shortest` does not live long enough --> $DIR/dropck-eyepatch-reorder.rs:64:23 | +LL | let (mut dt, mut dr, c_shortest): (Dt<_>, Dr<_>, Cell<_>); + | ---------- binding `c_shortest` declared here +... LL | dt = Dt("dt", &c_shortest); | ^^^^^^^^^^^ borrowed value does not live long enough ... @@ -15,6 +18,9 @@ LL | } error[E0597]: `c_shortest` does not live long enough --> $DIR/dropck-eyepatch-reorder.rs:86:32 | +LL | let (mut pt, mut pr, c_shortest): (Pt<_, _>, Pr<_>, Cell<_>); + | ---------- binding `c_shortest` declared here +... LL | pt = Pt("pt", &c_long, &c_shortest); | ^^^^^^^^^^^ borrowed value does not live long enough ... diff --git a/tests/ui/dropck/dropck-eyepatch.stderr b/tests/ui/dropck/dropck-eyepatch.stderr index 21295e6c601..dc3f8c05e73 100644 --- a/tests/ui/dropck/dropck-eyepatch.stderr +++ b/tests/ui/dropck/dropck-eyepatch.stderr @@ -1,6 +1,9 @@ error[E0597]: `c_shortest` does not live long enough --> $DIR/dropck-eyepatch.rs:88:23 | +LL | let (mut dt, mut dr, c_shortest): (Dt<_>, Dr<_>, Cell<_>); + | ---------- binding `c_shortest` declared here +... LL | dt = Dt("dt", &c_shortest); | ^^^^^^^^^^^ borrowed value does not live long enough ... @@ -15,6 +18,9 @@ LL | } error[E0597]: `c_shortest` does not live long enough --> $DIR/dropck-eyepatch.rs:110:32 | +LL | let (mut pt, mut pr, c_shortest): (Pt<_, _>, Pr<_>, Cell<_>); + | ---------- binding `c_shortest` declared here +... LL | pt = Pt("pt", &c_long, &c_shortest); | ^^^^^^^^^^^ borrowed value does not live long enough ... diff --git a/tests/ui/dropck/dropck-union.stderr b/tests/ui/dropck/dropck-union.stderr index 854e29385a8..7d48e9fdcee 100644 --- a/tests/ui/dropck/dropck-union.stderr +++ b/tests/ui/dropck/dropck-union.stderr @@ -1,6 +1,8 @@ error[E0597]: `v` does not live long enough --> $DIR/dropck-union.rs:37:18 | +LL | let v : Wrap<C> = Wrap::new(C(Cell::new(None))); + | - binding `v` declared here LL | v.0.set(Some(&v)); | ^^ borrowed value does not live long enough LL | } diff --git a/tests/ui/dropck/dropck_trait_cycle_checked.stderr b/tests/ui/dropck/dropck_trait_cycle_checked.stderr index dc3fbed593b..4d4f7b9df11 100644 --- a/tests/ui/dropck/dropck_trait_cycle_checked.stderr +++ b/tests/ui/dropck/dropck_trait_cycle_checked.stderr @@ -2,7 +2,7 @@ error[E0597]: `o2` does not live long enough --> $DIR/dropck_trait_cycle_checked.rs:111:13 | LL | let (o1, o2, o3): (Box<dyn Obj>, Box<dyn Obj>, Box<dyn Obj>) = (O::new(), O::new(), O::new()); - | -------- cast requires that `o2` is borrowed for `'static` + | -- binding `o2` declared here -------- cast requires that `o2` is borrowed for `'static` LL | o1.set0(&o2); | ^^^ borrowed value does not live long enough ... @@ -13,7 +13,7 @@ error[E0597]: `o3` does not live long enough --> $DIR/dropck_trait_cycle_checked.rs:112:13 | LL | let (o1, o2, o3): (Box<dyn Obj>, Box<dyn Obj>, Box<dyn Obj>) = (O::new(), O::new(), O::new()); - | -------- cast requires that `o3` is borrowed for `'static` + | -- binding `o3` declared here -------- cast requires that `o3` is borrowed for `'static` LL | o1.set0(&o2); LL | o1.set1(&o3); | ^^^ borrowed value does not live long enough @@ -25,7 +25,7 @@ error[E0597]: `o2` does not live long enough --> $DIR/dropck_trait_cycle_checked.rs:113:13 | LL | let (o1, o2, o3): (Box<dyn Obj>, Box<dyn Obj>, Box<dyn Obj>) = (O::new(), O::new(), O::new()); - | -------- cast requires that `o2` is borrowed for `'static` + | -- binding `o2` declared here -------- cast requires that `o2` is borrowed for `'static` ... LL | o2.set0(&o2); | ^^^ borrowed value does not live long enough @@ -37,7 +37,7 @@ error[E0597]: `o3` does not live long enough --> $DIR/dropck_trait_cycle_checked.rs:114:13 | LL | let (o1, o2, o3): (Box<dyn Obj>, Box<dyn Obj>, Box<dyn Obj>) = (O::new(), O::new(), O::new()); - | -------- cast requires that `o3` is borrowed for `'static` + | -- binding `o3` declared here -------- cast requires that `o3` is borrowed for `'static` ... LL | o2.set1(&o3); | ^^^ borrowed value does not live long enough @@ -49,7 +49,7 @@ error[E0597]: `o1` does not live long enough --> $DIR/dropck_trait_cycle_checked.rs:115:13 | LL | let (o1, o2, o3): (Box<dyn Obj>, Box<dyn Obj>, Box<dyn Obj>) = (O::new(), O::new(), O::new()); - | -------- cast requires that `o1` is borrowed for `'static` + | -- binding `o1` declared here -------- cast requires that `o1` is borrowed for `'static` ... LL | o3.set0(&o1); | ^^^ borrowed value does not live long enough @@ -61,7 +61,7 @@ error[E0597]: `o2` does not live long enough --> $DIR/dropck_trait_cycle_checked.rs:116:13 | LL | let (o1, o2, o3): (Box<dyn Obj>, Box<dyn Obj>, Box<dyn Obj>) = (O::new(), O::new(), O::new()); - | -------- cast requires that `o2` is borrowed for `'static` + | -- binding `o2` declared here -------- cast requires that `o2` is borrowed for `'static` ... LL | o3.set1(&o2); | ^^^ borrowed value does not live long enough diff --git a/tests/ui/dst/dst-bad-coerce3.stderr b/tests/ui/dst/dst-bad-coerce3.stderr index 957e98bbeee..1254250bcbd 100644 --- a/tests/ui/dst/dst-bad-coerce3.stderr +++ b/tests/ui/dst/dst-bad-coerce3.stderr @@ -3,7 +3,9 @@ error[E0597]: `f1` does not live long enough | LL | fn baz<'a>() { | -- lifetime `'a` defined here -... +LL | // With a vec of ints. +LL | let f1 = Fat { ptr: [1, 2, 3] }; + | -- binding `f1` declared here LL | let f2: &Fat<[isize; 3]> = &f1; | ^^^ borrowed value does not live long enough LL | let f3: &'a Fat<[isize]> = f2; @@ -18,6 +20,8 @@ error[E0597]: `f1` does not live long enough LL | fn baz<'a>() { | -- lifetime `'a` defined here ... +LL | let f1 = Fat { ptr: Foo }; + | -- binding `f1` declared here LL | let f2: &Fat<Foo> = &f1; | ^^^ borrowed value does not live long enough LL | let f3: &'a Fat<dyn Bar> = f2; @@ -32,6 +36,8 @@ error[E0597]: `f1` does not live long enough LL | fn baz<'a>() { | -- lifetime `'a` defined here ... +LL | let f1 = ([1, 2, 3],); + | -- binding `f1` declared here LL | let f2: &([isize; 3],) = &f1; | ^^^ borrowed value does not live long enough LL | let f3: &'a ([isize],) = f2; @@ -46,6 +52,8 @@ error[E0597]: `f1` does not live long enough LL | fn baz<'a>() { | -- lifetime `'a` defined here ... +LL | let f1 = (Foo,); + | -- binding `f1` declared here LL | let f2: &(Foo,) = &f1; | ^^^ borrowed value does not live long enough LL | let f3: &'a (dyn Bar,) = f2; diff --git a/tests/ui/error-codes/E0503.stderr b/tests/ui/error-codes/E0503.stderr index fafe363eb47..2f02e3b1a61 100644 --- a/tests/ui/error-codes/E0503.stderr +++ b/tests/ui/error-codes/E0503.stderr @@ -2,7 +2,7 @@ error[E0503]: cannot use `value` because it was mutably borrowed --> $DIR/E0503.rs:4:16 | LL | let _borrow = &mut value; - | ---------- borrow of `value` occurs here + | ---------- `value` is borrowed here LL | let _sum = value + 1; | ^^^^^ use of borrowed `value` LL | _borrow.use_mut(); diff --git a/tests/ui/error-codes/E0504.stderr b/tests/ui/error-codes/E0504.stderr index e677e891615..20e16a53810 100644 --- a/tests/ui/error-codes/E0504.stderr +++ b/tests/ui/error-codes/E0504.stderr @@ -1,6 +1,8 @@ error[E0505]: cannot move out of `fancy_num` because it is borrowed --> $DIR/E0504.rs:9:13 | +LL | let fancy_num = FancyNum { num: 5 }; + | --------- binding `fancy_num` declared here LL | let fancy_ref = &fancy_num; | ---------- borrow of `fancy_num` occurs here LL | diff --git a/tests/ui/error-codes/E0505.stderr b/tests/ui/error-codes/E0505.stderr index bd3f37f54e0..2ecb4a75c43 100644 --- a/tests/ui/error-codes/E0505.stderr +++ b/tests/ui/error-codes/E0505.stderr @@ -1,6 +1,9 @@ error[E0505]: cannot move out of `x` because it is borrowed --> $DIR/E0505.rs:9:13 | +LL | let x = Value{}; + | - binding `x` declared here +LL | { LL | let _ref_to_val: &Value = &x; | -- borrow of `x` occurs here LL | eat(x); diff --git a/tests/ui/error-codes/E0506.stderr b/tests/ui/error-codes/E0506.stderr index d70406b750a..17ad7c611f8 100644 --- a/tests/ui/error-codes/E0506.stderr +++ b/tests/ui/error-codes/E0506.stderr @@ -2,9 +2,9 @@ error[E0506]: cannot assign to `fancy_num` because it is borrowed --> $DIR/E0506.rs:8:5 | LL | let fancy_ref = &fancy_num; - | ---------- borrow of `fancy_num` occurs here + | ---------- `fancy_num` is borrowed here LL | fancy_num = FancyNum { num: 6 }; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `fancy_num` occurs here + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `fancy_num` is assigned to here but it was already borrowed LL | LL | println!("Num: {}, Ref: {}", fancy_num.num, fancy_ref.num); | ------------- borrow later used here diff --git a/tests/ui/error-codes/E0597.stderr b/tests/ui/error-codes/E0597.stderr index b4a1180ad54..82e3481b65a 100644 --- a/tests/ui/error-codes/E0597.stderr +++ b/tests/ui/error-codes/E0597.stderr @@ -1,6 +1,8 @@ error[E0597]: `y` does not live long enough --> $DIR/E0597.rs:8:16 | +LL | let y = 0; + | - binding `y` declared here LL | x.x = Some(&y); | ^^ borrowed value does not live long enough LL | diff --git a/tests/ui/error-codes/E0789.rs b/tests/ui/error-codes/E0789.rs new file mode 100644 index 00000000000..c0cbbcc9d2d --- /dev/null +++ b/tests/ui/error-codes/E0789.rs @@ -0,0 +1,12 @@ +// compile-flags: --crate-type lib + +#![feature(rustc_attrs)] +#![feature(staged_api)] +#![unstable(feature = "foo_module", reason = "...", issue = "123")] + +#[rustc_allowed_through_unstable_modules] +// #[stable(feature = "foo", since = "1.0")] +struct Foo; +//~^ ERROR `rustc_allowed_through_unstable_modules` attribute must be paired with a `stable` attribute +//~^^ ERROR `rustc_allowed_through_unstable_modules` attribute must be paired with a `stable` attribute +// FIXME: we shouldn't have two errors here, only occurs when using `-Zdeduplicate-diagnostics=no` diff --git a/tests/ui/error-codes/E0789.stderr b/tests/ui/error-codes/E0789.stderr new file mode 100644 index 00000000000..faab92bae03 --- /dev/null +++ b/tests/ui/error-codes/E0789.stderr @@ -0,0 +1,15 @@ +error[E0789]: `rustc_allowed_through_unstable_modules` attribute must be paired with a `stable` attribute + --> $DIR/E0789.rs:9:1 + | +LL | struct Foo; + | ^^^^^^^^^^^ + +error[E0789]: `rustc_allowed_through_unstable_modules` attribute must be paired with a `stable` attribute + --> $DIR/E0789.rs:9:1 + | +LL | struct Foo; + | ^^^^^^^^^^^ + +error: aborting due to 2 previous errors + +For more information about this error, try `rustc --explain E0789`. diff --git a/tests/ui/errors/auxiliary/remapped_dep.rs b/tests/ui/errors/auxiliary/remapped_dep.rs index ef26f1cd883..f9bb7bf8987 100644 --- a/tests/ui/errors/auxiliary/remapped_dep.rs +++ b/tests/ui/errors/auxiliary/remapped_dep.rs @@ -1,3 +1,4 @@ // compile-flags: --remap-path-prefix={{src-base}}/errors/auxiliary=remapped-aux +// no-remap-src-base: Manually remap, so the remapped path remains in .stderr file. pub struct SomeStruct {} // This line should be show as part of the error. diff --git a/tests/ui/errors/remap-path-prefix-reverse.local-self.stderr b/tests/ui/errors/remap-path-prefix-reverse.local-self.stderr index 2584e3e88a6..51e3b776cb2 100644 --- a/tests/ui/errors/remap-path-prefix-reverse.local-self.stderr +++ b/tests/ui/errors/remap-path-prefix-reverse.local-self.stderr @@ -1,10 +1,10 @@ error[E0423]: expected value, found struct `remapped_dep::SomeStruct` - --> $DIR/remap-path-prefix-reverse.rs:22:13 + --> $DIR/remap-path-prefix-reverse.rs:16:13 | -LL | let _ = remapped_dep::SomeStruct; +LL | let _ = remapped_dep::SomeStruct; // ~ERROR E0423 | ^^^^^^^^^^^^^^^^^^^^^^^^ help: use struct literal syntax instead: `remapped_dep::SomeStruct {}` | - ::: remapped-aux/remapped_dep.rs:3:1 + ::: remapped-aux/remapped_dep.rs:4:1 | LL | pub struct SomeStruct {} // This line should be show as part of the error. | --------------------- `remapped_dep::SomeStruct` defined here diff --git a/tests/ui/errors/remap-path-prefix-reverse.remapped-self.stderr b/tests/ui/errors/remap-path-prefix-reverse.remapped-self.stderr index e710183322a..51e3b776cb2 100644 --- a/tests/ui/errors/remap-path-prefix-reverse.remapped-self.stderr +++ b/tests/ui/errors/remap-path-prefix-reverse.remapped-self.stderr @@ -1,10 +1,10 @@ error[E0423]: expected value, found struct `remapped_dep::SomeStruct` - --> remapped/errors/remap-path-prefix-reverse.rs:22:13 + --> $DIR/remap-path-prefix-reverse.rs:16:13 | -LL | let _ = remapped_dep::SomeStruct; +LL | let _ = remapped_dep::SomeStruct; // ~ERROR E0423 | ^^^^^^^^^^^^^^^^^^^^^^^^ help: use struct literal syntax instead: `remapped_dep::SomeStruct {}` | - ::: remapped-aux/remapped_dep.rs:3:1 + ::: remapped-aux/remapped_dep.rs:4:1 | LL | pub struct SomeStruct {} // This line should be show as part of the error. | --------------------- `remapped_dep::SomeStruct` defined here diff --git a/tests/ui/errors/remap-path-prefix-reverse.rs b/tests/ui/errors/remap-path-prefix-reverse.rs index 635c4164e0f..71c80063c32 100644 --- a/tests/ui/errors/remap-path-prefix-reverse.rs +++ b/tests/ui/errors/remap-path-prefix-reverse.rs @@ -1,15 +1,9 @@ // aux-build:remapped_dep.rs // compile-flags: --remap-path-prefix={{src-base}}/errors/auxiliary=remapped-aux -// The remapped paths are not normalized by compiletest. -// normalize-stderr-test: "\\(errors)" -> "/$1" - // revisions: local-self remapped-self -// [remapped-self]compile-flags: --remap-path-prefix={{src-base}}=remapped - -// The paths from `remapped-self` aren't recognized by compiletest, so we -// cannot use line-specific patterns for the actual error. -// error-pattern: E0423 +// [local-self] no-remap-src-base: The hack should work regardless of remapping. +// [remapped-self] remap-src-base // Verify that the expected source code is shown. // error-pattern: pub struct SomeStruct {} // This line should be show @@ -19,5 +13,5 @@ extern crate remapped_dep; fn main() { // The actual error is irrelevant. The important part it that is should show // a snippet of the dependency's source. - let _ = remapped_dep::SomeStruct; + let _ = remapped_dep::SomeStruct; // ~ERROR E0423 } diff --git a/tests/ui/errors/remap-path-prefix.rs b/tests/ui/errors/remap-path-prefix.rs index 29b9c7be301..393b8e22f1c 100644 --- a/tests/ui/errors/remap-path-prefix.rs +++ b/tests/ui/errors/remap-path-prefix.rs @@ -1,4 +1,5 @@ // compile-flags: --remap-path-prefix={{src-base}}=remapped +// no-remap-src-base: Manually remap, so the remapped path remains in .stderr file. // The remapped paths are not normalized by compiletest. // normalize-stderr-test: "\\(errors)" -> "/$1" diff --git a/tests/ui/errors/remap-path-prefix.stderr b/tests/ui/errors/remap-path-prefix.stderr index 2f421283e69..62dbd4b8881 100644 --- a/tests/ui/errors/remap-path-prefix.stderr +++ b/tests/ui/errors/remap-path-prefix.stderr @@ -1,5 +1,5 @@ error[E0425]: cannot find value `ferris` in this scope - --> remapped/errors/remap-path-prefix.rs:15:5 + --> remapped/errors/remap-path-prefix.rs:16:5 | LL | ferris | ^^^^^^ not found in this scope diff --git a/tests/ui/fn/fn-compare-mismatch.stderr b/tests/ui/fn/fn-compare-mismatch.stderr index df838cb1181..f247ff6cf3f 100644 --- a/tests/ui/fn/fn-compare-mismatch.stderr +++ b/tests/ui/fn/fn-compare-mismatch.stderr @@ -19,6 +19,7 @@ LL | let x = f == g; | = note: expected fn item `fn() {f}` found fn item `fn() {g}` + = note: different fn items have unique types, even if their signatures are the same error: aborting due to 2 previous errors diff --git a/tests/ui/fn/fn-item-type.rs b/tests/ui/fn/fn-item-type.rs index 1831e6cbf10..b6ebc867d28 100644 --- a/tests/ui/fn/fn-item-type.rs +++ b/tests/ui/fn/fn-item-type.rs @@ -1,13 +1,22 @@ // Test that the types of distinct fn items are not compatible by // default. See also `run-pass/fn-item-type-*.rs`. -fn foo<T>(x: isize) -> isize { x * 2 } -fn bar<T>(x: isize) -> isize { x * 4 } +fn foo<T>(x: isize) -> isize { + x * 2 +} +fn bar<T>(x: isize) -> isize { + x * 4 +} -fn eq<T>(x: T, y: T) { } +fn eq<T>(x: T, y: T) {} -trait Foo { fn foo() { /* this is a default fn */ } } -impl<T> Foo for T { /* `foo` is still default here */ } +trait Foo { + fn foo() { /* this is a default fn */ + } +} +impl<T> Foo for T { + /* `foo` is still default here */ +} fn main() { eq(foo::<u8>, bar::<u8>); @@ -15,39 +24,29 @@ fn main() { //~| expected fn item `fn(_) -> _ {foo::<u8>}` //~| found fn item `fn(_) -> _ {bar::<u8>}` //~| expected fn item, found a different fn item - //~| different `fn` items always have unique types, even if their signatures are the same - //~| change the expected type to be function pointer - //~| if the expected type is due to type inference, cast the expected `fn` to a function pointer + //~| different fn items have unique types, even if their signatures are the same eq(foo::<u8>, foo::<i8>); //~^ ERROR mismatched types //~| expected `u8`, found `i8` - //~| different `fn` items always have unique types, even if their signatures are the same - //~| change the expected type to be function pointer - //~| if the expected type is due to type inference, cast the expected `fn` to a function pointer + //~| different fn items have unique types, even if their signatures are the same eq(bar::<String>, bar::<Vec<u8>>); //~^ ERROR mismatched types //~| found fn item `fn(_) -> _ {bar::<Vec<u8>>}` //~| expected struct `String`, found struct `Vec` - //~| different `fn` items always have unique types, even if their signatures are the same - //~| change the expected type to be function pointer - //~| if the expected type is due to type inference, cast the expected `fn` to a function pointer + //~| different fn items have unique types, even if their signatures are the same // Make sure we distinguish between trait methods correctly. eq(<u8 as Foo>::foo, <u16 as Foo>::foo); //~^ ERROR mismatched types //~| expected `u8`, found `u16` - //~| different `fn` items always have unique types, even if their signatures are the same - //~| change the expected type to be function pointer - //~| if the expected type is due to type inference, cast the expected `fn` to a function pointer + //~| different fn items have unique types, even if their signatures are the same eq(foo::<u8>, bar::<u8> as fn(isize) -> isize); //~^ ERROR mismatched types //~| found fn pointer `fn(_) -> _` //~| expected fn item, found fn pointer - //~| change the expected type to be function pointer - //~| if the expected type is due to type inference, cast the expected `fn` to a function pointer eq(foo::<u8> as fn(isize) -> isize, bar::<u8>); // ok! } diff --git a/tests/ui/fn/fn-item-type.stderr b/tests/ui/fn/fn-item-type.stderr index f03a47d5c2c..cb1b88c7ab8 100644 --- a/tests/ui/fn/fn-item-type.stderr +++ b/tests/ui/fn/fn-item-type.stderr @@ -1,5 +1,5 @@ error[E0308]: mismatched types - --> $DIR/fn-item-type.rs:13:19 + --> $DIR/fn-item-type.rs:22:19 | LL | eq(foo::<u8>, bar::<u8>); | -- ^^^^^^^^^ expected fn item, found a different fn item @@ -8,17 +8,15 @@ LL | eq(foo::<u8>, bar::<u8>); | = note: expected fn item `fn(_) -> _ {foo::<u8>}` found fn item `fn(_) -> _ {bar::<u8>}` - = note: different `fn` items always have unique types, even if their signatures are the same - = help: change the expected type to be function pointer `fn(isize) -> isize` - = help: if the expected type is due to type inference, cast the expected `fn` to a function pointer: `foo::<u8> as fn(isize) -> isize` + = note: different fn items have unique types, even if their signatures are the same note: function defined here - --> $DIR/fn-item-type.rs:7:4 + --> $DIR/fn-item-type.rs:11:4 | -LL | fn eq<T>(x: T, y: T) { } +LL | fn eq<T>(x: T, y: T) {} | ^^ ---- error[E0308]: mismatched types - --> $DIR/fn-item-type.rs:22:19 + --> $DIR/fn-item-type.rs:29:19 | LL | eq(foo::<u8>, foo::<i8>); | -- ^^^^^^^^^ expected `u8`, found `i8` @@ -27,17 +25,15 @@ LL | eq(foo::<u8>, foo::<i8>); | = note: expected fn item `fn(_) -> _ {foo::<u8>}` found fn item `fn(_) -> _ {foo::<i8>}` - = note: different `fn` items always have unique types, even if their signatures are the same - = help: change the expected type to be function pointer `fn(isize) -> isize` - = help: if the expected type is due to type inference, cast the expected `fn` to a function pointer: `foo::<u8> as fn(isize) -> isize` + = note: different fn items have unique types, even if their signatures are the same note: function defined here - --> $DIR/fn-item-type.rs:7:4 + --> $DIR/fn-item-type.rs:11:4 | -LL | fn eq<T>(x: T, y: T) { } +LL | fn eq<T>(x: T, y: T) {} | ^^ ---- error[E0308]: mismatched types - --> $DIR/fn-item-type.rs:29:23 + --> $DIR/fn-item-type.rs:34:23 | LL | eq(bar::<String>, bar::<Vec<u8>>); | -- ^^^^^^^^^^^^^^ expected struct `String`, found struct `Vec` @@ -46,17 +42,15 @@ LL | eq(bar::<String>, bar::<Vec<u8>>); | = note: expected fn item `fn(_) -> _ {bar::<String>}` found fn item `fn(_) -> _ {bar::<Vec<u8>>}` - = note: different `fn` items always have unique types, even if their signatures are the same - = help: change the expected type to be function pointer `fn(isize) -> isize` - = help: if the expected type is due to type inference, cast the expected `fn` to a function pointer: `bar::<String> as fn(isize) -> isize` + = note: different fn items have unique types, even if their signatures are the same note: function defined here - --> $DIR/fn-item-type.rs:7:4 + --> $DIR/fn-item-type.rs:11:4 | -LL | fn eq<T>(x: T, y: T) { } +LL | fn eq<T>(x: T, y: T) {} | ^^ ---- error[E0308]: mismatched types - --> $DIR/fn-item-type.rs:38:26 + --> $DIR/fn-item-type.rs:41:26 | LL | eq(<u8 as Foo>::foo, <u16 as Foo>::foo); | -- ^^^^^^^^^^^^^^^^^ expected `u8`, found `u16` @@ -65,17 +59,15 @@ LL | eq(<u8 as Foo>::foo, <u16 as Foo>::foo); | = note: expected fn item `fn() {<u8 as Foo>::foo}` found fn item `fn() {<u16 as Foo>::foo}` - = note: different `fn` items always have unique types, even if their signatures are the same - = help: change the expected type to be function pointer `fn()` - = help: if the expected type is due to type inference, cast the expected `fn` to a function pointer: `<u8 as Foo>::foo as fn()` + = note: different fn items have unique types, even if their signatures are the same note: function defined here - --> $DIR/fn-item-type.rs:7:4 + --> $DIR/fn-item-type.rs:11:4 | -LL | fn eq<T>(x: T, y: T) { } +LL | fn eq<T>(x: T, y: T) {} | ^^ ---- error[E0308]: mismatched types - --> $DIR/fn-item-type.rs:45:19 + --> $DIR/fn-item-type.rs:46:19 | LL | eq(foo::<u8>, bar::<u8> as fn(isize) -> isize); | -- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected fn item, found fn pointer @@ -84,12 +76,11 @@ LL | eq(foo::<u8>, bar::<u8> as fn(isize) -> isize); | = note: expected fn item `fn(_) -> _ {foo::<u8>}` found fn pointer `fn(_) -> _` - = help: change the expected type to be function pointer `fn(isize) -> isize` - = help: if the expected type is due to type inference, cast the expected `fn` to a function pointer: `foo::<u8> as fn(isize) -> isize` + = note: fn items are distinct from fn pointers note: function defined here - --> $DIR/fn-item-type.rs:7:4 + --> $DIR/fn-item-type.rs:11:4 | -LL | fn eq<T>(x: T, y: T) { } +LL | fn eq<T>(x: T, y: T) {} | ^^ ---- error: aborting due to 5 previous errors diff --git a/tests/ui/fn/fn-pointer-mismatch.rs b/tests/ui/fn/fn-pointer-mismatch.rs new file mode 100644 index 00000000000..0597478cb42 --- /dev/null +++ b/tests/ui/fn/fn-pointer-mismatch.rs @@ -0,0 +1,56 @@ +fn foo(x: u32) -> u32 { + x * 2 +} + +fn bar(x: u32) -> u32 { + x * 3 +} + +// original example from Issue #102608 +fn foobar(n: u32) -> u32 { + let g = if n % 2 == 0 { &foo } else { &bar }; + //~^ ERROR `if` and `else` have incompatible types + //~| different fn items have unique types, even if their signatures are the same + g(n) +} + +fn main() { + assert_eq!(foobar(7), 21); + assert_eq!(foobar(8), 16); + + // general mismatch of fn item types + let mut a = foo; + a = bar; + //~^ ERROR mismatched types + //~| expected fn item `fn(_) -> _ {foo}` + //~| found fn item `fn(_) -> _ {bar}` + //~| different fn items have unique types, even if their signatures are the same + + // display note even when boxed + let mut b = Box::new(foo); + b = Box::new(bar); + //~^ ERROR mismatched types + //~| different fn items have unique types, even if their signatures are the same + + // suggest removing reference + let c: fn(u32) -> u32 = &foo; + //~^ ERROR mismatched types + //~| expected fn pointer `fn(u32) -> u32` + //~| found reference `&fn(u32) -> u32 {foo}` + + // suggest using reference + let d: &fn(u32) -> u32 = foo; + //~^ ERROR mismatched types + //~| expected reference `&fn(u32) -> u32` + //~| found fn item `fn(u32) -> u32 {foo}` + + // suggest casting with reference + let e: &fn(u32) -> u32 = &foo; + //~^ ERROR mismatched types + //~| expected reference `&fn(u32) -> u32` + //~| found reference `&fn(u32) -> u32 {foo}` + + // OK + let mut z: fn(u32) -> u32 = foo as fn(u32) -> u32; + z = bar; +} diff --git a/tests/ui/fn/fn-pointer-mismatch.stderr b/tests/ui/fn/fn-pointer-mismatch.stderr new file mode 100644 index 00000000000..2dc0710e27e --- /dev/null +++ b/tests/ui/fn/fn-pointer-mismatch.stderr @@ -0,0 +1,81 @@ +error[E0308]: `if` and `else` have incompatible types + --> $DIR/fn-pointer-mismatch.rs:11:43 + | +LL | let g = if n % 2 == 0 { &foo } else { &bar }; + | ---- ^^^^ expected fn item, found a different fn item + | | + | expected because of this + | + = note: expected reference `&fn(u32) -> u32 {foo}` + found reference `&fn(u32) -> u32 {bar}` + = note: different fn items have unique types, even if their signatures are the same + +error[E0308]: mismatched types + --> $DIR/fn-pointer-mismatch.rs:23:9 + | +LL | let mut a = foo; + | --- expected due to this value +LL | a = bar; + | ^^^ expected fn item, found a different fn item + | + = note: expected fn item `fn(_) -> _ {foo}` + found fn item `fn(_) -> _ {bar}` + = note: different fn items have unique types, even if their signatures are the same + +error[E0308]: mismatched types + --> $DIR/fn-pointer-mismatch.rs:31:18 + | +LL | b = Box::new(bar); + | -------- ^^^ expected fn item, found a different fn item + | | + | arguments to this function are incorrect + | + = note: expected fn item `fn(_) -> _ {foo}` + found fn item `fn(_) -> _ {bar}` + = note: different fn items have unique types, even if their signatures are the same +note: associated function defined here + --> $SRC_DIR/alloc/src/boxed.rs:LL:COL + +error[E0308]: mismatched types + --> $DIR/fn-pointer-mismatch.rs:36:29 + | +LL | let c: fn(u32) -> u32 = &foo; + | -------------- ^^^^ + | | | + | | expected fn pointer, found reference + | | help: consider removing the reference: `foo` + | expected due to this + | + = note: expected fn pointer `fn(u32) -> u32` + found reference `&fn(u32) -> u32 {foo}` + +error[E0308]: mismatched types + --> $DIR/fn-pointer-mismatch.rs:42:30 + | +LL | let d: &fn(u32) -> u32 = foo; + | --------------- ^^^ + | | | + | | expected `&fn(u32) -> u32`, found fn item + | | help: consider using a reference: `&foo` + | expected due to this + | + = note: expected reference `&fn(u32) -> u32` + found fn item `fn(u32) -> u32 {foo}` + +error[E0308]: mismatched types + --> $DIR/fn-pointer-mismatch.rs:48:30 + | +LL | let e: &fn(u32) -> u32 = &foo; + | --------------- ^^^^ + | | | + | | expected fn pointer, found fn item + | | help: consider casting to a fn pointer: `&(foo as fn(u32) -> u32)` + | expected due to this + | + = note: expected reference `&fn(u32) -> u32` + found reference `&fn(u32) -> u32 {foo}` + = note: fn items are distinct from fn pointers + +error: aborting due to 6 previous errors + +For more information about this error, try `rustc --explain E0308`. diff --git a/tests/ui/fn/implied-bounds-unnorm-associated-type-4.stderr b/tests/ui/fn/implied-bounds-unnorm-associated-type-4.stderr index fcbaa91d19f..4df639232a3 100644 --- a/tests/ui/fn/implied-bounds-unnorm-associated-type-4.stderr +++ b/tests/ui/fn/implied-bounds-unnorm-associated-type-4.stderr @@ -1,6 +1,8 @@ error[E0505]: cannot move out of `x` because it is borrowed --> $DIR/implied-bounds-unnorm-associated-type-4.rs:21:10 | +LL | let x = String::from("Hello World!"); + | - binding `x` declared here LL | let y = f(&x, ()); | -- borrow of `x` occurs here LL | drop(x); diff --git a/tests/ui/fn/implied-bounds-unnorm-associated-type.stderr b/tests/ui/fn/implied-bounds-unnorm-associated-type.stderr index e35f46e4439..d417f288393 100644 --- a/tests/ui/fn/implied-bounds-unnorm-associated-type.stderr +++ b/tests/ui/fn/implied-bounds-unnorm-associated-type.stderr @@ -1,6 +1,8 @@ error[E0505]: cannot move out of `x` because it is borrowed --> $DIR/implied-bounds-unnorm-associated-type.rs:20:10 | +LL | let x = String::from("Hello World!"); + | - binding `x` declared here LL | let y = f(&x, ()); | -- borrow of `x` occurs here LL | drop(x); diff --git a/tests/ui/generator/dropck.stderr b/tests/ui/generator/dropck.stderr index 7bb188352d7..b9a3a124acb 100644 --- a/tests/ui/generator/dropck.stderr +++ b/tests/ui/generator/dropck.stderr @@ -1,6 +1,9 @@ error[E0597]: `*cell` does not live long enough --> $DIR/dropck.rs:10:40 | +LL | let (mut gen, cell); + | ---- binding `cell` declared here +LL | cell = Box::new(RefCell::new(0)); LL | let ref_ = Box::leak(Box::new(Some(cell.borrow_mut()))); | ^^^^^^^^^^^^^^^^^ borrowed value does not live long enough ... diff --git a/tests/ui/generator/issue-68112.rs b/tests/ui/generator/issue-68112.rs index 21026f45cb8..9def544e3d2 100644 --- a/tests/ui/generator/issue-68112.rs +++ b/tests/ui/generator/issue-68112.rs @@ -40,6 +40,7 @@ fn test1() { require_send(send_gen); //~^ ERROR generator cannot be sent between threads //~| NOTE not `Send` + //~| NOTE use `std::sync::RwLock` instead } pub fn make_gen2<T>(t: T) -> impl Generator<Return = T> { @@ -66,6 +67,7 @@ fn test2() { //~| NOTE required for //~| NOTE required by a bound introduced by this call //~| NOTE captures the following types + //~| NOTE use `std::sync::RwLock` instead } fn main() {} diff --git a/tests/ui/generator/issue-68112.stderr b/tests/ui/generator/issue-68112.stderr index eb99d42c920..b42bc93d01f 100644 --- a/tests/ui/generator/issue-68112.stderr +++ b/tests/ui/generator/issue-68112.stderr @@ -5,6 +5,7 @@ LL | require_send(send_gen); | ^^^^^^^^ generator is not `Send` | = help: the trait `Sync` is not implemented for `RefCell<i32>` + = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead note: generator is not `Send` as this value is used across a yield --> $DIR/issue-68112.rs:36:9 | @@ -23,7 +24,7 @@ LL | fn require_send(_: impl Send) {} | ^^^^ required by this bound in `require_send` error[E0277]: `RefCell<i32>` cannot be shared between threads safely - --> $DIR/issue-68112.rs:63:18 + --> $DIR/issue-68112.rs:64:18 | LL | require_send(send_gen); | ------------ ^^^^^^^^ `RefCell<i32>` cannot be shared between threads safely @@ -31,25 +32,26 @@ LL | require_send(send_gen); | required by a bound introduced by this call | = help: the trait `Sync` is not implemented for `RefCell<i32>` + = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead = note: required for `Arc<RefCell<i32>>` to implement `Send` note: required because it's used within this generator - --> $DIR/issue-68112.rs:48:5 + --> $DIR/issue-68112.rs:49:5 | LL | || { | ^^ note: required because it appears within the type `impl Generator<Return = Arc<RefCell<i32>>>` - --> $DIR/issue-68112.rs:45:30 + --> $DIR/issue-68112.rs:46:30 | LL | pub fn make_gen2<T>(t: T) -> impl Generator<Return = T> { | ^^^^^^^^^^^^^^^^^^^^^^^^^^ note: required because it appears within the type `impl Generator<Return = Arc<RefCell<i32>>>` - --> $DIR/issue-68112.rs:53:34 + --> $DIR/issue-68112.rs:54:34 | LL | fn make_non_send_generator2() -> impl Generator<Return = Arc<RefCell<i32>>> { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ = note: required because it captures the following types: `impl Generator<Return = Arc<RefCell<i32>>>`, `()` note: required because it's used within this generator - --> $DIR/issue-68112.rs:59:20 + --> $DIR/issue-68112.rs:60:20 | LL | let send_gen = || { | ^^ diff --git a/tests/ui/generator/not-send-sync.stderr b/tests/ui/generator/not-send-sync.stderr index a821c57b923..1711df729b8 100644 --- a/tests/ui/generator/not-send-sync.stderr +++ b/tests/ui/generator/not-send-sync.stderr @@ -12,6 +12,7 @@ LL | | }); | |_____^ `Cell<i32>` cannot be shared between threads safely | = help: the trait `Sync` is not implemented for `Cell<i32>` + = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicI32` instead = note: required for `&Cell<i32>` to implement `Send` note: required because it's used within this generator --> $DIR/not-send-sync.rs:16:17 @@ -36,6 +37,7 @@ LL | | }); | |_____^ generator is not `Sync` | = help: within `[generator@$DIR/not-send-sync.rs:9:17: 9:19]`, the trait `Sync` is not implemented for `Cell<i32>` + = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicI32` instead note: generator is not `Sync` as this value is used across a yield --> $DIR/not-send-sync.rs:12:9 | diff --git a/tests/ui/generator/print/generator-print-verbose-1.stderr b/tests/ui/generator/print/generator-print-verbose-1.stderr index ebf35be581c..45d018b8eba 100644 --- a/tests/ui/generator/print/generator-print-verbose-1.stderr +++ b/tests/ui/generator/print/generator-print-verbose-1.stderr @@ -5,6 +5,7 @@ LL | require_send(send_gen); | ^^^^^^^^ generator is not `Send` | = help: the trait `Sync` is not implemented for `RefCell<i32>` + = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead note: generator is not `Send` as this value is used across a yield --> $DIR/generator-print-verbose-1.rs:35:9 | @@ -29,6 +30,7 @@ LL | require_send(send_gen); | required by a bound introduced by this call | = help: the trait `Sync` is not implemented for `RefCell<i32>` + = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead = note: required for `Arc<RefCell<i32>>` to implement `Send` note: required because it's used within this generator --> $DIR/generator-print-verbose-1.rs:42:5 diff --git a/tests/ui/generator/print/generator-print-verbose-2.stderr b/tests/ui/generator/print/generator-print-verbose-2.stderr index 909e49c38b8..59112ce0a79 100644 --- a/tests/ui/generator/print/generator-print-verbose-2.stderr +++ b/tests/ui/generator/print/generator-print-verbose-2.stderr @@ -12,6 +12,7 @@ LL | | }); | |_____^ `Cell<i32>` cannot be shared between threads safely | = help: the trait `Sync` is not implemented for `Cell<i32>` + = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicI32` instead = note: required for `&'_#4r Cell<i32>` to implement `Send` note: required because it's used within this generator --> $DIR/generator-print-verbose-2.rs:19:17 @@ -36,6 +37,7 @@ LL | | }); | |_____^ generator is not `Sync` | = help: within `[main::{closure#0} upvar_tys=() {Cell<i32>, ()}]`, the trait `Sync` is not implemented for `Cell<i32>` + = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicI32` instead note: generator is not `Sync` as this value is used across a yield --> $DIR/generator-print-verbose-2.rs:15:9 | diff --git a/tests/ui/generic-associated-types/bugs/hrtb-implied-1.rs b/tests/ui/generic-associated-types/bugs/hrtb-implied-1.rs index 719d1bd5a4c..5101de19d3c 100644 --- a/tests/ui/generic-associated-types/bugs/hrtb-implied-1.rs +++ b/tests/ui/generic-associated-types/bugs/hrtb-implied-1.rs @@ -1,5 +1,5 @@ // check-fail -// known-bug +// known-bug: unknown // This gives us problems because `for<'a> I::Item<'a>: Debug` should mean "for // all 'a where I::Item<'a> is WF", but really means "for all 'a possible" @@ -29,7 +29,6 @@ where fn main() { let slice = &mut (); - //~^ temporary value dropped while borrowed let windows = WindowsMut { slice }; print_items::<WindowsMut<'_>>(windows); } diff --git a/tests/ui/generic-associated-types/bugs/hrtb-implied-1.stderr b/tests/ui/generic-associated-types/bugs/hrtb-implied-1.stderr index 1c9abc4e837..362aeae2361 100644 --- a/tests/ui/generic-associated-types/bugs/hrtb-implied-1.stderr +++ b/tests/ui/generic-associated-types/bugs/hrtb-implied-1.stderr @@ -3,7 +3,7 @@ error[E0716]: temporary value dropped while borrowed | LL | let slice = &mut (); | ^^ creates a temporary value which is freed while still in use -... +LL | let windows = WindowsMut { slice }; LL | print_items::<WindowsMut<'_>>(windows); | -------------------------------------- argument requires that borrow lasts for `'static` LL | } diff --git a/tests/ui/generic-associated-types/bugs/hrtb-implied-2.rs b/tests/ui/generic-associated-types/bugs/hrtb-implied-2.rs index 8e6c5348e71..3174227a7a1 100644 --- a/tests/ui/generic-associated-types/bugs/hrtb-implied-2.rs +++ b/tests/ui/generic-associated-types/bugs/hrtb-implied-2.rs @@ -1,5 +1,5 @@ // check-fail -// known-bug +// known-bug: unknown // This gives us problems because `for<'a> I::Item<'a>: Debug` should mean "for // all 'a where I::Item<'a> is WF", but really means "for all 'a possible" @@ -16,7 +16,6 @@ where { let mut iter2 = Eat(iter, f); let _next = iter2.next(); - //~^ borrowed data escapes true } impl<I: LendingIterator> LendingIterator for &mut I { diff --git a/tests/ui/generic-associated-types/bugs/issue-100013.rs b/tests/ui/generic-associated-types/bugs/issue-100013.rs index fc4e47a3ba1..973c548d785 100644 --- a/tests/ui/generic-associated-types/bugs/issue-100013.rs +++ b/tests/ui/generic-associated-types/bugs/issue-100013.rs @@ -1,5 +1,5 @@ // check-fail -// known-bug +// known-bug: unknown // edition: 2021 // We really should accept this, but we need implied bounds between the regions @@ -13,7 +13,6 @@ pub trait FutureIterator { fn call<I: FutureIterator>() -> impl Send { async { // a generator checked for autotrait impl `Send` - //~^ lifetime bound not satisfied let x = None::<I::Future<'_, '_>>; // a type referencing GAT async {}.await; // a yield point } @@ -21,16 +20,13 @@ fn call<I: FutureIterator>() -> impl Send { fn call2<'a, 'b, I: FutureIterator>() -> impl Send { async { // a generator checked for autotrait impl `Send` - //~^ lifetime bound not satisfied let x = None::<I::Future<'a, 'b>>; // a type referencing GAT - //~^ lifetime may not live long enough async {}.await; // a yield point } } fn call3<'a: 'b, 'b, I: FutureIterator>() -> impl Send { async { // a generator checked for autotrait impl `Send` - //~^ lifetime bound not satisfied let x = None::<I::Future<'a, 'b>>; // a type referencing GAT async {}.await; // a yield point } diff --git a/tests/ui/generic-associated-types/bugs/issue-100013.stderr b/tests/ui/generic-associated-types/bugs/issue-100013.stderr index 72ae288dcab..9db124a81e4 100644 --- a/tests/ui/generic-associated-types/bugs/issue-100013.stderr +++ b/tests/ui/generic-associated-types/bugs/issue-100013.stderr @@ -2,77 +2,73 @@ error: lifetime bound not satisfied --> $DIR/issue-100013.rs:15:5 | LL | / async { // a generator checked for autotrait impl `Send` -LL | | LL | | let x = None::<I::Future<'_, '_>>; // a type referencing GAT LL | | async {}.await; // a yield point LL | | } | |_____^ | note: the lifetime defined here... - --> $DIR/issue-100013.rs:17:38 + --> $DIR/issue-100013.rs:16:38 | LL | let x = None::<I::Future<'_, '_>>; // a type referencing GAT | ^^ note: ...must outlive the lifetime defined here - --> $DIR/issue-100013.rs:17:34 + --> $DIR/issue-100013.rs:16:34 | LL | let x = None::<I::Future<'_, '_>>; // a type referencing GAT | ^^ = note: this is a known limitation that will be removed in the future (see issue #100013 <https://github.com/rust-lang/rust/issues/100013> for more information) error: lifetime bound not satisfied - --> $DIR/issue-100013.rs:23:5 + --> $DIR/issue-100013.rs:22:5 | LL | / async { // a generator checked for autotrait impl `Send` -LL | | LL | | let x = None::<I::Future<'a, 'b>>; // a type referencing GAT -LL | | LL | | async {}.await; // a yield point LL | | } | |_____^ | note: the lifetime defined here... - --> $DIR/issue-100013.rs:22:14 + --> $DIR/issue-100013.rs:21:14 | LL | fn call2<'a, 'b, I: FutureIterator>() -> impl Send { | ^^ note: ...must outlive the lifetime defined here - --> $DIR/issue-100013.rs:22:10 + --> $DIR/issue-100013.rs:21:10 | LL | fn call2<'a, 'b, I: FutureIterator>() -> impl Send { | ^^ = note: this is a known limitation that will be removed in the future (see issue #100013 <https://github.com/rust-lang/rust/issues/100013> for more information) error: lifetime may not live long enough - --> $DIR/issue-100013.rs:25:17 + --> $DIR/issue-100013.rs:23:17 | LL | fn call2<'a, 'b, I: FutureIterator>() -> impl Send { | -- -- lifetime `'b` defined here | | | lifetime `'a` defined here -... +LL | async { // a generator checked for autotrait impl `Send` LL | let x = None::<I::Future<'a, 'b>>; // a type referencing GAT | ^^^^^^^^^^^^^^^^^^^^^^^^^ requires that `'a` must outlive `'b` | = help: consider adding the following bound: `'a: 'b` error: lifetime bound not satisfied - --> $DIR/issue-100013.rs:32:5 + --> $DIR/issue-100013.rs:29:5 | LL | / async { // a generator checked for autotrait impl `Send` -LL | | LL | | let x = None::<I::Future<'a, 'b>>; // a type referencing GAT LL | | async {}.await; // a yield point LL | | } | |_____^ | note: the lifetime defined here... - --> $DIR/issue-100013.rs:31:18 + --> $DIR/issue-100013.rs:28:18 | LL | fn call3<'a: 'b, 'b, I: FutureIterator>() -> impl Send { | ^^ note: ...must outlive the lifetime defined here - --> $DIR/issue-100013.rs:31:10 + --> $DIR/issue-100013.rs:28:10 | LL | fn call3<'a: 'b, 'b, I: FutureIterator>() -> impl Send { | ^^ diff --git a/tests/ui/generic-associated-types/bugs/issue-91762.rs b/tests/ui/generic-associated-types/bugs/issue-91762.rs index dec668bec10..8f2cc45509f 100644 --- a/tests/ui/generic-associated-types/bugs/issue-91762.rs +++ b/tests/ui/generic-associated-types/bugs/issue-91762.rs @@ -1,5 +1,5 @@ // check-fail -// known-bug +// known-bug: unknown // We almost certainly want this to pass, but // it's particularly difficult currently, because we need a way of specifying @@ -22,7 +22,6 @@ pub trait FunctorExt<T>: Sized { arg = self; ret = <Self::Base as Functor>::fmap(arg); - //~^ type annotations needed } } diff --git a/tests/ui/generic-associated-types/issue-74684-1.stderr b/tests/ui/generic-associated-types/issue-74684-1.stderr index cacc973077c..b93ee37987f 100644 --- a/tests/ui/generic-associated-types/issue-74684-1.stderr +++ b/tests/ui/generic-associated-types/issue-74684-1.stderr @@ -4,6 +4,7 @@ error[E0597]: `a` does not live long enough LL | fn bug<'a, T: ?Sized + Fun<F<'a> = [u8]>>(_ : Box<T>) -> &'static T::F<'a> { | -- lifetime `'a` defined here LL | let a = [0; 1]; + | - binding `a` declared here LL | let _x = T::identity(&a); | ------------^^- | | | diff --git a/tests/ui/generic-associated-types/issue-88360.fixed b/tests/ui/generic-associated-types/issue-88360.fixed new file mode 100644 index 00000000000..3dea8bf7ac8 --- /dev/null +++ b/tests/ui/generic-associated-types/issue-88360.fixed @@ -0,0 +1,20 @@ +// run-rustfix + +trait GatTrait { + type Gat<'a> where Self: 'a; + + fn test(&self) -> Self::Gat<'_>; +} + +trait SuperTrait<T> +where + Self: 'static, + for<'a> Self: GatTrait<Gat<'a> = &'a T>, +{ + fn copy(&self) -> Self::Gat<'_> where T: Copy { + self.test() + //~^ mismatched types + } +} + +fn main() {} diff --git a/tests/ui/generic-associated-types/issue-88360.rs b/tests/ui/generic-associated-types/issue-88360.rs index c02690618d0..4d4c7ea3180 100644 --- a/tests/ui/generic-associated-types/issue-88360.rs +++ b/tests/ui/generic-associated-types/issue-88360.rs @@ -1,3 +1,5 @@ +// run-rustfix + trait GatTrait { type Gat<'a> where Self: 'a; diff --git a/tests/ui/generic-associated-types/issue-88360.stderr b/tests/ui/generic-associated-types/issue-88360.stderr index cd3750344dd..520aeff1894 100644 --- a/tests/ui/generic-associated-types/issue-88360.stderr +++ b/tests/ui/generic-associated-types/issue-88360.stderr @@ -1,5 +1,5 @@ error[E0308]: mismatched types - --> $DIR/issue-88360.rs:13:9 + --> $DIR/issue-88360.rs:15:9 | LL | trait SuperTrait<T> | - this type parameter @@ -7,13 +7,15 @@ LL | trait SuperTrait<T> LL | fn copy(&self) -> Self::Gat<'_> where T: Copy { | ------------- expected `&T` because of return type LL | *self.test() - | ^^^^^^^^^^^^ - | | - | expected `&T`, found type parameter `T` - | help: consider borrowing here: `&*self.test()` + | ^^^^^^^^^^^^ expected `&T`, found type parameter `T` | = note: expected reference `&T` found type parameter `T` +help: consider removing deref here + | +LL - *self.test() +LL + self.test() + | error: aborting due to previous error diff --git a/tests/ui/higher-rank-trait-bounds/hrtb-identity-fn-borrows.stderr b/tests/ui/higher-rank-trait-bounds/hrtb-identity-fn-borrows.stderr index 4886a3c8bad..25af011e3fc 100644 --- a/tests/ui/higher-rank-trait-bounds/hrtb-identity-fn-borrows.stderr +++ b/tests/ui/higher-rank-trait-bounds/hrtb-identity-fn-borrows.stderr @@ -2,9 +2,9 @@ error[E0506]: cannot assign to `x` because it is borrowed --> $DIR/hrtb-identity-fn-borrows.rs:14:5 | LL | let y = f.call(&x); - | -- borrow of `x` occurs here + | -- `x` is borrowed here LL | x = 5; - | ^^^^^ assignment to borrowed `x` occurs here + | ^^^^^ `x` is assigned to here but it was already borrowed ... LL | drop(y); | - borrow later used here diff --git a/tests/ui/impl-trait/feature-self-return-type.stderr b/tests/ui/impl-trait/feature-self-return-type.stderr index 601e53b7694..b9b8d00ce30 100644 --- a/tests/ui/impl-trait/feature-self-return-type.stderr +++ b/tests/ui/impl-trait/feature-self-return-type.stderr @@ -4,6 +4,7 @@ error[E0597]: `bar` does not live long enough LL | let x = { | - borrow later stored here LL | let bar = 22; + | --- binding `bar` declared here LL | Foo::new(&bar).into() | ^^^^ borrowed value does not live long enough LL | @@ -16,6 +17,7 @@ error[E0597]: `y` does not live long enough LL | let x = { | - borrow later stored here LL | let y = (); + | - binding `y` declared here LL | foo(&y) | ^^ borrowed value does not live long enough LL | @@ -28,6 +30,7 @@ error[E0597]: `y` does not live long enough LL | let x = { | - borrow later stored here LL | let y = (); + | - binding `y` declared here LL | foo(&y) | ^^ borrowed value does not live long enough LL | diff --git a/tests/ui/impl-trait/recursive-generator.rs b/tests/ui/impl-trait/recursive-generator.rs new file mode 100644 index 00000000000..e876f0fb43f --- /dev/null +++ b/tests/ui/impl-trait/recursive-generator.rs @@ -0,0 +1,23 @@ +#![feature(generators, generator_trait)] + +use std::ops::{Generator, GeneratorState}; + +fn foo() -> impl Generator<Yield = (), Return = ()> { + //~^ ERROR cannot resolve opaque type + //~| NOTE recursive opaque type + //~| NOTE in this expansion of desugaring of + || { + //~^ NOTE returning here + let mut gen = Box::pin(foo()); + //~^ NOTE generator captures itself here + let mut r = gen.as_mut().resume(()); + while let GeneratorState::Yielded(v) = r { + yield v; + r = gen.as_mut().resume(()); + } + } +} + +fn main() { + foo(); +} diff --git a/tests/ui/impl-trait/recursive-generator.stderr b/tests/ui/impl-trait/recursive-generator.stderr new file mode 100644 index 00000000000..e23fd4b4a85 --- /dev/null +++ b/tests/ui/impl-trait/recursive-generator.stderr @@ -0,0 +1,19 @@ +error[E0720]: cannot resolve opaque type + --> $DIR/recursive-generator.rs:5:13 + | +LL | fn foo() -> impl Generator<Yield = (), Return = ()> { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ recursive opaque type +... +LL | / || { +LL | | +LL | | let mut gen = Box::pin(foo()); + | | ------- generator captures itself here +LL | | +... | +LL | | } +LL | | } + | |_____- returning here with type `[generator@$DIR/recursive-generator.rs:9:5: 9:7]` + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0720`. diff --git a/tests/ui/impl-trait/recursive-impl-trait-type-indirect.stderr b/tests/ui/impl-trait/recursive-impl-trait-type-indirect.stderr index 2e34d3d4275..ebb231ae14f 100644 --- a/tests/ui/impl-trait/recursive-impl-trait-type-indirect.stderr +++ b/tests/ui/impl-trait/recursive-impl-trait-type-indirect.stderr @@ -53,6 +53,7 @@ LL | fn closure_capture() -> impl Sized { ... LL | / move || { LL | | x; + | | - closure captures itself here LL | | } | |_____- returning here with type `[closure@$DIR/recursive-impl-trait-type-indirect.rs:35:5: 35:12]` @@ -64,6 +65,7 @@ LL | fn closure_ref_capture() -> impl Sized { ... LL | / move || { LL | | &x; + | | - closure captures itself here LL | | } | |_____- returning here with type `[closure@$DIR/recursive-impl-trait-type-indirect.rs:43:5: 43:12]` @@ -94,6 +96,7 @@ LL | fn generator_capture() -> impl Sized { LL | / move || { LL | | yield; LL | | x; + | | - generator captures itself here LL | | } | |_____- returning here with type `[generator@$DIR/recursive-impl-trait-type-indirect.rs:61:5: 61:12]` @@ -114,6 +117,7 @@ LL | fn generator_hold() -> impl Sized { LL | LL | / move || { LL | | let x = generator_hold(); + | | - generator captures itself here LL | | yield; LL | | x; LL | | } diff --git a/tests/ui/implied-bounds/assoc-ty-wf-used-to-get-assoc-ty.stderr b/tests/ui/implied-bounds/assoc-ty-wf-used-to-get-assoc-ty.stderr index d0249e74f39..307899297bc 100644 --- a/tests/ui/implied-bounds/assoc-ty-wf-used-to-get-assoc-ty.stderr +++ b/tests/ui/implied-bounds/assoc-ty-wf-used-to-get-assoc-ty.stderr @@ -1,6 +1,8 @@ error[E0597]: `x` does not live long enough --> $DIR/assoc-ty-wf-used-to-get-assoc-ty.rs:24:31 | +LL | let x: u8 = 3; + | - binding `x` declared here LL | let _: &'static u8 = test(&x, &&3); | -----^^------ | | | diff --git a/tests/ui/imports/issue-99695-b.fixed b/tests/ui/imports/issue-99695-b.fixed new file mode 100644 index 00000000000..0e60c73b67a --- /dev/null +++ b/tests/ui/imports/issue-99695-b.fixed @@ -0,0 +1,20 @@ +// run-rustfix +#![allow(unused, nonstandard_style)] +mod m { + + mod p { + #[macro_export] + macro_rules! nu { + {} => {}; + } + + pub struct other_item; + } + + use ::nu; +pub use self::p::{other_item as _}; + //~^ ERROR unresolved import `self::p::nu` [E0432] + //~| HELP a macro with this name exists at the root of the crate +} + +fn main() {} diff --git a/tests/ui/imports/issue-99695-b.rs b/tests/ui/imports/issue-99695-b.rs new file mode 100644 index 00000000000..031443a1f5d --- /dev/null +++ b/tests/ui/imports/issue-99695-b.rs @@ -0,0 +1,19 @@ +// run-rustfix +#![allow(unused, nonstandard_style)] +mod m { + + mod p { + #[macro_export] + macro_rules! nu { + {} => {}; + } + + pub struct other_item; + } + + pub use self::p::{nu, other_item as _}; + //~^ ERROR unresolved import `self::p::nu` [E0432] + //~| HELP a macro with this name exists at the root of the crate +} + +fn main() {} diff --git a/tests/ui/imports/issue-99695-b.stderr b/tests/ui/imports/issue-99695-b.stderr new file mode 100644 index 00000000000..b6f5c726a5c --- /dev/null +++ b/tests/ui/imports/issue-99695-b.stderr @@ -0,0 +1,16 @@ +error[E0432]: unresolved import `self::p::nu` + --> $DIR/issue-99695-b.rs:14:23 + | +LL | pub use self::p::{nu, other_item as _}; + | ^^ no `nu` in `m::p` + | + = note: this could be because a macro annotated with `#[macro_export]` will be exported at the root of the crate instead of the module where it is defined +help: a macro with this name exists at the root of the crate + | +LL ~ use ::nu; +LL ~ pub use self::p::{other_item as _}; + | + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0432`. diff --git a/tests/ui/imports/issue-99695.fixed b/tests/ui/imports/issue-99695.fixed new file mode 100644 index 00000000000..6bf228b23aa --- /dev/null +++ b/tests/ui/imports/issue-99695.fixed @@ -0,0 +1,17 @@ +// run-rustfix +#![allow(unused, nonstandard_style)] +mod m { + #[macro_export] + macro_rules! nu { + {} => {}; + } + + pub struct other_item; + + use ::nu; +pub use self::{other_item as _}; + //~^ ERROR unresolved import `self::nu` [E0432] + //~| HELP a macro with this name exists at the root of the crate +} + +fn main() {} diff --git a/tests/ui/imports/issue-99695.rs b/tests/ui/imports/issue-99695.rs new file mode 100644 index 00000000000..f7199f1497a --- /dev/null +++ b/tests/ui/imports/issue-99695.rs @@ -0,0 +1,16 @@ +// run-rustfix +#![allow(unused, nonstandard_style)] +mod m { + #[macro_export] + macro_rules! nu { + {} => {}; + } + + pub struct other_item; + + pub use self::{nu, other_item as _}; + //~^ ERROR unresolved import `self::nu` [E0432] + //~| HELP a macro with this name exists at the root of the crate +} + +fn main() {} diff --git a/tests/ui/imports/issue-99695.stderr b/tests/ui/imports/issue-99695.stderr new file mode 100644 index 00000000000..0ef762e1c82 --- /dev/null +++ b/tests/ui/imports/issue-99695.stderr @@ -0,0 +1,16 @@ +error[E0432]: unresolved import `self::nu` + --> $DIR/issue-99695.rs:11:20 + | +LL | pub use self::{nu, other_item as _}; + | ^^ no `nu` in `m` + | + = note: this could be because a macro annotated with `#[macro_export]` will be exported at the root of the crate instead of the module where it is defined +help: a macro with this name exists at the root of the crate + | +LL ~ use ::nu; +LL ~ pub use self::{other_item as _}; + | + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0432`. diff --git a/tests/ui/inference/issue-107090.rs b/tests/ui/inference/issue-107090.rs new file mode 100644 index 00000000000..9426445656f --- /dev/null +++ b/tests/ui/inference/issue-107090.rs @@ -0,0 +1,31 @@ +use std::marker::PhantomData; +struct Foo<'a, 'b, T>(PhantomData<(&'a (), &'b (), T)>) +where + Foo<'short, 'out, T>: Convert<'a, 'b>; + //~^ ERROR mismatched types + //~^^ ERROR mismatched types + //~^^^ ERROR use of undeclared lifetime name + //~| ERROR use of undeclared lifetime name `'out` + +trait Convert<'a, 'b>: Sized { + fn cast(&'a self) -> &'b Self; +} +impl<'long: 'short, 'short, T> Convert<'long, 'b> for Foo<'short, 'out, T> { + //~^ ERROR use of undeclared lifetime name + //~^^ ERROR use of undeclared lifetime name `'out` + //~| ERROR cannot infer an appropriate lifetime for lifetime parameter + fn cast(&'long self) -> &'short Foo<'short, 'out, T> { + //~^ ERROR use of undeclared lifetime name + //~| ERROR cannot infer an appropriate lifetime for lifetime parameter + self + } +} + +fn badboi<'in_, 'out, T>(x: Foo<'in_, 'out, T>, sadness: &'in_ Foo<'short, 'out, T>) -> &'out T { + //~^ ERROR use of undeclared lifetime name + //~^^ ERROR incompatible lifetime on type + //~| ERROR `x` has lifetime `'in_` but it needs to satisfy a `'static` lifetime requirement + sadness.cast() +} + +fn main() {} diff --git a/tests/ui/inference/issue-107090.stderr b/tests/ui/inference/issue-107090.stderr new file mode 100644 index 00000000000..33cb39014ac --- /dev/null +++ b/tests/ui/inference/issue-107090.stderr @@ -0,0 +1,173 @@ +error[E0261]: use of undeclared lifetime name `'short` + --> $DIR/issue-107090.rs:4:9 + | +LL | Foo<'short, 'out, T>: Convert<'a, 'b>; + | ^^^^^^ undeclared lifetime + | + = note: for more information on higher-ranked polymorphism, visit https://doc.rust-lang.org/nomicon/hrtb.html +help: consider making the bound lifetime-generic with a new `'short` lifetime + | +LL | for<'short> Foo<'short, 'out, T>: Convert<'a, 'b>; + | +++++++++++ +help: consider introducing lifetime `'short` here + | +LL | struct Foo<'short, 'a, 'b, T>(PhantomData<(&'a (), &'b (), T)>) + | +++++++ + +error[E0261]: use of undeclared lifetime name `'out` + --> $DIR/issue-107090.rs:4:17 + | +LL | Foo<'short, 'out, T>: Convert<'a, 'b>; + | ^^^^ undeclared lifetime + | +help: consider making the bound lifetime-generic with a new `'out` lifetime + | +LL | for<'out> Foo<'short, 'out, T>: Convert<'a, 'b>; + | +++++++++ +help: consider introducing lifetime `'out` here + | +LL | struct Foo<'out, 'a, 'b, T>(PhantomData<(&'a (), &'b (), T)>) + | +++++ + +error[E0261]: use of undeclared lifetime name `'b` + --> $DIR/issue-107090.rs:13:47 + | +LL | impl<'long: 'short, 'short, T> Convert<'long, 'b> for Foo<'short, 'out, T> { + | - ^^ undeclared lifetime + | | + | help: consider introducing lifetime `'b` here: `'b,` + +error[E0261]: use of undeclared lifetime name `'out` + --> $DIR/issue-107090.rs:13:67 + | +LL | impl<'long: 'short, 'short, T> Convert<'long, 'b> for Foo<'short, 'out, T> { + | - help: consider introducing lifetime `'out` here: `'out,` ^^^^ undeclared lifetime + +error[E0261]: use of undeclared lifetime name `'out` + --> $DIR/issue-107090.rs:17:49 + | +LL | fn cast(&'long self) -> &'short Foo<'short, 'out, T> { + | ^^^^ undeclared lifetime + | +help: consider introducing lifetime `'out` here + | +LL | fn cast<'out>(&'long self) -> &'short Foo<'short, 'out, T> { + | ++++++ +help: consider introducing lifetime `'out` here + | +LL | impl<'out, 'long: 'short, 'short, T> Convert<'long, 'b> for Foo<'short, 'out, T> { + | +++++ + +error[E0261]: use of undeclared lifetime name `'short` + --> $DIR/issue-107090.rs:24:68 + | +LL | fn badboi<'in_, 'out, T>(x: Foo<'in_, 'out, T>, sadness: &'in_ Foo<'short, 'out, T>) -> &'out T { + | - ^^^^^^ undeclared lifetime + | | + | help: consider introducing lifetime `'short` here: `'short,` + +error[E0308]: mismatched types + --> $DIR/issue-107090.rs:4:27 + | +LL | Foo<'short, 'out, T>: Convert<'a, 'b>; + | ^^^^^^^^^^^^^^^ lifetime mismatch + | + = note: expected trait `Convert<'static, 'static>` + found trait `Convert<'a, 'b>` +note: the lifetime `'a` as defined here... + --> $DIR/issue-107090.rs:2:12 + | +LL | struct Foo<'a, 'b, T>(PhantomData<(&'a (), &'b (), T)>) + | ^^ + = note: ...does not necessarily outlive the static lifetime + +error[E0308]: mismatched types + --> $DIR/issue-107090.rs:4:27 + | +LL | Foo<'short, 'out, T>: Convert<'a, 'b>; + | ^^^^^^^^^^^^^^^ lifetime mismatch + | + = note: expected trait `Convert<'static, 'static>` + found trait `Convert<'a, 'b>` +note: the lifetime `'b` as defined here... + --> $DIR/issue-107090.rs:2:16 + | +LL | struct Foo<'a, 'b, T>(PhantomData<(&'a (), &'b (), T)>) + | ^^ + = note: ...does not necessarily outlive the static lifetime + +error[E0495]: cannot infer an appropriate lifetime for lifetime parameter `'long` due to conflicting requirements + --> $DIR/issue-107090.rs:13:55 + | +LL | impl<'long: 'short, 'short, T> Convert<'long, 'b> for Foo<'short, 'out, T> { + | ^^^^^^^^^^^^^^^^^^^^ + | +note: first, the lifetime cannot outlive the lifetime `'short` as defined here... + --> $DIR/issue-107090.rs:13:21 + | +LL | impl<'long: 'short, 'short, T> Convert<'long, 'b> for Foo<'short, 'out, T> { + | ^^^^^^ + = note: ...but the lifetime must also be valid for the static lifetime... +note: ...so that the types are compatible + --> $DIR/issue-107090.rs:13:55 + | +LL | impl<'long: 'short, 'short, T> Convert<'long, 'b> for Foo<'short, 'out, T> { + | ^^^^^^^^^^^^^^^^^^^^ + = note: expected `Convert<'short, 'static>` + found `Convert<'_, 'static>` + +error: incompatible lifetime on type + --> $DIR/issue-107090.rs:24:29 + | +LL | fn badboi<'in_, 'out, T>(x: Foo<'in_, 'out, T>, sadness: &'in_ Foo<'short, 'out, T>) -> &'out T { + | ^^^^^^^^^^^^^^^^^^ + | +note: because this has an unmet lifetime requirement + --> $DIR/issue-107090.rs:4:27 + | +LL | Foo<'short, 'out, T>: Convert<'a, 'b>; + | ^^^^^^^^^^^^^^^ introduces a `'static` lifetime requirement +note: the lifetime `'out` as defined here... + --> $DIR/issue-107090.rs:24:17 + | +LL | fn badboi<'in_, 'out, T>(x: Foo<'in_, 'out, T>, sadness: &'in_ Foo<'short, 'out, T>) -> &'out T { + | ^^^^ +note: ...does not necessarily outlive the static lifetime introduced by the compatible `impl` + --> $DIR/issue-107090.rs:13:1 + | +LL | impl<'long: 'short, 'short, T> Convert<'long, 'b> for Foo<'short, 'out, T> { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +error[E0759]: `x` has lifetime `'in_` but it needs to satisfy a `'static` lifetime requirement + --> $DIR/issue-107090.rs:24:29 + | +LL | fn badboi<'in_, 'out, T>(x: Foo<'in_, 'out, T>, sadness: &'in_ Foo<'short, 'out, T>) -> &'out T { + | ^^^^^^^^^^^^^^^^^^ + | | + | this data with lifetime `'in_`... + | ...is used and required to live as long as `'static` here + +error[E0495]: cannot infer an appropriate lifetime for lifetime parameter `'long` due to conflicting requirements + --> $DIR/issue-107090.rs:17:13 + | +LL | fn cast(&'long self) -> &'short Foo<'short, 'out, T> { + | ^^^^^^^^^^^ + | +note: first, the lifetime cannot outlive the lifetime `'short` as defined here... + --> $DIR/issue-107090.rs:13:21 + | +LL | impl<'long: 'short, 'short, T> Convert<'long, 'b> for Foo<'short, 'out, T> { + | ^^^^^^ + = note: ...but the lifetime must also be valid for the static lifetime... +note: ...so that the types are compatible + --> $DIR/issue-107090.rs:17:13 + | +LL | fn cast(&'long self) -> &'short Foo<'short, 'out, T> { + | ^^^^^^^^^^^ + = note: expected `Convert<'short, 'static>` + found `Convert<'_, 'static>` + +error: aborting due to 12 previous errors + +Some errors have detailed explanations: E0261, E0308, E0495, E0759. +For more information about an error, try `rustc --explain E0261`. diff --git a/tests/ui/inline-const/const-expr-lifetime-err.stderr b/tests/ui/inline-const/const-expr-lifetime-err.stderr index a23f7c9a796..443fcf89c4e 100644 --- a/tests/ui/inline-const/const-expr-lifetime-err.stderr +++ b/tests/ui/inline-const/const-expr-lifetime-err.stderr @@ -4,6 +4,7 @@ error[E0597]: `y` does not live long enough LL | fn foo<'a>() { | -- lifetime `'a` defined here LL | let y = (); + | - binding `y` declared here LL | equate(InvariantRef::new(&y), const { InvariantRef::<'a>::NEW }); | ------------------^^- | | | diff --git a/tests/ui/issues/issue-19100.fixed b/tests/ui/issues/issue-19100.fixed index 6dc8f7ddbc9..029855de2de 100644 --- a/tests/ui/issues/issue-19100.fixed +++ b/tests/ui/issues/issue-19100.fixed @@ -1,4 +1,3 @@ -// run-pass // run-rustfix #![allow(non_snake_case)] @@ -16,11 +15,11 @@ impl Foo { match self { & Foo::Bar if true -//~^ WARN pattern binding `Bar` is named the same as one of the variants of the type `Foo` +//~^ ERROR pattern binding `Bar` is named the same as one of the variants of the type `Foo` => println!("bar"), & Foo::Baz if false -//~^ WARN pattern binding `Baz` is named the same as one of the variants of the type `Foo` +//~^ ERROR pattern binding `Baz` is named the same as one of the variants of the type `Foo` => println!("baz"), _ => () } diff --git a/tests/ui/issues/issue-19100.rs b/tests/ui/issues/issue-19100.rs index cfdc7c9e754..bd9e4ea5b60 100644 --- a/tests/ui/issues/issue-19100.rs +++ b/tests/ui/issues/issue-19100.rs @@ -1,4 +1,3 @@ -// run-pass // run-rustfix #![allow(non_snake_case)] @@ -16,11 +15,11 @@ impl Foo { match self { & Bar if true -//~^ WARN pattern binding `Bar` is named the same as one of the variants of the type `Foo` +//~^ ERROR pattern binding `Bar` is named the same as one of the variants of the type `Foo` => println!("bar"), & Baz if false -//~^ WARN pattern binding `Baz` is named the same as one of the variants of the type `Foo` +//~^ ERROR pattern binding `Baz` is named the same as one of the variants of the type `Foo` => println!("baz"), _ => () } diff --git a/tests/ui/issues/issue-19100.stderr b/tests/ui/issues/issue-19100.stderr index 293430691dd..ebbf083b7de 100644 --- a/tests/ui/issues/issue-19100.stderr +++ b/tests/ui/issues/issue-19100.stderr @@ -1,17 +1,17 @@ -warning[E0170]: pattern binding `Bar` is named the same as one of the variants of the type `Foo` - --> $DIR/issue-19100.rs:18:1 +error[E0170]: pattern binding `Bar` is named the same as one of the variants of the type `Foo` + --> $DIR/issue-19100.rs:17:1 | LL | Bar if true | ^^^ help: to match on the variant, qualify the path: `Foo::Bar` | - = note: `#[warn(bindings_with_variant_name)]` on by default + = note: `#[deny(bindings_with_variant_name)]` on by default -warning[E0170]: pattern binding `Baz` is named the same as one of the variants of the type `Foo` - --> $DIR/issue-19100.rs:22:1 +error[E0170]: pattern binding `Baz` is named the same as one of the variants of the type `Foo` + --> $DIR/issue-19100.rs:21:1 | LL | Baz if false | ^^^ help: to match on the variant, qualify the path: `Foo::Baz` -warning: 2 warnings emitted +error: aborting due to 2 previous errors For more information about this error, try `rustc --explain E0170`. diff --git a/tests/ui/issues/issue-40288.stderr b/tests/ui/issues/issue-40288.stderr index fb4ecab362d..db5d064379a 100644 --- a/tests/ui/issues/issue-40288.stderr +++ b/tests/ui/issues/issue-40288.stderr @@ -2,10 +2,10 @@ error[E0506]: cannot assign to `*refr` because it is borrowed --> $DIR/issue-40288.rs:16:5 | LL | save_ref(&*refr, &mut out); - | ------ borrow of `*refr` occurs here + | ------ `*refr` is borrowed here ... LL | *refr = 3; - | ^^^^^^^^^ assignment to borrowed `*refr` occurs here + | ^^^^^^^^^ `*refr` is assigned to here but it was already borrowed ... LL | println!("{:?}", out[0]); | ------ borrow later used here diff --git a/tests/ui/issues/issue-45697-1.stderr b/tests/ui/issues/issue-45697-1.stderr index 30c69f19658..474313398e2 100644 --- a/tests/ui/issues/issue-45697-1.stderr +++ b/tests/ui/issues/issue-45697-1.stderr @@ -2,7 +2,7 @@ error[E0503]: cannot use `*y.pointer` because it was mutably borrowed --> $DIR/issue-45697-1.rs:20:9 | LL | let z = copy_borrowed_ptr(&mut y); - | ------ borrow of `y` occurs here + | ------ `y` is borrowed here LL | *y.pointer += 1; | ^^^^^^^^^^^^^^^ use of borrowed `y` ... @@ -13,9 +13,9 @@ error[E0506]: cannot assign to `*y.pointer` because it is borrowed --> $DIR/issue-45697-1.rs:20:9 | LL | let z = copy_borrowed_ptr(&mut y); - | ------ borrow of `*y.pointer` occurs here + | ------ `*y.pointer` is borrowed here LL | *y.pointer += 1; - | ^^^^^^^^^^^^^^^ assignment to borrowed `*y.pointer` occurs here + | ^^^^^^^^^^^^^^^ `*y.pointer` is assigned to here but it was already borrowed ... LL | *z.pointer += 1; | --------------- borrow later used here diff --git a/tests/ui/issues/issue-45697.stderr b/tests/ui/issues/issue-45697.stderr index 26749d36f0b..7986fd5c9df 100644 --- a/tests/ui/issues/issue-45697.stderr +++ b/tests/ui/issues/issue-45697.stderr @@ -2,7 +2,7 @@ error[E0503]: cannot use `*y.pointer` because it was mutably borrowed --> $DIR/issue-45697.rs:20:9 | LL | let z = copy_borrowed_ptr(&mut y); - | ------ borrow of `y` occurs here + | ------ `y` is borrowed here LL | *y.pointer += 1; | ^^^^^^^^^^^^^^^ use of borrowed `y` ... @@ -13,9 +13,9 @@ error[E0506]: cannot assign to `*y.pointer` because it is borrowed --> $DIR/issue-45697.rs:20:9 | LL | let z = copy_borrowed_ptr(&mut y); - | ------ borrow of `*y.pointer` occurs here + | ------ `*y.pointer` is borrowed here LL | *y.pointer += 1; - | ^^^^^^^^^^^^^^^ assignment to borrowed `*y.pointer` occurs here + | ^^^^^^^^^^^^^^^ `*y.pointer` is assigned to here but it was already borrowed ... LL | *z.pointer += 1; | --------------- borrow later used here diff --git a/tests/ui/issues/issue-46471-1.stderr b/tests/ui/issues/issue-46471-1.stderr index b09f31729a5..2ae6e709d5a 100644 --- a/tests/ui/issues/issue-46471-1.stderr +++ b/tests/ui/issues/issue-46471-1.stderr @@ -1,11 +1,10 @@ error[E0597]: `z` does not live long enough --> $DIR/issue-46471-1.rs:4:9 | +LL | let mut z = 0; + | ----- binding `z` declared here LL | &mut z - | ^^^^^^ - | | - | borrowed value does not live long enough - | borrow later used here + | ^^^^^^ borrowed value does not live long enough LL | }; | - `z` dropped here while still borrowed diff --git a/tests/ui/issues/issue-52126-assign-op-invariance.stderr b/tests/ui/issues/issue-52126-assign-op-invariance.stderr index d4506757762..2d3b48832c5 100644 --- a/tests/ui/issues/issue-52126-assign-op-invariance.stderr +++ b/tests/ui/issues/issue-52126-assign-op-invariance.stderr @@ -1,6 +1,8 @@ error[E0597]: `line` does not live long enough --> $DIR/issue-52126-assign-op-invariance.rs:34:28 | +LL | for line in vec!["123456789".to_string(), "12345678".to_string()] { + | ---- binding `line` declared here LL | let v: Vec<&str> = line.split_whitespace().collect(); | ^^^^^^^^^^^^^^^^^^^^^^^ borrowed value does not live long enough ... diff --git a/tests/ui/issues/issue-65634-raw-ident-suggestion.stderr b/tests/ui/issues/issue-65634-raw-ident-suggestion.edition2015.stderr index 68ccf5cab5b..d0cb16995af 100644 --- a/tests/ui/issues/issue-65634-raw-ident-suggestion.stderr +++ b/tests/ui/issues/issue-65634-raw-ident-suggestion.edition2015.stderr @@ -1,16 +1,16 @@ error[E0034]: multiple applicable items in scope - --> $DIR/issue-65634-raw-ident-suggestion.rs:21:13 + --> $DIR/issue-65634-raw-ident-suggestion.rs:24:13 | LL | r#fn {}.r#struct(); | ^^^^^^^^ multiple `r#struct` found | -note: candidate #1 is defined in an impl of the trait `async` for the type `fn` - --> $DIR/issue-65634-raw-ident-suggestion.rs:4:5 +note: candidate #1 is defined in an impl of the trait `async` for the type `r#fn` + --> $DIR/issue-65634-raw-ident-suggestion.rs:7:5 | LL | fn r#struct(&self) { | ^^^^^^^^^^^^^^^^^^ -note: candidate #2 is defined in an impl of the trait `await` for the type `fn` - --> $DIR/issue-65634-raw-ident-suggestion.rs:10:5 +note: candidate #2 is defined in an impl of the trait `await` for the type `r#fn` + --> $DIR/issue-65634-raw-ident-suggestion.rs:13:5 | LL | fn r#struct(&self) { | ^^^^^^^^^^^^^^^^^^ diff --git a/tests/ui/issues/issue-65634-raw-ident-suggestion.edition2018.stderr b/tests/ui/issues/issue-65634-raw-ident-suggestion.edition2018.stderr new file mode 100644 index 00000000000..a75c1c41363 --- /dev/null +++ b/tests/ui/issues/issue-65634-raw-ident-suggestion.edition2018.stderr @@ -0,0 +1,28 @@ +error[E0034]: multiple applicable items in scope + --> $DIR/issue-65634-raw-ident-suggestion.rs:24:13 + | +LL | r#fn {}.r#struct(); + | ^^^^^^^^ multiple `r#struct` found + | +note: candidate #1 is defined in an impl of the trait `r#async` for the type `r#fn` + --> $DIR/issue-65634-raw-ident-suggestion.rs:7:5 + | +LL | fn r#struct(&self) { + | ^^^^^^^^^^^^^^^^^^ +note: candidate #2 is defined in an impl of the trait `r#await` for the type `r#fn` + --> $DIR/issue-65634-raw-ident-suggestion.rs:13:5 + | +LL | fn r#struct(&self) { + | ^^^^^^^^^^^^^^^^^^ +help: disambiguate the associated function for candidate #1 + | +LL | r#async::r#struct(&r#fn {}); + | ~~~~~~~~~~~~~~~~~~~~~~~~~~~ +help: disambiguate the associated function for candidate #2 + | +LL | r#await::r#struct(&r#fn {}); + | ~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0034`. diff --git a/tests/ui/issues/issue-65634-raw-ident-suggestion.rs b/tests/ui/issues/issue-65634-raw-ident-suggestion.rs index b928510258b..03dd0340c9d 100644 --- a/tests/ui/issues/issue-65634-raw-ident-suggestion.rs +++ b/tests/ui/issues/issue-65634-raw-ident-suggestion.rs @@ -1,3 +1,6 @@ +// revisions: edition2015 edition2018 +//[edition2018]edition:2018 + #![allow(non_camel_case_types)] trait r#async { diff --git a/tests/ui/issues/issue-7364.stderr b/tests/ui/issues/issue-7364.stderr index 5dc8c2b607e..aee73380f15 100644 --- a/tests/ui/issues/issue-7364.stderr +++ b/tests/ui/issues/issue-7364.stderr @@ -5,6 +5,7 @@ LL | static boxed: Box<RefCell<isize>> = Box::new(RefCell::new(0)); | ^^^^^^^^^^^^^^^^^^^ `RefCell<isize>` cannot be shared between threads safely | = help: the trait `Sync` is not implemented for `RefCell<isize>` + = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead = note: required for `Unique<RefCell<isize>>` to implement `Sync` = note: required because it appears within the type `Box<RefCell<isize>>` = note: shared static variables must have a type that implements `Sync` diff --git a/tests/ui/let-else/accidental-if.rs b/tests/ui/let-else/accidental-if.rs new file mode 100644 index 00000000000..3fba630435c --- /dev/null +++ b/tests/ui/let-else/accidental-if.rs @@ -0,0 +1,6 @@ +fn main() { + let x = Some(123); + if let Some(y) = x else { //~ ERROR this `if` expression is missing a block + return; + }; +} diff --git a/tests/ui/let-else/accidental-if.stderr b/tests/ui/let-else/accidental-if.stderr new file mode 100644 index 00000000000..5474a67aac4 --- /dev/null +++ b/tests/ui/let-else/accidental-if.stderr @@ -0,0 +1,19 @@ +error: this `if` expression is missing a block after the condition + --> $DIR/accidental-if.rs:3:5 + | +LL | if let Some(y) = x else { + | ^^ + | +help: add a block here + --> $DIR/accidental-if.rs:3:23 + | +LL | if let Some(y) = x else { + | ^ +help: remove the `if` if you meant to write a `let...else` statement + --> $DIR/accidental-if.rs:3:5 + | +LL | if let Some(y) = x else { + | ^^ + +error: aborting due to previous error + diff --git a/tests/ui/lifetimes/issue-103582-hint-for-missing-lifetime-bound-on-trait-object-using-type-alias.fixed b/tests/ui/lifetimes/issue-103582-hint-for-missing-lifetime-bound-on-trait-object-using-type-alias.fixed new file mode 100644 index 00000000000..aa3bce2945b --- /dev/null +++ b/tests/ui/lifetimes/issue-103582-hint-for-missing-lifetime-bound-on-trait-object-using-type-alias.fixed @@ -0,0 +1,45 @@ +// run-rustfix + +trait Greeter0 { + fn greet(&self); +} + +trait Greeter1 { + fn greet(&self); +} + +type BoxedGreeter<'a> = (Box<dyn Greeter0 + 'a>, Box<dyn Greeter1 + 'a>); +//~^ HELP to declare that the trait object captures data from argument `self`, you can add a lifetime parameter `'a` in the type alias + +struct FixedGreeter<'a>(pub &'a str); + +impl Greeter0 for FixedGreeter<'_> { + fn greet(&self) { + println!("0 {}", self.0) + } +} + +impl Greeter1 for FixedGreeter<'_> { + fn greet(&self) { + println!("1 {}", self.0) + } +} + +struct Greetings(pub Vec<String>); + +impl Greetings { + pub fn get(&self, i: usize) -> BoxedGreeter { + (Box::new(FixedGreeter(&self.0[i])), Box::new(FixedGreeter(&self.0[i]))) + //~^ ERROR lifetime may not live long enough + } +} + +fn main() { + let mut g = Greetings {0 : vec!()}; + g.0.push("a".to_string()); + g.0.push("b".to_string()); + g.get(0).0.greet(); + g.get(0).1.greet(); + g.get(1).0.greet(); + g.get(1).1.greet(); +} diff --git a/tests/ui/lifetimes/issue-103582-hint-for-missing-lifetime-bound-on-trait-object-using-type-alias.rs b/tests/ui/lifetimes/issue-103582-hint-for-missing-lifetime-bound-on-trait-object-using-type-alias.rs new file mode 100644 index 00000000000..20c88ec6981 --- /dev/null +++ b/tests/ui/lifetimes/issue-103582-hint-for-missing-lifetime-bound-on-trait-object-using-type-alias.rs @@ -0,0 +1,45 @@ +// run-rustfix + +trait Greeter0 { + fn greet(&self); +} + +trait Greeter1 { + fn greet(&self); +} + +type BoxedGreeter = (Box<dyn Greeter0>, Box<dyn Greeter1>); +//~^ HELP to declare that the trait object captures data from argument `self`, you can add a lifetime parameter `'a` in the type alias + +struct FixedGreeter<'a>(pub &'a str); + +impl Greeter0 for FixedGreeter<'_> { + fn greet(&self) { + println!("0 {}", self.0) + } +} + +impl Greeter1 for FixedGreeter<'_> { + fn greet(&self) { + println!("1 {}", self.0) + } +} + +struct Greetings(pub Vec<String>); + +impl Greetings { + pub fn get(&self, i: usize) -> BoxedGreeter { + (Box::new(FixedGreeter(&self.0[i])), Box::new(FixedGreeter(&self.0[i]))) + //~^ ERROR lifetime may not live long enough + } +} + +fn main() { + let mut g = Greetings {0 : vec!()}; + g.0.push("a".to_string()); + g.0.push("b".to_string()); + g.get(0).0.greet(); + g.get(0).1.greet(); + g.get(1).0.greet(); + g.get(1).1.greet(); +} diff --git a/tests/ui/lifetimes/issue-103582-hint-for-missing-lifetime-bound-on-trait-object-using-type-alias.stderr b/tests/ui/lifetimes/issue-103582-hint-for-missing-lifetime-bound-on-trait-object-using-type-alias.stderr new file mode 100644 index 00000000000..808d8bb9058 --- /dev/null +++ b/tests/ui/lifetimes/issue-103582-hint-for-missing-lifetime-bound-on-trait-object-using-type-alias.stderr @@ -0,0 +1,15 @@ +error: lifetime may not live long enough + --> $DIR/issue-103582-hint-for-missing-lifetime-bound-on-trait-object-using-type-alias.rs:32:9 + | +LL | pub fn get(&self, i: usize) -> BoxedGreeter { + | - let's call the lifetime of this reference `'1` +LL | (Box::new(FixedGreeter(&self.0[i])), Box::new(FixedGreeter(&self.0[i]))) + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ returning this value requires that `'1` must outlive `'static` + | +help: to declare that the trait object captures data from argument `self`, you can add a lifetime parameter `'a` in the type alias + | +LL | type BoxedGreeter<'a> = (Box<dyn Greeter0 + 'a>, Box<dyn Greeter1 + 'a>); + | ++++ ++++ ++++ + +error: aborting due to previous error + diff --git a/tests/ui/lifetimes/issue-90600-expected-return-static-indirect.stderr b/tests/ui/lifetimes/issue-90600-expected-return-static-indirect.stderr index 99e1e7217b4..3602de8dd95 100644 --- a/tests/ui/lifetimes/issue-90600-expected-return-static-indirect.stderr +++ b/tests/ui/lifetimes/issue-90600-expected-return-static-indirect.stderr @@ -1,6 +1,8 @@ error[E0597]: `foo` does not live long enough --> $DIR/issue-90600-expected-return-static-indirect.rs:7:32 | +LL | fn inner(mut foo: &[u8]) { + | ------- binding `foo` declared here LL | let refcell = RefCell::new(&mut foo); | ^^^^^^^^ borrowed value does not live long enough LL | diff --git a/tests/ui/lint/issue-30302.rs b/tests/ui/lint/issue-30302.rs index c37d4f29d10..5eccb8cd5d8 100644 --- a/tests/ui/lint/issue-30302.rs +++ b/tests/ui/lint/issue-30302.rs @@ -11,7 +11,7 @@ enum Stack<T> { fn is_empty<T>(s: Stack<T>) -> bool { match s { Nil => true, -//~^ WARN pattern binding `Nil` is named the same as one of the variants of the type `Stack` +//~^ ERROR pattern binding `Nil` is named the same as one of the variants of the type `Stack` _ => false //~^ ERROR unreachable pattern } diff --git a/tests/ui/lint/issue-30302.stderr b/tests/ui/lint/issue-30302.stderr index 849ff1ebd92..baf6c0d7a59 100644 --- a/tests/ui/lint/issue-30302.stderr +++ b/tests/ui/lint/issue-30302.stderr @@ -1,10 +1,10 @@ -warning[E0170]: pattern binding `Nil` is named the same as one of the variants of the type `Stack` +error[E0170]: pattern binding `Nil` is named the same as one of the variants of the type `Stack` --> $DIR/issue-30302.rs:13:9 | LL | Nil => true, | ^^^ help: to match on the variant, qualify the path: `Stack::Nil` | - = note: `#[warn(bindings_with_variant_name)]` on by default + = note: `#[deny(bindings_with_variant_name)]` on by default error: unreachable pattern --> $DIR/issue-30302.rs:15:9 @@ -21,6 +21,6 @@ note: the lint level is defined here LL | #![deny(unreachable_patterns)] | ^^^^^^^^^^^^^^^^^^^^ -error: aborting due to previous error; 1 warning emitted +error: aborting due to 2 previous errors For more information about this error, try `rustc --explain E0170`. diff --git a/tests/ui/lint/lint-uppercase-variables.rs b/tests/ui/lint/lint-uppercase-variables.rs index d4e88aa2643..59dba536f24 100644 --- a/tests/ui/lint/lint-uppercase-variables.rs +++ b/tests/ui/lint/lint-uppercase-variables.rs @@ -21,18 +21,18 @@ fn main() { match foo::Foo::Foo { Foo => {} //~^ ERROR variable `Foo` should have a snake case name - //~^^ WARN `Foo` is named the same as one of the variants of the type `foo::Foo` + //~^^ ERROR `Foo` is named the same as one of the variants of the type `foo::Foo` //~^^^ WARN unused variable: `Foo` } let Foo = foo::Foo::Foo; //~^ ERROR variable `Foo` should have a snake case name - //~^^ WARN `Foo` is named the same as one of the variants of the type `foo::Foo` + //~^^ ERROR `Foo` is named the same as one of the variants of the type `foo::Foo` //~^^^ WARN unused variable: `Foo` fn in_param(Foo: foo::Foo) {} //~^ ERROR variable `Foo` should have a snake case name - //~^^ WARN `Foo` is named the same as one of the variants of the type `foo::Foo` + //~^^ ERROR `Foo` is named the same as one of the variants of the type `foo::Foo` //~^^^ WARN unused variable: `Foo` test(1); diff --git a/tests/ui/lint/lint-uppercase-variables.stderr b/tests/ui/lint/lint-uppercase-variables.stderr index d476d856e24..42ec9364bc6 100644 --- a/tests/ui/lint/lint-uppercase-variables.stderr +++ b/tests/ui/lint/lint-uppercase-variables.stderr @@ -1,18 +1,18 @@ -warning[E0170]: pattern binding `Foo` is named the same as one of the variants of the type `foo::Foo` +error[E0170]: pattern binding `Foo` is named the same as one of the variants of the type `foo::Foo` --> $DIR/lint-uppercase-variables.rs:22:9 | LL | Foo => {} | ^^^ help: to match on the variant, qualify the path: `foo::Foo::Foo` | - = note: `#[warn(bindings_with_variant_name)]` on by default + = note: `#[deny(bindings_with_variant_name)]` on by default -warning[E0170]: pattern binding `Foo` is named the same as one of the variants of the type `foo::Foo` +error[E0170]: pattern binding `Foo` is named the same as one of the variants of the type `foo::Foo` --> $DIR/lint-uppercase-variables.rs:28:9 | LL | let Foo = foo::Foo::Foo; | ^^^ help: to match on the variant, qualify the path: `foo::Foo::Foo` -warning[E0170]: pattern binding `Foo` is named the same as one of the variants of the type `foo::Foo` +error[E0170]: pattern binding `Foo` is named the same as one of the variants of the type `foo::Foo` --> $DIR/lint-uppercase-variables.rs:33:17 | LL | fn in_param(Foo: foo::Foo) {} @@ -85,6 +85,6 @@ error: variable `Foo` should have a snake case name LL | fn in_param(Foo: foo::Foo) {} | ^^^ help: convert the identifier to snake case (notice the capitalization): `foo` -error: aborting due to 6 previous errors; 6 warnings emitted +error: aborting due to 9 previous errors; 3 warnings emitted For more information about this error, try `rustc --explain E0170`. diff --git a/tests/ui/lint/semicolon-in-expressions-from-macros/semicolon-in-expressions-from-macros.stderr b/tests/ui/lint/semicolon-in-expressions-from-macros/semicolon-in-expressions-from-macros.stderr index 49608c20524..c6012006164 100644 --- a/tests/ui/lint/semicolon-in-expressions-from-macros/semicolon-in-expressions-from-macros.stderr +++ b/tests/ui/lint/semicolon-in-expressions-from-macros/semicolon-in-expressions-from-macros.stderr @@ -46,3 +46,140 @@ LL | let _ = #[allow(semicolon_in_expressions_from_macros)] foo!(allow_does_ warning: 3 warnings emitted +Future incompatibility report: Future breakage diagnostic: +warning: trailing semicolon in macro used in expression position + --> $DIR/semicolon-in-expressions-from-macros.rs:9:13 + | +LL | true; + | ^ +... +LL | foo!(first) + | ----------- in this macro invocation + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813> + = note: macro invocations at the end of a block are treated as expressions + = note: to ignore the value produced by the macro, add a semicolon after the invocation of `foo` +note: the lint level is defined here + --> $DIR/semicolon-in-expressions-from-macros.rs:24:13 + | +LL | #[allow(semicolon_in_expressions_from_macros)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + = note: this warning originates in the macro `foo` (in Nightly builds, run with -Z macro-backtrace for more info) + +Future breakage diagnostic: +warning: trailing semicolon in macro used in expression position + --> $DIR/semicolon-in-expressions-from-macros.rs:9:13 + | +LL | true; + | ^ +... +LL | let _ = foo!(second); + | ------------ in this macro invocation + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813> +note: the lint level is defined here + --> $DIR/semicolon-in-expressions-from-macros.rs:29:13 + | +LL | #[allow(semicolon_in_expressions_from_macros)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + = note: this warning originates in the macro `foo` (in Nightly builds, run with -Z macro-backtrace for more info) + +Future breakage diagnostic: +warning: trailing semicolon in macro used in expression position + --> $DIR/semicolon-in-expressions-from-macros.rs:9:13 + | +LL | true; + | ^ +... +LL | let _ = foo!(third); + | ----------- in this macro invocation + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813> +note: the lint level is defined here + --> $DIR/semicolon-in-expressions-from-macros.rs:32:13 + | +LL | #[allow(semicolon_in_expressions_from_macros)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + = note: this warning originates in the macro `foo` (in Nightly builds, run with -Z macro-backtrace for more info) + +Future breakage diagnostic: +warning: trailing semicolon in macro used in expression position + --> $DIR/semicolon-in-expressions-from-macros.rs:9:13 + | +LL | true; + | ^ +... +LL | let _ = foo!(fourth); + | ------------ in this macro invocation + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813> +note: the lint level is defined here + --> $DIR/semicolon-in-expressions-from-macros.rs:37:13 + | +LL | #[allow(semicolon_in_expressions_from_macros)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + = note: this warning originates in the macro `foo` (in Nightly builds, run with -Z macro-backtrace for more info) + +Future breakage diagnostic: +warning: trailing semicolon in macro used in expression position + --> $DIR/semicolon-in-expressions-from-macros.rs:9:13 + | +LL | true; + | ^ +... +LL | foo!(warn_in_block) + | ------------------- in this macro invocation + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813> + = note: macro invocations at the end of a block are treated as expressions + = note: to ignore the value produced by the macro, add a semicolon after the invocation of `foo` +note: the lint level is defined here + --> $DIR/semicolon-in-expressions-from-macros.rs:4:9 + | +LL | #![warn(semicolon_in_expressions_from_macros)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + = note: this warning originates in the macro `foo` (in Nightly builds, run with -Z macro-backtrace for more info) + +Future breakage diagnostic: +warning: trailing semicolon in macro used in expression position + --> $DIR/semicolon-in-expressions-from-macros.rs:9:13 + | +LL | true; + | ^ +... +LL | let _ = foo!(warn_in_expr); + | ------------------ in this macro invocation + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813> +note: the lint level is defined here + --> $DIR/semicolon-in-expressions-from-macros.rs:4:9 + | +LL | #![warn(semicolon_in_expressions_from_macros)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + = note: this warning originates in the macro `foo` (in Nightly builds, run with -Z macro-backtrace for more info) + +Future breakage diagnostic: +warning: trailing semicolon in macro used in expression position + --> $DIR/semicolon-in-expressions-from-macros.rs:9:13 + | +LL | true; + | ^ +... +LL | let _ = #[allow(semicolon_in_expressions_from_macros)] foo!(allow_does_not_work); + | ------------------------- in this macro invocation + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813> +note: the lint level is defined here + --> $DIR/semicolon-in-expressions-from-macros.rs:4:9 + | +LL | #![warn(semicolon_in_expressions_from_macros)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + = note: this warning originates in the macro `foo` (in Nightly builds, run with -Z macro-backtrace for more info) + diff --git a/tests/ui/lint/semicolon-in-expressions-from-macros/warn-semicolon-in-expressions-from-macros.stderr b/tests/ui/lint/semicolon-in-expressions-from-macros/warn-semicolon-in-expressions-from-macros.stderr index 16c152eb23c..0fec4996f1a 100644 --- a/tests/ui/lint/semicolon-in-expressions-from-macros/warn-semicolon-in-expressions-from-macros.stderr +++ b/tests/ui/lint/semicolon-in-expressions-from-macros/warn-semicolon-in-expressions-from-macros.stderr @@ -14,3 +14,18 @@ LL | _ => foo!() warning: 1 warning emitted +Future incompatibility report: Future breakage diagnostic: +warning: trailing semicolon in macro used in expression position + --> $DIR/warn-semicolon-in-expressions-from-macros.rs:6:13 + | +LL | true; + | ^ +... +LL | _ => foo!() + | ------ in this macro invocation + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813> + = note: `#[warn(semicolon_in_expressions_from_macros)]` on by default + = note: this warning originates in the macro `foo` (in Nightly builds, run with -Z macro-backtrace for more info) + diff --git a/tests/ui/macros/format-args-temporaries-in-write.stderr b/tests/ui/macros/format-args-temporaries-in-write.stderr index 287cd7d6704..520b2ce5052 100644 --- a/tests/ui/macros/format-args-temporaries-in-write.stderr +++ b/tests/ui/macros/format-args-temporaries-in-write.stderr @@ -1,6 +1,8 @@ error[E0597]: `mutex` does not live long enough --> $DIR/format-args-temporaries-in-write.rs:41:27 | +LL | let mutex = Mutex; + | ----- binding `mutex` declared here LL | write!(Out, "{}", mutex.lock()) /* no semicolon */ | ^^^^^^^^^^^^ | | @@ -16,6 +18,8 @@ LL | }; error[E0597]: `mutex` does not live long enough --> $DIR/format-args-temporaries-in-write.rs:47:29 | +LL | let mutex = Mutex; + | ----- binding `mutex` declared here LL | writeln!(Out, "{}", mutex.lock()) /* no semicolon */ | ^^^^^^^^^^^^ | | diff --git a/tests/ui/macros/issue-84195-lint-anon-const.stderr b/tests/ui/macros/issue-84195-lint-anon-const.stderr index 306c08b1357..29ccd17e069 100644 --- a/tests/ui/macros/issue-84195-lint-anon-const.stderr +++ b/tests/ui/macros/issue-84195-lint-anon-const.stderr @@ -18,3 +18,22 @@ LL | #![deny(semicolon_in_expressions_from_macros)] error: aborting due to previous error +Future incompatibility report: Future breakage diagnostic: +error: trailing semicolon in macro used in expression position + --> $DIR/issue-84195-lint-anon-const.rs:8:14 + | +LL | () => { 0; }; + | ^ +... +LL | let val: [u8; len!()] = []; + | ------ in this macro invocation + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813> +note: the lint level is defined here + --> $DIR/issue-84195-lint-anon-const.rs:5:9 + | +LL | #![deny(semicolon_in_expressions_from_macros)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + = note: this error originates in the macro `len` (in Nightly builds, run with -Z macro-backtrace for more info) + diff --git a/tests/ui/macros/lint-trailing-macro-call.stderr b/tests/ui/macros/lint-trailing-macro-call.stderr index 6ab121f7c06..13cecc3a31d 100644 --- a/tests/ui/macros/lint-trailing-macro-call.stderr +++ b/tests/ui/macros/lint-trailing-macro-call.stderr @@ -16,3 +16,20 @@ LL | expand_it!() warning: 1 warning emitted +Future incompatibility report: Future breakage diagnostic: +warning: trailing semicolon in macro used in expression position + --> $DIR/lint-trailing-macro-call.rs:9:25 + | +LL | #[cfg(FALSE)] 25; + | ^ +... +LL | expand_it!() + | ------------ in this macro invocation + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813> + = note: macro invocations at the end of a block are treated as expressions + = note: to ignore the value produced by the macro, add a semicolon after the invocation of `expand_it` + = note: `#[warn(semicolon_in_expressions_from_macros)]` on by default + = note: this warning originates in the macro `expand_it` (in Nightly builds, run with -Z macro-backtrace for more info) + diff --git a/tests/ui/macros/macro-context.stderr b/tests/ui/macros/macro-context.stderr index f597c398b7c..7785f415946 100644 --- a/tests/ui/macros/macro-context.stderr +++ b/tests/ui/macros/macro-context.stderr @@ -82,3 +82,18 @@ error: aborting due to 6 previous errors; 1 warning emitted Some errors have detailed explanations: E0412, E0425. For more information about an error, try `rustc --explain E0412`. +Future incompatibility report: Future breakage diagnostic: +warning: trailing semicolon in macro used in expression position + --> $DIR/macro-context.rs:3:15 + | +LL | () => ( i ; typeof ); + | ^ +... +LL | let i = m!(); + | ---- in this macro invocation + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813> + = note: `#[warn(semicolon_in_expressions_from_macros)]` on by default + = note: this warning originates in the macro `m` (in Nightly builds, run with -Z macro-backtrace for more info) + diff --git a/tests/ui/macros/macro-in-expression-context.stderr b/tests/ui/macros/macro-in-expression-context.stderr index 36aba8aa08a..3f492b141a5 100644 --- a/tests/ui/macros/macro-in-expression-context.stderr +++ b/tests/ui/macros/macro-in-expression-context.stderr @@ -31,3 +31,20 @@ LL | foo!() error: aborting due to previous error; 1 warning emitted +Future incompatibility report: Future breakage diagnostic: +warning: trailing semicolon in macro used in expression position + --> $DIR/macro-in-expression-context.rs:5:29 + | +LL | assert_eq!("A", "A"); + | ^ +... +LL | foo!() + | ------ in this macro invocation + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813> + = note: macro invocations at the end of a block are treated as expressions + = note: to ignore the value produced by the macro, add a semicolon after the invocation of `foo` + = note: `#[warn(semicolon_in_expressions_from_macros)]` on by default + = note: this warning originates in the macro `foo` (in Nightly builds, run with -Z macro-backtrace for more info) + diff --git a/tests/ui/match/issue-74050-end-span.stderr b/tests/ui/match/issue-74050-end-span.stderr index 59c091e44eb..0b3425f2b1a 100644 --- a/tests/ui/match/issue-74050-end-span.stderr +++ b/tests/ui/match/issue-74050-end-span.stderr @@ -4,6 +4,7 @@ error[E0597]: `arg` does not live long enough LL | let _arg = match args.next() { | ---- borrow later stored here LL | Some(arg) => { + | --- binding `arg` declared here LL | match arg.to_str() { | ^^^^^^^^^^^^ borrowed value does not live long enough ... diff --git a/tests/ui/methods/method-not-found-but-doc-alias.rs b/tests/ui/methods/method-not-found-but-doc-alias.rs new file mode 100644 index 00000000000..9c6d1002923 --- /dev/null +++ b/tests/ui/methods/method-not-found-but-doc-alias.rs @@ -0,0 +1,11 @@ +struct Foo; + +impl Foo { + #[doc(alias = "quux")] + fn bar(&self) {} +} + +fn main() { + Foo.quux(); + //~^ ERROR no method named `quux` found for struct `Foo` in the current scope +} diff --git a/tests/ui/methods/method-not-found-but-doc-alias.stderr b/tests/ui/methods/method-not-found-but-doc-alias.stderr new file mode 100644 index 00000000000..5102a452f0c --- /dev/null +++ b/tests/ui/methods/method-not-found-but-doc-alias.stderr @@ -0,0 +1,12 @@ +error[E0599]: no method named `quux` found for struct `Foo` in the current scope + --> $DIR/method-not-found-but-doc-alias.rs:9:9 + | +LL | struct Foo; + | ---------- method `quux` not found for this struct +... +LL | Foo.quux(); + | ^^^^ help: there is a method with a similar name: `bar` + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0599`. diff --git a/tests/ui/mismatched_types/closure-arg-type-mismatch-issue-45727.fixed b/tests/ui/mismatched_types/closure-arg-type-mismatch-issue-45727.fixed new file mode 100644 index 00000000000..6315fcca2b8 --- /dev/null +++ b/tests/ui/mismatched_types/closure-arg-type-mismatch-issue-45727.fixed @@ -0,0 +1,5 @@ +// run-rustfix +fn main() { + let _ = (-10..=10).find(|x: &i32| x.signum() == 0); //~ ERROR type mismatch in closure arguments + let _ = (-10..=10).find(|x: &i32| x.signum() == 0); //~ ERROR type mismatch in closure arguments +} diff --git a/tests/ui/mismatched_types/closure-arg-type-mismatch-issue-45727.rs b/tests/ui/mismatched_types/closure-arg-type-mismatch-issue-45727.rs new file mode 100644 index 00000000000..c12c5362efc --- /dev/null +++ b/tests/ui/mismatched_types/closure-arg-type-mismatch-issue-45727.rs @@ -0,0 +1,5 @@ +// run-rustfix +fn main() { + let _ = (-10..=10).find(|x: i32| x.signum() == 0); //~ ERROR type mismatch in closure arguments + let _ = (-10..=10).find(|x: &&&i32| x.signum() == 0); //~ ERROR type mismatch in closure arguments +} diff --git a/tests/ui/mismatched_types/closure-arg-type-mismatch-issue-45727.stderr b/tests/ui/mismatched_types/closure-arg-type-mismatch-issue-45727.stderr new file mode 100644 index 00000000000..fb8af4bb7dd --- /dev/null +++ b/tests/ui/mismatched_types/closure-arg-type-mismatch-issue-45727.stderr @@ -0,0 +1,38 @@ +error[E0631]: type mismatch in closure arguments + --> $DIR/closure-arg-type-mismatch-issue-45727.rs:3:24 + | +LL | let _ = (-10..=10).find(|x: i32| x.signum() == 0); + | ^^^^ -------- found signature defined here + | | + | expected due to this + | + = note: expected closure signature `for<'a> fn(&'a {integer}) -> _` + found closure signature `fn(i32) -> _` +note: required by a bound in `find` + --> $SRC_DIR/core/src/iter/traits/iterator.rs:LL:COL +help: consider borrowing the argument + | +LL | let _ = (-10..=10).find(|x: &i32| x.signum() == 0); + | + + +error[E0631]: type mismatch in closure arguments + --> $DIR/closure-arg-type-mismatch-issue-45727.rs:4:24 + | +LL | let _ = (-10..=10).find(|x: &&&i32| x.signum() == 0); + | ^^^^ ----------- found signature defined here + | | + | expected due to this + | + = note: expected closure signature `for<'a> fn(&'a {integer}) -> _` + found closure signature `for<'a, 'b, 'c> fn(&'a &'b &'c i32) -> _` +note: required by a bound in `find` + --> $SRC_DIR/core/src/iter/traits/iterator.rs:LL:COL +help: do not borrow the argument + | +LL - let _ = (-10..=10).find(|x: &&&i32| x.signum() == 0); +LL + let _ = (-10..=10).find(|x: &i32| x.signum() == 0); + | + +error: aborting due to 2 previous errors + +For more information about this error, try `rustc --explain E0631`. diff --git a/tests/ui/mismatched_types/closure-arg-type-mismatch.stderr b/tests/ui/mismatched_types/closure-arg-type-mismatch.stderr index fab9b7edc0c..811ff0533f0 100644 --- a/tests/ui/mismatched_types/closure-arg-type-mismatch.stderr +++ b/tests/ui/mismatched_types/closure-arg-type-mismatch.stderr @@ -2,16 +2,18 @@ error[E0631]: type mismatch in closure arguments --> $DIR/closure-arg-type-mismatch.rs:3:14 | LL | a.iter().map(|_: (u32, u32)| 45); - | ^^^ --------------- - | | | | - | | | help: consider borrowing the argument: `&(u32, u32)` - | | found signature defined here + | ^^^ --------------- found signature defined here + | | | expected due to this | = note: expected closure signature `fn(&(u32, u32)) -> _` found closure signature `fn((u32, u32)) -> _` note: required by a bound in `map` --> $SRC_DIR/core/src/iter/traits/iterator.rs:LL:COL +help: consider borrowing the argument + | +LL | a.iter().map(|_: &(u32, u32)| 45); + | + error[E0631]: type mismatch in closure arguments --> $DIR/closure-arg-type-mismatch.rs:4:14 diff --git a/tests/ui/mismatched_types/issue-36053-2.stderr b/tests/ui/mismatched_types/issue-36053-2.stderr index 72fb0e4d774..a6764a1dc6d 100644 --- a/tests/ui/mismatched_types/issue-36053-2.stderr +++ b/tests/ui/mismatched_types/issue-36053-2.stderr @@ -2,16 +2,18 @@ error[E0631]: type mismatch in closure arguments --> $DIR/issue-36053-2.rs:7:32 | LL | once::<&str>("str").fuse().filter(|a: &str| true).count(); - | ^^^^^^ --------- - | | | | - | | | help: consider borrowing the argument: `&&str` - | | found signature defined here + | ^^^^^^ --------- found signature defined here + | | | expected due to this | = note: expected closure signature `for<'a> fn(&'a &str) -> _` found closure signature `for<'a> fn(&'a str) -> _` note: required by a bound in `filter` --> $SRC_DIR/core/src/iter/traits/iterator.rs:LL:COL +help: consider borrowing the argument + | +LL | once::<&str>("str").fuse().filter(|a: &&str| true).count(); + | + error[E0599]: the method `count` exists for struct `Filter<Fuse<Once<&str>>, [closure@issue-36053-2.rs:7:39]>`, but its trait bounds were not satisfied --> $DIR/issue-36053-2.rs:7:55 diff --git a/tests/ui/moves/move-fn-self-receiver.stderr b/tests/ui/moves/move-fn-self-receiver.stderr index 7f69e5dcfb7..91d237b1d1a 100644 --- a/tests/ui/moves/move-fn-self-receiver.stderr +++ b/tests/ui/moves/move-fn-self-receiver.stderr @@ -75,6 +75,8 @@ LL | fn use_pin_box_self(self: Pin<Box<Self>>) {} error[E0505]: cannot move out of `mut_foo` because it is borrowed --> $DIR/move-fn-self-receiver.rs:50:5 | +LL | let mut mut_foo = Foo; + | ----------- binding `mut_foo` declared here LL | let ret = mut_foo.use_mut_self(); | ---------------------- borrow of `mut_foo` occurs here LL | mut_foo; diff --git a/tests/ui/mut/mut-pattern-internal-mutability.stderr b/tests/ui/mut/mut-pattern-internal-mutability.stderr index 6583546aa5c..5f2074edb12 100644 --- a/tests/ui/mut/mut-pattern-internal-mutability.stderr +++ b/tests/ui/mut/mut-pattern-internal-mutability.stderr @@ -13,9 +13,9 @@ error[E0506]: cannot assign to `*foo` because it is borrowed --> $DIR/mut-pattern-internal-mutability.rs:13:5 | LL | let &mut ref x = foo; - | ----- borrow of `*foo` occurs here + | ----- `*foo` is borrowed here LL | *foo += 1; - | ^^^^^^^^^ assignment to borrowed `*foo` occurs here + | ^^^^^^^^^ `*foo` is assigned to here but it was already borrowed LL | drop(x); | - borrow later used here diff --git a/tests/ui/nll/borrowed-local-error.stderr b/tests/ui/nll/borrowed-local-error.stderr index d629caa4353..1cca4077d82 100644 --- a/tests/ui/nll/borrowed-local-error.stderr +++ b/tests/ui/nll/borrowed-local-error.stderr @@ -4,6 +4,7 @@ error[E0597]: `v` does not live long enough LL | let x = gimme({ | ----- borrow later used by call LL | let v = (22,); + | - binding `v` declared here LL | &v | ^^ borrowed value does not live long enough LL | diff --git a/tests/ui/nll/borrowed-match-issue-45045.stderr b/tests/ui/nll/borrowed-match-issue-45045.stderr index 9d4682667dd..33e3eb79796 100644 --- a/tests/ui/nll/borrowed-match-issue-45045.stderr +++ b/tests/ui/nll/borrowed-match-issue-45045.stderr @@ -2,7 +2,7 @@ error[E0503]: cannot use `e` because it was mutably borrowed --> $DIR/borrowed-match-issue-45045.rs:12:11 | LL | let f = &mut e; - | ------ borrow of `e` occurs here + | ------ `e` is borrowed here LL | let g = f; LL | match e { | ^ use of borrowed `e` diff --git a/tests/ui/nll/capture-ref-in-struct.stderr b/tests/ui/nll/capture-ref-in-struct.stderr index cdfe7f6db82..84b7ecf2f7d 100644 --- a/tests/ui/nll/capture-ref-in-struct.stderr +++ b/tests/ui/nll/capture-ref-in-struct.stderr @@ -1,6 +1,9 @@ error[E0597]: `y` does not live long enough --> $DIR/capture-ref-in-struct.rs:18:16 | +LL | let y = 22; + | - binding `y` declared here +... LL | y: &y, | ^^ borrowed value does not live long enough ... diff --git a/tests/ui/nll/closure-access-spans.stderr b/tests/ui/nll/closure-access-spans.stderr index 0a09353b8ec..035dd5a5610 100644 --- a/tests/ui/nll/closure-access-spans.stderr +++ b/tests/ui/nll/closure-access-spans.stderr @@ -38,7 +38,7 @@ error[E0503]: cannot use `x` because it was mutably borrowed --> $DIR/closure-access-spans.rs:23:13 | LL | let r = &mut x; - | ------ borrow of `x` occurs here + | ------ `x` is borrowed here LL | move || x; | ^ use of borrowed `x` LL | r.use_ref(); @@ -47,6 +47,8 @@ LL | r.use_ref(); error[E0505]: cannot move out of `x` because it is borrowed --> $DIR/closure-access-spans.rs:29:5 | +LL | fn closure_move_capture_conflict(mut x: String) { + | ----- binding `x` declared here LL | let r = &x; | -- borrow of `x` occurs here LL | || x; diff --git a/tests/ui/nll/closure-borrow-spans.stderr b/tests/ui/nll/closure-borrow-spans.stderr index bada4e1b84b..cf0df5834cc 100644 --- a/tests/ui/nll/closure-borrow-spans.stderr +++ b/tests/ui/nll/closure-borrow-spans.stderr @@ -40,9 +40,9 @@ error[E0506]: cannot assign to `x` because it is borrowed LL | let f = || x; | -- - borrow occurs due to use in closure | | - | borrow of `x` occurs here + | `x` is borrowed here LL | x = 1; - | ^^^^^ assignment to borrowed `x` occurs here + | ^^^^^ `x` is assigned to here but it was already borrowed LL | f.use_ref(); | ----------- borrow later used here @@ -52,7 +52,7 @@ error[E0503]: cannot use `x` because it was mutably borrowed LL | let f = || x = 0; | -- - borrow occurs due to use of `x` in closure | | - | borrow of `x` occurs here + | `x` is borrowed here LL | let y = x; | ^ use of borrowed `x` LL | f.use_ref(); @@ -100,9 +100,9 @@ error[E0506]: cannot assign to `x` because it is borrowed LL | let f = || x = 0; | -- - borrow occurs due to use in closure | | - | borrow of `x` occurs here + | `x` is borrowed here LL | x = 1; - | ^^^^^ assignment to borrowed `x` occurs here + | ^^^^^ `x` is assigned to here but it was already borrowed LL | f.use_ref(); | ----------- borrow later used here @@ -160,9 +160,9 @@ error[E0506]: cannot assign to `*x` because it is borrowed LL | let f = || *x = 0; | -- -- borrow occurs due to use in closure | | - | borrow of `*x` occurs here + | `*x` is borrowed here LL | *x = 1; - | ^^^^^^ assignment to borrowed `*x` occurs here + | ^^^^^^ `*x` is assigned to here but it was already borrowed LL | f.use_ref(); | ----------- borrow later used here diff --git a/tests/ui/nll/closure-requirements/escape-argument.stderr b/tests/ui/nll/closure-requirements/escape-argument.stderr index f67c312b946..5a8462d4dc5 100644 --- a/tests/ui/nll/closure-requirements/escape-argument.stderr +++ b/tests/ui/nll/closure-requirements/escape-argument.stderr @@ -21,6 +21,9 @@ LL | fn test() { error[E0597]: `y` does not live long enough --> $DIR/escape-argument.rs:27:25 | +LL | let y = 22; + | - binding `y` declared here +LL | let mut closure = expect_sig(|p, y| *p = y); LL | closure(&mut p, &y); | ^^ borrowed value does not live long enough LL | diff --git a/tests/ui/nll/closure-requirements/propagate-approximated-shorter-to-static-comparing-against-free.stderr b/tests/ui/nll/closure-requirements/propagate-approximated-shorter-to-static-comparing-against-free.stderr index 7991abeb7a8..721cd45ded9 100644 --- a/tests/ui/nll/closure-requirements/propagate-approximated-shorter-to-static-comparing-against-free.stderr +++ b/tests/ui/nll/closure-requirements/propagate-approximated-shorter-to-static-comparing-against-free.stderr @@ -53,6 +53,8 @@ LL | fn case2() { error[E0597]: `a` does not live long enough --> $DIR/propagate-approximated-shorter-to-static-comparing-against-free.rs:30:26 | +LL | let a = 0; + | - binding `a` declared here LL | let cell = Cell::new(&a); | ^^ borrowed value does not live long enough ... diff --git a/tests/ui/nll/closure-use-spans.stderr b/tests/ui/nll/closure-use-spans.stderr index ad928f1bbc9..0e27e5f5f7c 100644 --- a/tests/ui/nll/closure-use-spans.stderr +++ b/tests/ui/nll/closure-use-spans.stderr @@ -2,9 +2,9 @@ error[E0506]: cannot assign to `x` because it is borrowed --> $DIR/closure-use-spans.rs:5:5 | LL | let y = &x; - | -- borrow of `x` occurs here + | -- `x` is borrowed here LL | x = 0; - | ^^^^^ assignment to borrowed `x` occurs here + | ^^^^^ `x` is assigned to here but it was already borrowed LL | || *y; | -- borrow later captured here by closure @@ -12,9 +12,9 @@ error[E0506]: cannot assign to `x` because it is borrowed --> $DIR/closure-use-spans.rs:11:5 | LL | let y = &mut x; - | ------ borrow of `x` occurs here + | ------ `x` is borrowed here LL | x = 0; - | ^^^^^ assignment to borrowed `x` occurs here + | ^^^^^ `x` is assigned to here but it was already borrowed LL | || *y = 1; | -- borrow later captured here by closure @@ -22,9 +22,9 @@ error[E0506]: cannot assign to `x` because it is borrowed --> $DIR/closure-use-spans.rs:17:5 | LL | let y = &x; - | -- borrow of `x` occurs here + | -- `x` is borrowed here LL | x = 0; - | ^^^^^ assignment to borrowed `x` occurs here + | ^^^^^ `x` is assigned to here but it was already borrowed LL | move || *y; | -- borrow later captured here by closure diff --git a/tests/ui/nll/do-not-ignore-lifetime-bounds-in-copy-proj.stderr b/tests/ui/nll/do-not-ignore-lifetime-bounds-in-copy-proj.stderr index 65be3b37e0e..862c925b468 100644 --- a/tests/ui/nll/do-not-ignore-lifetime-bounds-in-copy-proj.stderr +++ b/tests/ui/nll/do-not-ignore-lifetime-bounds-in-copy-proj.stderr @@ -1,6 +1,8 @@ error[E0597]: `s` does not live long enough --> $DIR/do-not-ignore-lifetime-bounds-in-copy-proj.rs:9:18 | +LL | let s = 2; + | - binding `s` declared here LL | let a = (Foo(&s),); | ^^ borrowed value does not live long enough LL | drop(a.0); diff --git a/tests/ui/nll/do-not-ignore-lifetime-bounds-in-copy.stderr b/tests/ui/nll/do-not-ignore-lifetime-bounds-in-copy.stderr index b811ba4fd0c..ebaf6d1244d 100644 --- a/tests/ui/nll/do-not-ignore-lifetime-bounds-in-copy.stderr +++ b/tests/ui/nll/do-not-ignore-lifetime-bounds-in-copy.stderr @@ -1,6 +1,8 @@ error[E0597]: `s` does not live long enough --> $DIR/do-not-ignore-lifetime-bounds-in-copy.rs:8:17 | +LL | let s = 2; + | - binding `s` declared here LL | let a = Foo(&s); | ^^ borrowed value does not live long enough LL | drop(a); diff --git a/tests/ui/nll/dont-print-desugared.stderr b/tests/ui/nll/dont-print-desugared.stderr index fad6121cbca..289b246e663 100644 --- a/tests/ui/nll/dont-print-desugared.stderr +++ b/tests/ui/nll/dont-print-desugared.stderr @@ -10,6 +10,7 @@ error[E0597]: `y` does not live long enough LL | for ref mut d in v { | - a temporary with access to the borrow is created here ... LL | let y = (); + | - binding `y` declared here LL | *d = D(&y); | ^^ borrowed value does not live long enough LL | } diff --git a/tests/ui/nll/drop-no-may-dangle.stderr b/tests/ui/nll/drop-no-may-dangle.stderr index cb280880950..0ddb7adbb38 100644 --- a/tests/ui/nll/drop-no-may-dangle.stderr +++ b/tests/ui/nll/drop-no-may-dangle.stderr @@ -2,10 +2,10 @@ error[E0506]: cannot assign to `v[_]` because it is borrowed --> $DIR/drop-no-may-dangle.rs:18:9 | LL | let p: WrapMayNotDangle<&usize> = WrapMayNotDangle { value: &v[0] }; - | ----- borrow of `v[_]` occurs here + | ----- `v[_]` is borrowed here ... LL | v[0] += 1; - | ^^^^^^^^^ assignment to borrowed `v[_]` occurs here + | ^^^^^^^^^ `v[_]` is assigned to here but it was already borrowed ... LL | } | - borrow might be used here, when `p` is dropped and runs the `Drop` code for type `WrapMayNotDangle` @@ -14,10 +14,10 @@ error[E0506]: cannot assign to `v[_]` because it is borrowed --> $DIR/drop-no-may-dangle.rs:21:5 | LL | let p: WrapMayNotDangle<&usize> = WrapMayNotDangle { value: &v[0] }; - | ----- borrow of `v[_]` occurs here + | ----- `v[_]` is borrowed here ... LL | v[0] += 1; - | ^^^^^^^^^ assignment to borrowed `v[_]` occurs here + | ^^^^^^^^^ `v[_]` is assigned to here but it was already borrowed LL | } | - borrow might be used here, when `p` is dropped and runs the `Drop` code for type `WrapMayNotDangle` diff --git a/tests/ui/nll/guarantor-issue-46974.stderr b/tests/ui/nll/guarantor-issue-46974.stderr index 8854dd8d68c..7edc3dcc5cd 100644 --- a/tests/ui/nll/guarantor-issue-46974.stderr +++ b/tests/ui/nll/guarantor-issue-46974.stderr @@ -2,10 +2,10 @@ error[E0506]: cannot assign to `*s` because it is borrowed --> $DIR/guarantor-issue-46974.rs:7:5 | LL | let t = &mut *s; // this borrow should last for the entire function - | ------- borrow of `*s` occurs here + | ------- `*s` is borrowed here LL | let x = &t.0; LL | *s = (2,); - | ^^^^^^^^^ assignment to borrowed `*s` occurs here + | ^^^^^^^^^ `*s` is assigned to here but it was already borrowed LL | *x | -- borrow later used here diff --git a/tests/ui/nll/issue-27282-move-ref-mut-into-guard.stderr b/tests/ui/nll/issue-27282-move-ref-mut-into-guard.stderr index 45119018d4e..4a512560c87 100644 --- a/tests/ui/nll/issue-27282-move-ref-mut-into-guard.stderr +++ b/tests/ui/nll/issue-27282-move-ref-mut-into-guard.stderr @@ -4,7 +4,7 @@ error[E0507]: cannot move out of `foo` in pattern guard LL | if { (|| { let bar = foo; bar.take() })(); false } => {}, | ^^ --- move occurs because `foo` has type `&mut Option<&i32>`, which does not implement the `Copy` trait | | - | move out of `foo` occurs here + | `foo` is moved here | = note: variables bound in patterns cannot be moved from until after the end of the pattern guard @@ -14,7 +14,7 @@ error[E0507]: cannot move out of `foo` in pattern guard LL | if let Some(()) = { (|| { let bar = foo; bar.take() })(); None } => {}, | ^^ --- move occurs because `foo` has type `&mut Option<&i32>`, which does not implement the `Copy` trait | | - | move out of `foo` occurs here + | `foo` is moved here | = note: variables bound in patterns cannot be moved from until after the end of the pattern guard diff --git a/tests/ui/nll/issue-27282-mutation-in-guard.stderr b/tests/ui/nll/issue-27282-mutation-in-guard.stderr index 1ba696593af..0b5d723172c 100644 --- a/tests/ui/nll/issue-27282-mutation-in-guard.stderr +++ b/tests/ui/nll/issue-27282-mutation-in-guard.stderr @@ -4,7 +4,7 @@ error[E0507]: cannot move out of `foo` in pattern guard LL | (|| { let bar = foo; bar.take() })(); | ^^ --- move occurs because `foo` has type `&mut Option<&i32>`, which does not implement the `Copy` trait | | - | move out of `foo` occurs here + | `foo` is moved here | = note: variables bound in patterns cannot be moved from until after the end of the pattern guard @@ -14,7 +14,7 @@ error[E0507]: cannot move out of `foo` in pattern guard LL | (|| { let bar = foo; bar.take() })(); | ^^ --- move occurs because `foo` has type `&mut Option<&i32>`, which does not implement the `Copy` trait | | - | move out of `foo` occurs here + | `foo` is moved here | = note: variables bound in patterns cannot be moved from until after the end of the pattern guard diff --git a/tests/ui/nll/issue-27868.stderr b/tests/ui/nll/issue-27868.stderr index e0b3b5494d0..204eda3d267 100644 --- a/tests/ui/nll/issue-27868.stderr +++ b/tests/ui/nll/issue-27868.stderr @@ -4,10 +4,10 @@ error[E0506]: cannot assign to `vecvec` because it is borrowed LL | vecvec[0] += { | ------ | | - | _____borrow of `vecvec` occurs here + | _____`vecvec` is borrowed here | | LL | | vecvec = vec![]; - | | ^^^^^^ assignment to borrowed `vecvec` occurs here + | | ^^^^^^ `vecvec` is assigned to here but it was already borrowed LL | | LL | | 0 LL | | }; diff --git a/tests/ui/nll/issue-46036.stderr b/tests/ui/nll/issue-46036.stderr index e6e95ee6136..f337e234550 100644 --- a/tests/ui/nll/issue-46036.stderr +++ b/tests/ui/nll/issue-46036.stderr @@ -1,6 +1,8 @@ error[E0597]: `a` does not live long enough --> $DIR/issue-46036.rs:8:24 | +LL | let a = 3; + | - binding `a` declared here LL | let foo = Foo { x: &a }; | ^^ | | diff --git a/tests/ui/nll/issue-48803.stderr b/tests/ui/nll/issue-48803.stderr index 2f94039c0c3..e24606e0b53 100644 --- a/tests/ui/nll/issue-48803.stderr +++ b/tests/ui/nll/issue-48803.stderr @@ -2,10 +2,10 @@ error[E0506]: cannot assign to `x` because it is borrowed --> $DIR/issue-48803.rs:10:5 | LL | let y = &x; - | -- borrow of `x` occurs here + | -- `x` is borrowed here ... LL | x = "modified"; - | ^^^^^^^^^^^^^^ assignment to borrowed `x` occurs here + | ^^^^^^^^^^^^^^ `x` is assigned to here but it was already borrowed LL | LL | println!("{}", w); // prints "modified" | - borrow later used here diff --git a/tests/ui/nll/issue-52534-2.stderr b/tests/ui/nll/issue-52534-2.stderr index ac385e056b9..35d39bb6e90 100644 --- a/tests/ui/nll/issue-52534-2.stderr +++ b/tests/ui/nll/issue-52534-2.stderr @@ -1,6 +1,8 @@ error[E0597]: `x` does not live long enough --> $DIR/issue-52534-2.rs:6:13 | +LL | let x = 32; + | - binding `x` declared here LL | y = &x | ^^ borrowed value does not live long enough LL | diff --git a/tests/ui/nll/issue-52663-trait-object.stderr b/tests/ui/nll/issue-52663-trait-object.stderr index 5cedea6e665..338f6484132 100644 --- a/tests/ui/nll/issue-52663-trait-object.stderr +++ b/tests/ui/nll/issue-52663-trait-object.stderr @@ -1,6 +1,8 @@ error[E0597]: `tmp0` does not live long enough --> $DIR/issue-52663-trait-object.rs:12:20 | +LL | let tmp0 = 3; + | ---- binding `tmp0` declared here LL | let tmp1 = &tmp0; | ^^^^^ borrowed value does not live long enough LL | Box::new(tmp1) as Box<dyn Foo + '_> diff --git a/tests/ui/nll/issue-54382-use-span-of-tail-of-block.stderr b/tests/ui/nll/issue-54382-use-span-of-tail-of-block.stderr index d8f43cbc92a..4a32c777a86 100644 --- a/tests/ui/nll/issue-54382-use-span-of-tail-of-block.stderr +++ b/tests/ui/nll/issue-54382-use-span-of-tail-of-block.stderr @@ -1,6 +1,9 @@ error[E0597]: `_thing1` does not live long enough --> $DIR/issue-54382-use-span-of-tail-of-block.rs:7:29 | +LL | let mut _thing1 = D(Box::new("thing1")); + | ----------- binding `_thing1` declared here +... LL | D("other").next(&_thing1) | ----------------^^^^^^^^- | | | diff --git a/tests/ui/nll/issue-54556-niconii.stderr b/tests/ui/nll/issue-54556-niconii.stderr index a8e1edc5497..d41d462f2bc 100644 --- a/tests/ui/nll/issue-54556-niconii.stderr +++ b/tests/ui/nll/issue-54556-niconii.stderr @@ -1,6 +1,9 @@ error[E0597]: `counter` does not live long enough --> $DIR/issue-54556-niconii.rs:22:20 | +LL | let counter = Mutex; + | ------- binding `counter` declared here +LL | LL | if let Ok(_) = counter.lock() { } | ^^^^^^^^^^^^^^ | | diff --git a/tests/ui/nll/issue-54556-stephaneyfx.stderr b/tests/ui/nll/issue-54556-stephaneyfx.stderr index 036a7a0abfd..f9e82cb003f 100644 --- a/tests/ui/nll/issue-54556-stephaneyfx.stderr +++ b/tests/ui/nll/issue-54556-stephaneyfx.stderr @@ -1,6 +1,8 @@ error[E0597]: `stmt` does not live long enough --> $DIR/issue-54556-stephaneyfx.rs:27:21 | +LL | let stmt = Statement; + | ---- binding `stmt` declared here LL | let rows = Rows(&stmt); | ^^^^^ borrowed value does not live long enough LL | rows.map(|row| row).next() diff --git a/tests/ui/nll/issue-54556-temps-in-tail-diagnostic.stderr b/tests/ui/nll/issue-54556-temps-in-tail-diagnostic.stderr index 92f5ffdf388..4eae9fdcde0 100644 --- a/tests/ui/nll/issue-54556-temps-in-tail-diagnostic.stderr +++ b/tests/ui/nll/issue-54556-temps-in-tail-diagnostic.stderr @@ -1,6 +1,9 @@ error[E0597]: `_thing1` does not live long enough --> $DIR/issue-54556-temps-in-tail-diagnostic.rs:5:11 | +LL | let mut _thing1 = D(Box::new("thing1")); + | ----------- binding `_thing1` declared here +LL | // D("other").next(&_thing1).end() LL | D(&_thing1).end() | --^^^^^^^^- | | | diff --git a/tests/ui/nll/issue-54556-used-vs-unused-tails.stderr b/tests/ui/nll/issue-54556-used-vs-unused-tails.stderr index 25226e29673..a2a7a848654 100644 --- a/tests/ui/nll/issue-54556-used-vs-unused-tails.stderr +++ b/tests/ui/nll/issue-54556-used-vs-unused-tails.stderr @@ -2,11 +2,12 @@ error[E0597]: `_t1` does not live long enough --> $DIR/issue-54556-used-vs-unused-tails.rs:10:55 | LL | { let mut _t1 = D(Box::new("t1")); D(&_t1).end() } ; // suggest `;` - | --^^^^- - - ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `D` - | | | | - | | | `_t1` dropped here while still borrowed - | | borrowed value does not live long enough - | a temporary with access to the borrow is created here ... + | ------- --^^^^- - - ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `D` + | | | | | + | | | | `_t1` dropped here while still borrowed + | | | borrowed value does not live long enough + | | a temporary with access to the borrow is created here ... + | binding `_t1` declared here | help: consider adding semicolon after the expression so its temporaries are dropped sooner, before the local variables declared by the block are dropped | @@ -17,11 +18,12 @@ error[E0597]: `_t1` does not live long enough --> $DIR/issue-54556-used-vs-unused-tails.rs:13:55 | LL | { { let mut _t1 = D(Box::new("t1")); D(&_t1).end() } } ; // suggest `;` - | --^^^^- - - ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `D` - | | | | - | | | `_t1` dropped here while still borrowed - | | borrowed value does not live long enough - | a temporary with access to the borrow is created here ... + | ------- --^^^^- - - ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `D` + | | | | | + | | | | `_t1` dropped here while still borrowed + | | | borrowed value does not live long enough + | | a temporary with access to the borrow is created here ... + | binding `_t1` declared here | help: consider adding semicolon after the expression so its temporaries are dropped sooner, before the local variables declared by the block are dropped | @@ -32,11 +34,12 @@ error[E0597]: `_t1` does not live long enough --> $DIR/issue-54556-used-vs-unused-tails.rs:16:55 | LL | { { let mut _t1 = D(Box::new("t1")); D(&_t1).end() }; } // suggest `;` - | --^^^^- -- ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `D` - | | | | - | | | `_t1` dropped here while still borrowed - | | borrowed value does not live long enough - | a temporary with access to the borrow is created here ... + | ------- --^^^^- -- ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `D` + | | | | | + | | | | `_t1` dropped here while still borrowed + | | | borrowed value does not live long enough + | | a temporary with access to the borrow is created here ... + | binding `_t1` declared here | help: consider adding semicolon after the expression so its temporaries are dropped sooner, before the local variables declared by the block are dropped | @@ -47,11 +50,12 @@ error[E0597]: `_t1` does not live long enough --> $DIR/issue-54556-used-vs-unused-tails.rs:19:55 | LL | let _ = { let mut _t1 = D(Box::new("t1")); D(&_t1).end() } ; // suggest `;` - | --^^^^- - - ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `D` - | | | | - | | | `_t1` dropped here while still borrowed - | | borrowed value does not live long enough - | a temporary with access to the borrow is created here ... + | ------- --^^^^- - - ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `D` + | | | | | + | | | | `_t1` dropped here while still borrowed + | | | borrowed value does not live long enough + | | a temporary with access to the borrow is created here ... + | binding `_t1` declared here | help: consider adding semicolon after the expression so its temporaries are dropped sooner, before the local variables declared by the block are dropped | @@ -62,11 +66,12 @@ error[E0597]: `_t1` does not live long enough --> $DIR/issue-54556-used-vs-unused-tails.rs:22:55 | LL | let _u = { let mut _t1 = D(Box::new("t1")); D(&_t1).unit() } ; // suggest `;` - | --^^^^- - - ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `D` - | | | | - | | | `_t1` dropped here while still borrowed - | | borrowed value does not live long enough - | a temporary with access to the borrow is created here ... + | ------- --^^^^- - - ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `D` + | | | | | + | | | | `_t1` dropped here while still borrowed + | | | borrowed value does not live long enough + | | a temporary with access to the borrow is created here ... + | binding `_t1` declared here | help: consider adding semicolon after the expression so its temporaries are dropped sooner, before the local variables declared by the block are dropped | @@ -77,11 +82,12 @@ error[E0597]: `_t1` does not live long enough --> $DIR/issue-54556-used-vs-unused-tails.rs:25:55 | LL | let _x = { let mut _t1 = D(Box::new("t1")); D(&_t1).end() } ; // `let x = ...; x` - | --^^^^- - - ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `D` - | | | | - | | | `_t1` dropped here while still borrowed - | | borrowed value does not live long enough - | a temporary with access to the borrow is created here ... + | ------- --^^^^- - - ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `D` + | | | | | + | | | | `_t1` dropped here while still borrowed + | | | borrowed value does not live long enough + | | a temporary with access to the borrow is created here ... + | binding `_t1` declared here | = note: the temporary is part of an expression at the end of a block; consider forcing this temporary to be dropped sooner, before the block's local variables are dropped @@ -94,11 +100,12 @@ error[E0597]: `_t1` does not live long enough --> $DIR/issue-54556-used-vs-unused-tails.rs:30:55 | LL | _y = { let mut _t1 = D(Box::new("t1")); D(&_t1).end() } ; // `let x = ...; x` - | --^^^^- - - ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `D` - | | | | - | | | `_t1` dropped here while still borrowed - | | borrowed value does not live long enough - | a temporary with access to the borrow is created here ... + | ------- --^^^^- - - ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `D` + | | | | | + | | | | `_t1` dropped here while still borrowed + | | | borrowed value does not live long enough + | | a temporary with access to the borrow is created here ... + | binding `_t1` declared here | = note: the temporary is part of an expression at the end of a block; consider forcing this temporary to be dropped sooner, before the block's local variables are dropped @@ -111,12 +118,13 @@ error[E0597]: `_t1` does not live long enough --> $DIR/issue-54556-used-vs-unused-tails.rs:37:55 | LL | fn f_local_ref() { let mut _t1 = D(Box::new("t1")); D(&_t1).unit() } // suggest `;` - | --^^^^- - - | | | | - | | | `_t1` dropped here while still borrowed - | | | ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `D` - | | borrowed value does not live long enough - | a temporary with access to the borrow is created here ... + | ------- --^^^^- - + | | | | | + | | | | `_t1` dropped here while still borrowed + | | | | ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `D` + | | | borrowed value does not live long enough + | | a temporary with access to the borrow is created here ... + | binding `_t1` declared here | help: consider adding semicolon after the expression so its temporaries are dropped sooner, before the local variables declared by the block are dropped | @@ -127,12 +135,13 @@ error[E0597]: `_t1` does not live long enough --> $DIR/issue-54556-used-vs-unused-tails.rs:40:55 | LL | fn f() -> String { let mut _t1 = D(Box::new("t1")); D(&_t1).end() } // `let x = ...; x` - | --^^^^- - - | | | | - | | | `_t1` dropped here while still borrowed - | | | ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `D` - | | borrowed value does not live long enough - | a temporary with access to the borrow is created here ... + | ------- --^^^^- - + | | | | | + | | | | `_t1` dropped here while still borrowed + | | | | ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `D` + | | | borrowed value does not live long enough + | | a temporary with access to the borrow is created here ... + | binding `_t1` declared here | = note: the temporary is part of an expression at the end of a block; consider forcing this temporary to be dropped sooner, before the block's local variables are dropped diff --git a/tests/ui/nll/issue-54556-wrap-it-up.stderr b/tests/ui/nll/issue-54556-wrap-it-up.stderr index 9f27fac15a7..adc419ae515 100644 --- a/tests/ui/nll/issue-54556-wrap-it-up.stderr +++ b/tests/ui/nll/issue-54556-wrap-it-up.stderr @@ -2,10 +2,10 @@ error[E0506]: cannot assign to `x` because it is borrowed --> $DIR/issue-54556-wrap-it-up.rs:27:5 | LL | let wrap = Wrap { p: &mut x }; - | ------ borrow of `x` occurs here + | ------ `x` is borrowed here ... LL | x = 1; - | ^^^^^ assignment to borrowed `x` occurs here + | ^^^^^ `x` is assigned to here but it was already borrowed LL | } | - borrow might be used here, when `foo` is dropped and runs the destructor for type `Foo<'_>` diff --git a/tests/ui/nll/issue-55511.stderr b/tests/ui/nll/issue-55511.stderr index bf3e58e8cdb..ecb9ef0aef9 100644 --- a/tests/ui/nll/issue-55511.stderr +++ b/tests/ui/nll/issue-55511.stderr @@ -1,6 +1,8 @@ error[E0597]: `a` does not live long enough --> $DIR/issue-55511.rs:13:28 | +LL | let a = 22; + | - binding `a` declared here LL | let b = Some(Cell::new(&a)); | ^^ borrowed value does not live long enough ... diff --git a/tests/ui/nll/issue-57989.stderr b/tests/ui/nll/issue-57989.stderr index 31f40d8252e..d5effd6f346 100644 --- a/tests/ui/nll/issue-57989.stderr +++ b/tests/ui/nll/issue-57989.stderr @@ -13,9 +13,9 @@ error[E0506]: cannot assign to `*x` because it is borrowed --> $DIR/issue-57989.rs:5:5 | LL | let g = &x; - | -- borrow of `*x` occurs here + | -- `*x` is borrowed here LL | *x = 0; - | ^^^^^^ assignment to borrowed `*x` occurs here + | ^^^^^^ `*x` is assigned to here but it was already borrowed LL | LL | g; | - borrow later used here diff --git a/tests/ui/nll/issue-68550.stderr b/tests/ui/nll/issue-68550.stderr index e234ebb04e1..851e3628748 100644 --- a/tests/ui/nll/issue-68550.stderr +++ b/tests/ui/nll/issue-68550.stderr @@ -2,7 +2,9 @@ error[E0597]: `x` does not live long enough --> $DIR/issue-68550.rs:12:20 | LL | fn run<'a, A>(x: A) - | -- lifetime `'a` defined here + | -- - binding `x` declared here + | | + | lifetime `'a` defined here ... LL | let _: &'a A = &x; | ----- ^^ borrowed value does not live long enough diff --git a/tests/ui/nll/issue-69114-static-mut-ty.stderr b/tests/ui/nll/issue-69114-static-mut-ty.stderr index 5e55cb502ca..1b41230d7ba 100644 --- a/tests/ui/nll/issue-69114-static-mut-ty.stderr +++ b/tests/ui/nll/issue-69114-static-mut-ty.stderr @@ -1,6 +1,9 @@ error[E0597]: `n` does not live long enough --> $DIR/issue-69114-static-mut-ty.rs:19:15 | +LL | let n = 42; + | - binding `n` declared here +LL | unsafe { LL | BAR = &n; | ------^^ | | | @@ -13,6 +16,9 @@ LL | } error[E0597]: `n` does not live long enough --> $DIR/issue-69114-static-mut-ty.rs:27:22 | +LL | let n = 42; + | - binding `n` declared here +LL | unsafe { LL | BAR_ELIDED = &n; | -------------^^ | | | diff --git a/tests/ui/nll/issue-69114-static-ty.stderr b/tests/ui/nll/issue-69114-static-ty.stderr index 0815e74b553..9215e850f7d 100644 --- a/tests/ui/nll/issue-69114-static-ty.stderr +++ b/tests/ui/nll/issue-69114-static-ty.stderr @@ -1,6 +1,8 @@ error[E0597]: `n` does not live long enough --> $DIR/issue-69114-static-ty.rs:7:9 | +LL | let n = 42; + | - binding `n` declared here LL | FOO(&n); | ----^^- | | | diff --git a/tests/ui/nll/loan_ends_mid_block_pair.stderr b/tests/ui/nll/loan_ends_mid_block_pair.stderr index eb8442b31d7..58e378ab021 100644 --- a/tests/ui/nll/loan_ends_mid_block_pair.stderr +++ b/tests/ui/nll/loan_ends_mid_block_pair.stderr @@ -2,10 +2,10 @@ error[E0506]: cannot assign to `data.0` because it is borrowed --> $DIR/loan_ends_mid_block_pair.rs:12:5 | LL | let c = &mut data.0; - | ----------- borrow of `data.0` occurs here + | ----------- `data.0` is borrowed here LL | capitalize(c); LL | data.0 = 'e'; - | ^^^^^^^^^^^^ assignment to borrowed `data.0` occurs here + | ^^^^^^^^^^^^ `data.0` is assigned to here but it was already borrowed ... LL | capitalize(c); | - borrow later used here diff --git a/tests/ui/nll/local-outlives-static-via-hrtb.stderr b/tests/ui/nll/local-outlives-static-via-hrtb.stderr index f5c10f3ddea..a6b3328b5a2 100644 --- a/tests/ui/nll/local-outlives-static-via-hrtb.stderr +++ b/tests/ui/nll/local-outlives-static-via-hrtb.stderr @@ -1,6 +1,8 @@ error[E0597]: `local` does not live long enough --> $DIR/local-outlives-static-via-hrtb.rs:24:28 | +LL | let local = 0; + | ----- binding `local` declared here LL | assert_static_via_hrtb(&local); | -----------------------^^^^^^- | | | @@ -19,6 +21,9 @@ LL | fn assert_static_via_hrtb<G>(_: G) where for<'a> G: Outlives<'a> {} error[E0597]: `local` does not live long enough --> $DIR/local-outlives-static-via-hrtb.rs:25:45 | +LL | let local = 0; + | ----- binding `local` declared here +LL | assert_static_via_hrtb(&local); LL | assert_static_via_hrtb_with_assoc_type(&&local); | ----------------------------------------^^^^^^- | | | diff --git a/tests/ui/nll/match-cfg-fake-edges2.stderr b/tests/ui/nll/match-cfg-fake-edges2.stderr index c6d15a936d8..36f2cd0b85d 100644 --- a/tests/ui/nll/match-cfg-fake-edges2.stderr +++ b/tests/ui/nll/match-cfg-fake-edges2.stderr @@ -2,7 +2,7 @@ error[E0503]: cannot use `y.1` because it was mutably borrowed --> $DIR/match-cfg-fake-edges2.rs:8:5 | LL | let r = &mut y.1; - | -------- borrow of `y.1` occurs here + | -------- `y.1` is borrowed here ... LL | match y { | ^^^^^^^ use of borrowed `y.1` diff --git a/tests/ui/nll/match-guards-always-borrow.stderr b/tests/ui/nll/match-guards-always-borrow.stderr index fa01d3a6fd1..afd853c403e 100644 --- a/tests/ui/nll/match-guards-always-borrow.stderr +++ b/tests/ui/nll/match-guards-always-borrow.stderr @@ -4,7 +4,7 @@ error[E0507]: cannot move out of `foo` in pattern guard LL | (|| { let bar = foo; bar.take() })(); | ^^ --- move occurs because `foo` has type `&mut Option<&i32>`, which does not implement the `Copy` trait | | - | move out of `foo` occurs here + | `foo` is moved here | = note: variables bound in patterns cannot be moved from until after the end of the pattern guard @@ -14,7 +14,7 @@ error[E0507]: cannot move out of `foo` in pattern guard LL | (|| { let bar = foo; bar.take() })(); | ^^ --- move occurs because `foo` has type `&mut Option<&i32>`, which does not implement the `Copy` trait | | - | move out of `foo` occurs here + | `foo` is moved here | = note: variables bound in patterns cannot be moved from until after the end of the pattern guard diff --git a/tests/ui/nll/match-guards-partially-borrow.stderr b/tests/ui/nll/match-guards-partially-borrow.stderr index 60b8dee71a8..7bdcbcb9c6e 100644 --- a/tests/ui/nll/match-guards-partially-borrow.stderr +++ b/tests/ui/nll/match-guards-partially-borrow.stderr @@ -74,9 +74,9 @@ error[E0506]: cannot assign to `t` because it is borrowed --> $DIR/match-guards-partially-borrow.rs:225:13 | LL | s if { - | - borrow of `t` occurs here + | - `t` is borrowed here LL | t = !t; - | ^^^^^^ assignment to borrowed `t` occurs here + | ^^^^^^ `t` is assigned to here but it was already borrowed LL | false LL | } => (), // What value should `s` have in the arm? | - borrow later used here @@ -85,9 +85,9 @@ error[E0506]: cannot assign to `t` because it is borrowed --> $DIR/match-guards-partially-borrow.rs:235:13 | LL | s if let Some(()) = { - | - borrow of `t` occurs here + | - `t` is borrowed here LL | t = !t; - | ^^^^^^ assignment to borrowed `t` occurs here + | ^^^^^^ `t` is assigned to here but it was already borrowed LL | None LL | } => (), // What value should `s` have in the arm? | - borrow later used here diff --git a/tests/ui/nll/match-on-borrowed.stderr b/tests/ui/nll/match-on-borrowed.stderr index 32666529f3f..9273484565a 100644 --- a/tests/ui/nll/match-on-borrowed.stderr +++ b/tests/ui/nll/match-on-borrowed.stderr @@ -2,7 +2,7 @@ error[E0503]: cannot use `e` because it was mutably borrowed --> $DIR/match-on-borrowed.rs:47:11 | LL | E::V(ref mut x, _) => x, - | --------- borrow of `e.0` occurs here + | --------- `e.0` is borrowed here ... LL | match e { // Don't know that E uses a tag for its discriminant | ^ use of borrowed `e.0` @@ -14,7 +14,7 @@ error[E0503]: cannot use `*f` because it was mutably borrowed --> $DIR/match-on-borrowed.rs:61:11 | LL | E::V(ref mut x, _) => x, - | --------- borrow of `f.0` occurs here + | --------- `f.0` is borrowed here ... LL | match f { // Don't know that E uses a tag for its discriminant | ^ use of borrowed `f.0` @@ -26,7 +26,7 @@ error[E0503]: cannot use `t` because it was mutably borrowed --> $DIR/match-on-borrowed.rs:81:5 | LL | let x = &mut t; - | ------ borrow of `t` occurs here + | ------ `t` is borrowed here LL | match t { | ^^^^^^^ use of borrowed `t` ... diff --git a/tests/ui/nll/maybe-initialized-drop-implicit-fragment-drop.stderr b/tests/ui/nll/maybe-initialized-drop-implicit-fragment-drop.stderr index 80e29780746..55646b9dca9 100644 --- a/tests/ui/nll/maybe-initialized-drop-implicit-fragment-drop.stderr +++ b/tests/ui/nll/maybe-initialized-drop-implicit-fragment-drop.stderr @@ -2,10 +2,10 @@ error[E0506]: cannot assign to `x` because it is borrowed --> $DIR/maybe-initialized-drop-implicit-fragment-drop.rs:17:5 | LL | let wrap = Wrap { p: &mut x }; - | ------ borrow of `x` occurs here + | ------ `x` is borrowed here ... LL | x = 1; - | ^^^^^ assignment to borrowed `x` occurs here + | ^^^^^ `x` is assigned to here but it was already borrowed LL | // FIXME ^ Should not error in the future with implicit dtors, only manually implemented ones LL | } | - borrow might be used here, when `foo` is dropped and runs the destructor for type `Foo<'_>` diff --git a/tests/ui/nll/maybe-initialized-drop-with-fragment.stderr b/tests/ui/nll/maybe-initialized-drop-with-fragment.stderr index 14074472eaf..c89f94a7894 100644 --- a/tests/ui/nll/maybe-initialized-drop-with-fragment.stderr +++ b/tests/ui/nll/maybe-initialized-drop-with-fragment.stderr @@ -2,10 +2,10 @@ error[E0506]: cannot assign to `x` because it is borrowed --> $DIR/maybe-initialized-drop-with-fragment.rs:19:5 | LL | let wrap = Wrap { p: &mut x }; - | ------ borrow of `x` occurs here + | ------ `x` is borrowed here ... LL | x = 1; - | ^^^^^ assignment to borrowed `x` occurs here + | ^^^^^ `x` is assigned to here but it was already borrowed LL | } | - borrow might be used here, when `foo` is dropped and runs the destructor for type `Foo<'_>` diff --git a/tests/ui/nll/maybe-initialized-drop-with-uninitialized-fragments.stderr b/tests/ui/nll/maybe-initialized-drop-with-uninitialized-fragments.stderr index 91c0afc1dba..90db13bc578 100644 --- a/tests/ui/nll/maybe-initialized-drop-with-uninitialized-fragments.stderr +++ b/tests/ui/nll/maybe-initialized-drop-with-uninitialized-fragments.stderr @@ -2,10 +2,10 @@ error[E0506]: cannot assign to `x` because it is borrowed --> $DIR/maybe-initialized-drop-with-uninitialized-fragments.rs:20:5 | LL | let wrap = Wrap { p: &mut x }; - | ------ borrow of `x` occurs here + | ------ `x` is borrowed here ... LL | x = 1; - | ^^^^^ assignment to borrowed `x` occurs here + | ^^^^^ `x` is assigned to here but it was already borrowed LL | // FIXME ^ This currently errors and it should not. LL | } | - borrow might be used here, when `foo` is dropped and runs the destructor for type `Foo<'_>` diff --git a/tests/ui/nll/maybe-initialized-drop.stderr b/tests/ui/nll/maybe-initialized-drop.stderr index 9825ba4611b..15a53a09af8 100644 --- a/tests/ui/nll/maybe-initialized-drop.stderr +++ b/tests/ui/nll/maybe-initialized-drop.stderr @@ -2,9 +2,9 @@ error[E0506]: cannot assign to `x` because it is borrowed --> $DIR/maybe-initialized-drop.rs:14:5 | LL | let wrap = Wrap { p: &mut x }; - | ------ borrow of `x` occurs here + | ------ `x` is borrowed here LL | x = 1; - | ^^^^^ assignment to borrowed `x` occurs here + | ^^^^^ `x` is assigned to here but it was already borrowed LL | } | - borrow might be used here, when `wrap` is dropped and runs the `Drop` code for type `Wrap` diff --git a/tests/ui/nll/polonius/polonius-smoke-test.stderr b/tests/ui/nll/polonius/polonius-smoke-test.stderr index fa1a6a9c957..534813b2d9f 100644 --- a/tests/ui/nll/polonius/polonius-smoke-test.stderr +++ b/tests/ui/nll/polonius/polonius-smoke-test.stderr @@ -8,7 +8,7 @@ error[E0503]: cannot use `x` because it was mutably borrowed --> $DIR/polonius-smoke-test.rs:12:13 | LL | let y = &mut x; - | ------ borrow of `x` occurs here + | ------ `x` is borrowed here LL | let z = x; | ^ use of borrowed `x` LL | let w = y; @@ -18,7 +18,9 @@ error[E0505]: cannot move out of `x` because it is borrowed --> $DIR/polonius-smoke-test.rs:18:13 | LL | pub fn use_while_mut_fr(x: &mut i32) -> &mut i32 { - | - let's call the lifetime of this reference `'1` + | - - let's call the lifetime of this reference `'1` + | | + | binding `x` declared here LL | let y = &mut *x; | ------- borrow of `*x` occurs here LL | let z = x; @@ -29,6 +31,8 @@ LL | y error[E0505]: cannot move out of `s` because it is borrowed --> $DIR/polonius-smoke-test.rs:42:5 | +LL | let s = &mut 1; + | - binding `s` declared here LL | let r = &mut *s; | ------- borrow of `*s` occurs here LL | let tmp = foo(&r); diff --git a/tests/ui/nll/promoted-bounds.stderr b/tests/ui/nll/promoted-bounds.stderr index df347f4e7f0..d111256b845 100644 --- a/tests/ui/nll/promoted-bounds.stderr +++ b/tests/ui/nll/promoted-bounds.stderr @@ -4,6 +4,7 @@ error[E0597]: `l` does not live long enough LL | let ptr = { | --- borrow later stored here LL | let l = 3; + | - binding `l` declared here LL | let b = &l; | ^^ borrowed value does not live long enough ... diff --git a/tests/ui/nll/reference-carried-through-struct-field.stderr b/tests/ui/nll/reference-carried-through-struct-field.stderr index 56d878e4303..5672b9cd7e9 100644 --- a/tests/ui/nll/reference-carried-through-struct-field.stderr +++ b/tests/ui/nll/reference-carried-through-struct-field.stderr @@ -2,7 +2,7 @@ error[E0503]: cannot use `x` because it was mutably borrowed --> $DIR/reference-carried-through-struct-field.rs:6:5 | LL | let wrapper = Wrap { w: &mut x }; - | ------ borrow of `x` occurs here + | ------ `x` is borrowed here LL | x += 1; | ^^^^^^ use of borrowed `x` LL | *wrapper.w += 1; diff --git a/tests/ui/nll/relate_tys/var-appears-twice.stderr b/tests/ui/nll/relate_tys/var-appears-twice.stderr index d032ce6f213..ff6ea598ff4 100644 --- a/tests/ui/nll/relate_tys/var-appears-twice.stderr +++ b/tests/ui/nll/relate_tys/var-appears-twice.stderr @@ -1,6 +1,9 @@ error[E0597]: `b` does not live long enough --> $DIR/var-appears-twice.rs:20:38 | +LL | let b = 44; + | - binding `b` declared here +... LL | let x: DoubleCell<_> = make_cell(&b); | ------------- ^^ borrowed value does not live long enough | | diff --git a/tests/ui/nll/user-annotations/adt-brace-enums.stderr b/tests/ui/nll/user-annotations/adt-brace-enums.stderr index 253e3825110..9e94fd5a782 100644 --- a/tests/ui/nll/user-annotations/adt-brace-enums.stderr +++ b/tests/ui/nll/user-annotations/adt-brace-enums.stderr @@ -1,6 +1,8 @@ error[E0597]: `c` does not live long enough --> $DIR/adt-brace-enums.rs:25:48 | +LL | let c = 66; + | - binding `c` declared here LL | SomeEnum::SomeVariant::<&'static u32> { t: &c }; | ^^ | | @@ -15,6 +17,7 @@ error[E0597]: `c` does not live long enough LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) { | -- lifetime `'a` defined here LL | let c = 66; + | - binding `c` declared here LL | SomeEnum::SomeVariant::<&'a u32> { t: &c }; | ^^ | | diff --git a/tests/ui/nll/user-annotations/adt-brace-structs.stderr b/tests/ui/nll/user-annotations/adt-brace-structs.stderr index 8b9d1705df6..cbb7f6a55a9 100644 --- a/tests/ui/nll/user-annotations/adt-brace-structs.stderr +++ b/tests/ui/nll/user-annotations/adt-brace-structs.stderr @@ -1,6 +1,8 @@ error[E0597]: `c` does not live long enough --> $DIR/adt-brace-structs.rs:23:37 | +LL | let c = 66; + | - binding `c` declared here LL | SomeStruct::<&'static u32> { t: &c }; | ^^ | | @@ -15,6 +17,7 @@ error[E0597]: `c` does not live long enough LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) { | -- lifetime `'a` defined here LL | let c = 66; + | - binding `c` declared here LL | SomeStruct::<&'a u32> { t: &c }; | ^^ | | diff --git a/tests/ui/nll/user-annotations/adt-nullary-enums.stderr b/tests/ui/nll/user-annotations/adt-nullary-enums.stderr index 3326fa521fc..bca85a90d19 100644 --- a/tests/ui/nll/user-annotations/adt-nullary-enums.stderr +++ b/tests/ui/nll/user-annotations/adt-nullary-enums.stderr @@ -1,6 +1,8 @@ error[E0597]: `c` does not live long enough --> $DIR/adt-nullary-enums.rs:33:41 | +LL | let c = 66; + | - binding `c` declared here LL | / combine( LL | | SomeEnum::SomeVariant(Cell::new(&c)), | | ^^ borrowed value does not live long enough @@ -15,7 +17,9 @@ error[E0597]: `c` does not live long enough | LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) { | -- lifetime `'a` defined here -... +LL | let c = 66; + | - binding `c` declared here +LL | combine( LL | SomeEnum::SomeVariant(Cell::new(&c)), | ----------^^- | | | diff --git a/tests/ui/nll/user-annotations/adt-tuple-enums.stderr b/tests/ui/nll/user-annotations/adt-tuple-enums.stderr index 2fa7042631d..d2d85ec2b9b 100644 --- a/tests/ui/nll/user-annotations/adt-tuple-enums.stderr +++ b/tests/ui/nll/user-annotations/adt-tuple-enums.stderr @@ -1,6 +1,8 @@ error[E0597]: `c` does not live long enough --> $DIR/adt-tuple-enums.rs:28:43 | +LL | let c = 66; + | - binding `c` declared here LL | SomeEnum::SomeVariant::<&'static u32>(&c); | ^^ | | @@ -15,6 +17,7 @@ error[E0597]: `c` does not live long enough LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) { | -- lifetime `'a` defined here LL | let c = 66; + | - binding `c` declared here LL | SomeEnum::SomeVariant::<&'a u32>(&c); | ^^ | | diff --git a/tests/ui/nll/user-annotations/adt-tuple-struct-calls.stderr b/tests/ui/nll/user-annotations/adt-tuple-struct-calls.stderr index 9664fb9f548..b7bc2a10b70 100644 --- a/tests/ui/nll/user-annotations/adt-tuple-struct-calls.stderr +++ b/tests/ui/nll/user-annotations/adt-tuple-struct-calls.stderr @@ -1,6 +1,9 @@ error[E0597]: `c` does not live long enough --> $DIR/adt-tuple-struct-calls.rs:27:7 | +LL | let c = 66; + | - binding `c` declared here +LL | let f = SomeStruct::<&'static u32>; LL | f(&c); | --^^- | | | @@ -14,7 +17,9 @@ error[E0597]: `c` does not live long enough | LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) { | -- lifetime `'a` defined here -... +LL | let c = 66; + | - binding `c` declared here +LL | let f = SomeStruct::<&'a u32>; LL | f(&c); | --^^- | | | diff --git a/tests/ui/nll/user-annotations/adt-tuple-struct.stderr b/tests/ui/nll/user-annotations/adt-tuple-struct.stderr index 76b5252258c..97d39da265f 100644 --- a/tests/ui/nll/user-annotations/adt-tuple-struct.stderr +++ b/tests/ui/nll/user-annotations/adt-tuple-struct.stderr @@ -1,6 +1,8 @@ error[E0597]: `c` does not live long enough --> $DIR/adt-tuple-struct.rs:23:32 | +LL | let c = 66; + | - binding `c` declared here LL | SomeStruct::<&'static u32>(&c); | ^^ | | @@ -15,6 +17,7 @@ error[E0597]: `c` does not live long enough LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) { | -- lifetime `'a` defined here LL | let c = 66; + | - binding `c` declared here LL | SomeStruct::<&'a u32>(&c); | ^^ | | diff --git a/tests/ui/nll/user-annotations/cast_static_lifetime.stderr b/tests/ui/nll/user-annotations/cast_static_lifetime.stderr index 4599d04e7e2..3b9363c41f2 100644 --- a/tests/ui/nll/user-annotations/cast_static_lifetime.stderr +++ b/tests/ui/nll/user-annotations/cast_static_lifetime.stderr @@ -1,6 +1,8 @@ error[E0597]: `x` does not live long enough --> $DIR/cast_static_lifetime.rs:5:19 | +LL | let x = 22_u32; + | - binding `x` declared here LL | let y: &u32 = (&x) as &'static u32; | ^^^^---------------- | | diff --git a/tests/ui/nll/user-annotations/constant-in-expr-inherent-2.stderr b/tests/ui/nll/user-annotations/constant-in-expr-inherent-2.stderr index 12065a85aa4..f164255ef30 100644 --- a/tests/ui/nll/user-annotations/constant-in-expr-inherent-2.stderr +++ b/tests/ui/nll/user-annotations/constant-in-expr-inherent-2.stderr @@ -1,6 +1,8 @@ error[E0597]: `x` does not live long enough --> $DIR/constant-in-expr-inherent-2.rs:23:9 | +LL | let x = (); + | - binding `x` declared here LL | FUN(&x); | ----^^- | | | @@ -13,6 +15,9 @@ LL | } error[E0597]: `x` does not live long enough --> $DIR/constant-in-expr-inherent-2.rs:24:23 | +LL | let x = (); + | - binding `x` declared here +LL | FUN(&x); LL | A::ASSOCIATED_FUN(&x); | ------------------^^- | | | @@ -25,6 +30,9 @@ LL | } error[E0597]: `x` does not live long enough --> $DIR/constant-in-expr-inherent-2.rs:25:28 | +LL | let x = (); + | - binding `x` declared here +... LL | B::ALSO_ASSOCIATED_FUN(&x); | -----------------------^^- | | | @@ -37,6 +45,9 @@ LL | } error[E0597]: `x` does not live long enough --> $DIR/constant-in-expr-inherent-2.rs:26:31 | +LL | let x = (); + | - binding `x` declared here +... LL | <_>::TRAIT_ASSOCIATED_FUN(&x); | --------------------------^^- | | | diff --git a/tests/ui/nll/user-annotations/fns.stderr b/tests/ui/nll/user-annotations/fns.stderr index e0640da39e2..8b53e138d9b 100644 --- a/tests/ui/nll/user-annotations/fns.stderr +++ b/tests/ui/nll/user-annotations/fns.stderr @@ -1,6 +1,8 @@ error[E0597]: `c` does not live long enough --> $DIR/fns.rs:23:29 | +LL | let c = 66; + | - binding `c` declared here LL | some_fn::<&'static u32>(&c); | ------------------------^^- | | | @@ -15,6 +17,7 @@ error[E0597]: `c` does not live long enough LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) { | -- lifetime `'a` defined here LL | let c = 66; + | - binding `c` declared here LL | some_fn::<&'a u32>(&c); | -------------------^^- | | | diff --git a/tests/ui/nll/user-annotations/method-call.stderr b/tests/ui/nll/user-annotations/method-call.stderr index 10447e45a6d..3803cbf776b 100644 --- a/tests/ui/nll/user-annotations/method-call.stderr +++ b/tests/ui/nll/user-annotations/method-call.stderr @@ -1,6 +1,8 @@ error[E0597]: `c` does not live long enough --> $DIR/method-call.rs:36:34 | +LL | let c = 66; + | - binding `c` declared here LL | a.method::<&'static u32>(b, &c); | -----------------------------^^- | | | @@ -15,6 +17,8 @@ error[E0597]: `c` does not live long enough LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) { | -- lifetime `'a` defined here ... +LL | let c = 66; + | - binding `c` declared here LL | a.method::<&'a u32>(b, &c); | ------------------------^^- | | | diff --git a/tests/ui/nll/user-annotations/method-ufcs-1.stderr b/tests/ui/nll/user-annotations/method-ufcs-1.stderr index 962ddfd2bd1..c7c08c948ab 100644 --- a/tests/ui/nll/user-annotations/method-ufcs-1.stderr +++ b/tests/ui/nll/user-annotations/method-ufcs-1.stderr @@ -1,6 +1,9 @@ error[E0597]: `a` does not live long enough --> $DIR/method-ufcs-1.rs:30:7 | +LL | let a = 22; + | - binding `a` declared here +... LL | x(&a, b, c); | --^^------- | | | @@ -14,6 +17,8 @@ error[E0597]: `a` does not live long enough | LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) { | -- lifetime `'a` defined here +LL | let a = 22; + | - binding `a` declared here ... LL | <&'a u32 as Bazoom<_>>::method(&a, b, c); | -------------------------------^^------- diff --git a/tests/ui/nll/user-annotations/method-ufcs-2.stderr b/tests/ui/nll/user-annotations/method-ufcs-2.stderr index 63d59905e1c..b7861a3bd06 100644 --- a/tests/ui/nll/user-annotations/method-ufcs-2.stderr +++ b/tests/ui/nll/user-annotations/method-ufcs-2.stderr @@ -1,6 +1,9 @@ error[E0597]: `a` does not live long enough --> $DIR/method-ufcs-2.rs:30:7 | +LL | let a = 22; + | - binding `a` declared here +... LL | x(&a, b, c); | --^^------- | | | @@ -14,7 +17,10 @@ error[E0597]: `b` does not live long enough | LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) { | -- lifetime `'a` defined here -... +LL | let a = 22; +LL | let b = 44; + | - binding `b` declared here +LL | let c = 66; LL | <_ as Bazoom<&'a u32>>::method(a, &b, c); | ----------------------------------^^---- | | | diff --git a/tests/ui/nll/user-annotations/method-ufcs-3.stderr b/tests/ui/nll/user-annotations/method-ufcs-3.stderr index e7851833e93..8cb995a03ce 100644 --- a/tests/ui/nll/user-annotations/method-ufcs-3.stderr +++ b/tests/ui/nll/user-annotations/method-ufcs-3.stderr @@ -1,6 +1,8 @@ error[E0597]: `c` does not live long enough --> $DIR/method-ufcs-3.rs:36:53 | +LL | let c = 66; + | - binding `c` declared here LL | <_ as Bazoom<_>>::method::<&'static u32>(&a, b, &c); | ------------------------------------------------^^- | | | @@ -15,6 +17,8 @@ error[E0597]: `c` does not live long enough LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) { | -- lifetime `'a` defined here ... +LL | let c = 66; + | - binding `c` declared here LL | <_ as Bazoom<_>>::method::<&'a u32>(&a, b, &c); | -------------------------------------------^^- | | | diff --git a/tests/ui/nll/user-annotations/method-ufcs-inherent-1.stderr b/tests/ui/nll/user-annotations/method-ufcs-inherent-1.stderr index 94861babd6f..fb26b8d09e1 100644 --- a/tests/ui/nll/user-annotations/method-ufcs-inherent-1.stderr +++ b/tests/ui/nll/user-annotations/method-ufcs-inherent-1.stderr @@ -4,6 +4,7 @@ error[E0597]: `v` does not live long enough LL | fn foo<'a>() { | -- lifetime `'a` defined here LL | let v = 22; + | - binding `v` declared here LL | let x = A::<'a>::new(&v, 22); | -------------^^----- | | | diff --git a/tests/ui/nll/user-annotations/method-ufcs-inherent-2.stderr b/tests/ui/nll/user-annotations/method-ufcs-inherent-2.stderr index 06f20d9b235..03b97447e1a 100644 --- a/tests/ui/nll/user-annotations/method-ufcs-inherent-2.stderr +++ b/tests/ui/nll/user-annotations/method-ufcs-inherent-2.stderr @@ -4,6 +4,7 @@ error[E0597]: `v` does not live long enough LL | fn foo<'a>() { | -- lifetime `'a` defined here LL | let v = 22; + | - binding `v` declared here LL | let x = A::<'a>::new::<&'a u32>(&v, &v); | ------------------------^^----- | | | @@ -19,6 +20,7 @@ error[E0597]: `v` does not live long enough LL | fn foo<'a>() { | -- lifetime `'a` defined here LL | let v = 22; + | - binding `v` declared here LL | let x = A::<'a>::new::<&'a u32>(&v, &v); | ----------------------------^^- | | | diff --git a/tests/ui/nll/user-annotations/method-ufcs-inherent-3.stderr b/tests/ui/nll/user-annotations/method-ufcs-inherent-3.stderr index 4ad61dc81c4..69dd1d1aaae 100644 --- a/tests/ui/nll/user-annotations/method-ufcs-inherent-3.stderr +++ b/tests/ui/nll/user-annotations/method-ufcs-inherent-3.stderr @@ -4,6 +4,7 @@ error[E0597]: `v` does not live long enough LL | fn foo<'a>() { | -- lifetime `'a` defined here LL | let v = 22; + | - binding `v` declared here LL | let x = <A<'a>>::new(&v, 22); | -------------^^----- | | | diff --git a/tests/ui/nll/user-annotations/method-ufcs-inherent-4.stderr b/tests/ui/nll/user-annotations/method-ufcs-inherent-4.stderr index 0f83e99cdfb..66d82bb49dc 100644 --- a/tests/ui/nll/user-annotations/method-ufcs-inherent-4.stderr +++ b/tests/ui/nll/user-annotations/method-ufcs-inherent-4.stderr @@ -4,6 +4,7 @@ error[E0597]: `v` does not live long enough LL | fn foo<'a>() { | -- lifetime `'a` defined here LL | let v = 22; + | - binding `v` declared here LL | let x = <A<'a>>::new::<&'a u32>(&v, &v); | ------------------------^^----- | | | @@ -19,6 +20,7 @@ error[E0597]: `v` does not live long enough LL | fn foo<'a>() { | -- lifetime `'a` defined here LL | let v = 22; + | - binding `v` declared here LL | let x = <A<'a>>::new::<&'a u32>(&v, &v); | ----------------------------^^- | | | diff --git a/tests/ui/nll/user-annotations/normalization.stderr b/tests/ui/nll/user-annotations/normalization.stderr index 975cb4b66d9..acc3a1800f4 100644 --- a/tests/ui/nll/user-annotations/normalization.stderr +++ b/tests/ui/nll/user-annotations/normalization.stderr @@ -1,6 +1,8 @@ error[E0597]: `a` does not live long enough --> $DIR/normalization.rs:10:31 | +LL | let a = 22; + | - binding `a` declared here LL | let _: <() as Foo>::Out = &a; | ---------------- ^^ borrowed value does not live long enough | | @@ -12,6 +14,8 @@ LL | } error[E0597]: `a` does not live long enough --> $DIR/normalization.rs:13:40 | +LL | let a = 22; + | - binding `a` declared here LL | let _: <&'static () as Foo>::Out = &a; | ------------------------- ^^ borrowed value does not live long enough | | diff --git a/tests/ui/nll/user-annotations/pattern_substs_on_brace_enum_variant.stderr b/tests/ui/nll/user-annotations/pattern_substs_on_brace_enum_variant.stderr index a97e7a9fd46..3e7969e1179 100644 --- a/tests/ui/nll/user-annotations/pattern_substs_on_brace_enum_variant.stderr +++ b/tests/ui/nll/user-annotations/pattern_substs_on_brace_enum_variant.stderr @@ -1,6 +1,8 @@ error[E0597]: `y` does not live long enough --> $DIR/pattern_substs_on_brace_enum_variant.rs:7:33 | +LL | let y = 22; + | - binding `y` declared here LL | let foo = Foo::Bar { field: &y }; | ^^ borrowed value does not live long enough LL | @@ -12,6 +14,8 @@ LL | } error[E0597]: `y` does not live long enough --> $DIR/pattern_substs_on_brace_enum_variant.rs:14:33 | +LL | let y = 22; + | - binding `y` declared here LL | let foo = Foo::Bar { field: &y }; | ^^ borrowed value does not live long enough ... diff --git a/tests/ui/nll/user-annotations/pattern_substs_on_brace_struct.stderr b/tests/ui/nll/user-annotations/pattern_substs_on_brace_struct.stderr index 408d7c2a5e2..89a1e9545e8 100644 --- a/tests/ui/nll/user-annotations/pattern_substs_on_brace_struct.stderr +++ b/tests/ui/nll/user-annotations/pattern_substs_on_brace_struct.stderr @@ -1,6 +1,8 @@ error[E0597]: `y` does not live long enough --> $DIR/pattern_substs_on_brace_struct.rs:5:28 | +LL | let y = 22; + | - binding `y` declared here LL | let foo = Foo { field: &y }; | ^^ borrowed value does not live long enough LL | @@ -12,6 +14,8 @@ LL | } error[E0597]: `y` does not live long enough --> $DIR/pattern_substs_on_brace_struct.rs:12:28 | +LL | let y = 22; + | - binding `y` declared here LL | let foo = Foo { field: &y }; | ^^ borrowed value does not live long enough ... diff --git a/tests/ui/nll/user-annotations/pattern_substs_on_tuple_enum_variant.stderr b/tests/ui/nll/user-annotations/pattern_substs_on_tuple_enum_variant.stderr index 920c906f63a..8efeecc7709 100644 --- a/tests/ui/nll/user-annotations/pattern_substs_on_tuple_enum_variant.stderr +++ b/tests/ui/nll/user-annotations/pattern_substs_on_tuple_enum_variant.stderr @@ -1,6 +1,8 @@ error[E0597]: `y` does not live long enough --> $DIR/pattern_substs_on_tuple_enum_variant.rs:7:24 | +LL | let y = 22; + | - binding `y` declared here LL | let foo = Foo::Bar(&y); | ^^ borrowed value does not live long enough LL | @@ -12,6 +14,8 @@ LL | } error[E0597]: `y` does not live long enough --> $DIR/pattern_substs_on_tuple_enum_variant.rs:14:24 | +LL | let y = 22; + | - binding `y` declared here LL | let foo = Foo::Bar(&y); | ^^ borrowed value does not live long enough ... diff --git a/tests/ui/nll/user-annotations/pattern_substs_on_tuple_struct.stderr b/tests/ui/nll/user-annotations/pattern_substs_on_tuple_struct.stderr index 3f01638d847..d7f1dac88a6 100644 --- a/tests/ui/nll/user-annotations/pattern_substs_on_tuple_struct.stderr +++ b/tests/ui/nll/user-annotations/pattern_substs_on_tuple_struct.stderr @@ -1,6 +1,8 @@ error[E0597]: `y` does not live long enough --> $DIR/pattern_substs_on_tuple_struct.rs:5:19 | +LL | let y = 22; + | - binding `y` declared here LL | let foo = Foo(&y); | ^^ borrowed value does not live long enough LL | @@ -12,6 +14,8 @@ LL | } error[E0597]: `y` does not live long enough --> $DIR/pattern_substs_on_tuple_struct.rs:12:19 | +LL | let y = 22; + | - binding `y` declared here LL | let foo = Foo(&y); | ^^ borrowed value does not live long enough ... diff --git a/tests/ui/nll/user-annotations/patterns.stderr b/tests/ui/nll/user-annotations/patterns.stderr index de6f8f80fe2..8bb714f1d0c 100644 --- a/tests/ui/nll/user-annotations/patterns.stderr +++ b/tests/ui/nll/user-annotations/patterns.stderr @@ -1,6 +1,8 @@ error[E0597]: `x` does not live long enough --> $DIR/patterns.rs:6:9 | +LL | let x = 22; + | - binding `x` declared here LL | let y: &'static u32; | ------------ type annotation requires that `x` is borrowed for `'static` LL | y = &x; @@ -11,6 +13,8 @@ LL | } error[E0597]: `x` does not live long enough --> $DIR/patterns.rs:14:9 | +LL | let x = 22; + | - binding `x` declared here LL | let (y, z): (&'static u32, &'static u32); | ---------------------------- type annotation requires that `x` is borrowed for `'static` LL | y = &x; @@ -21,6 +25,8 @@ LL | } error[E0597]: `x` does not live long enough --> $DIR/patterns.rs:20:13 | +LL | let x = 22; + | - binding `x` declared here LL | let y = &x; | ^^ borrowed value does not live long enough LL | let ref z: &'static u32 = y; @@ -32,6 +38,8 @@ LL | } error[E0597]: `x` does not live long enough --> $DIR/patterns.rs:39:9 | +LL | let x = 22; + | - binding `x` declared here LL | let Single { value: y }: Single<&'static u32>; | -------------------- type annotation requires that `x` is borrowed for `'static` LL | y = &x; @@ -42,6 +50,8 @@ LL | } error[E0597]: `x` does not live long enough --> $DIR/patterns.rs:51:10 | +LL | let x = 22; + | - binding `x` declared here LL | let Single2 { value: mut _y }: Single2<StaticU32>; | ------------------ type annotation requires that `x` is borrowed for `'static` LL | _y = &x; @@ -52,6 +62,8 @@ LL | } error[E0597]: `x` does not live long enough --> $DIR/patterns.rs:56:27 | +LL | let x = 22; + | - binding `x` declared here LL | let y: &'static u32 = &x; | ------------ ^^ borrowed value does not live long enough | | @@ -62,6 +74,8 @@ LL | } error[E0597]: `x` does not live long enough --> $DIR/patterns.rs:61:27 | +LL | let x = 22; + | - binding `x` declared here LL | let _: &'static u32 = &x; | ------------ ^^ borrowed value does not live long enough | | @@ -100,6 +114,8 @@ LL | let (_a, b): (Vec<&'static String>, _) = (vec![&String::new()], 44); error[E0597]: `x` does not live long enough --> $DIR/patterns.rs:75:40 | +LL | let x = 22; + | - binding `x` declared here LL | let (_, _): (&'static u32, u32) = (&x, 44); | ------------------- ^^ borrowed value does not live long enough | | @@ -110,6 +126,8 @@ LL | } error[E0597]: `x` does not live long enough --> $DIR/patterns.rs:80:40 | +LL | let x = 22; + | - binding `x` declared here LL | let (y, _): (&'static u32, u32) = (&x, 44); | ------------------- ^^ borrowed value does not live long enough | | @@ -120,6 +138,8 @@ LL | } error[E0597]: `x` does not live long enough --> $DIR/patterns.rs:85:69 | +LL | let x = 22; + | - binding `x` declared here LL | let Single { value: y }: Single<&'static u32> = Single { value: &x }; | -------------------- ^^ borrowed value does not live long enough | | @@ -130,6 +150,8 @@ LL | } error[E0597]: `x` does not live long enough --> $DIR/patterns.rs:90:69 | +LL | let x = 22; + | - binding `x` declared here LL | let Single { value: _ }: Single<&'static u32> = Single { value: &x }; | -------------------- ^^ borrowed value does not live long enough | | @@ -140,6 +162,8 @@ LL | } error[E0597]: `x` does not live long enough --> $DIR/patterns.rs:98:17 | +LL | let x = 22; + | - binding `x` declared here LL | let Double { value1: _, value2: _ }: Double<&'static u32> = Double { | -------------------- type annotation requires that `x` is borrowed for `'static` LL | value1: &x, diff --git a/tests/ui/nll/user-annotations/promoted-annotation.stderr b/tests/ui/nll/user-annotations/promoted-annotation.stderr index cb99a6a369d..132a00ba415 100644 --- a/tests/ui/nll/user-annotations/promoted-annotation.stderr +++ b/tests/ui/nll/user-annotations/promoted-annotation.stderr @@ -4,6 +4,7 @@ error[E0597]: `x` does not live long enough LL | fn foo<'a>() { | -- lifetime `'a` defined here LL | let x = 0; + | - binding `x` declared here LL | let f = &drop::<&'a i32>; | ---------------- assignment requires that `x` is borrowed for `'a` LL | f(&x); diff --git a/tests/ui/nll/user-annotations/type_ascription_static_lifetime.stderr b/tests/ui/nll/user-annotations/type_ascription_static_lifetime.stderr index ccbf3c1d927..766877f8835 100644 --- a/tests/ui/nll/user-annotations/type_ascription_static_lifetime.stderr +++ b/tests/ui/nll/user-annotations/type_ascription_static_lifetime.stderr @@ -1,6 +1,8 @@ error[E0597]: `x` does not live long enough --> $DIR/type_ascription_static_lifetime.rs:6:33 | +LL | let x = 22_u32; + | - binding `x` declared here LL | let y: &u32 = type_ascribe!(&x, &'static u32); | --------------^^--------------- | | | diff --git a/tests/ui/parser/anon-enums.rs b/tests/ui/parser/anon-enums.rs new file mode 100644 index 00000000000..56b8a3d43be --- /dev/null +++ b/tests/ui/parser/anon-enums.rs @@ -0,0 +1,17 @@ +fn foo(x: bool | i32) -> i32 | f64 { +//~^ ERROR anonymous enums are not supported +//~| ERROR anonymous enums are not supported + match x { + x: i32 => x, //~ ERROR expected + true => 42., + false => 0.333, + } +} + +fn main() { + match foo(true) { + 42: i32 => (), //~ ERROR expected + _: f64 => (), //~ ERROR expected + x: i32 => (), //~ ERROR expected + } +} diff --git a/tests/ui/parser/anon-enums.stderr b/tests/ui/parser/anon-enums.stderr new file mode 100644 index 00000000000..84158225660 --- /dev/null +++ b/tests/ui/parser/anon-enums.stderr @@ -0,0 +1,68 @@ +error: anonymous enums are not supported + --> $DIR/anon-enums.rs:1:16 + | +LL | fn foo(x: bool | i32) -> i32 | f64 { + | ---- ^ --- + | + = help: create a named `enum` and use it here instead: + enum Name { + Variant1(bool), + Variant2(i32), + } + +error: anonymous enums are not supported + --> $DIR/anon-enums.rs:1:30 + | +LL | fn foo(x: bool | i32) -> i32 | f64 { + | --- ^ --- + | + = help: create a named `enum` and use it here instead: + enum Name { + Variant1(i32), + Variant2(f64), + } + +error: expected one of `@` or `|`, found `:` + --> $DIR/anon-enums.rs:5:10 + | +LL | x: i32 => x, + | ^ --- specifying the type of a pattern isn't supported + | | + | expected one of `@` or `|` + | +help: maybe write a path separator here + | +LL | x::i32 => x, + | ~~ + +error: expected one of `...`, `..=`, `..`, or `|`, found `:` + --> $DIR/anon-enums.rs:13:11 + | +LL | 42: i32 => (), + | ^ --- specifying the type of a pattern isn't supported + | | + | expected one of `...`, `..=`, `..`, or `|` + +error: expected `|`, found `:` + --> $DIR/anon-enums.rs:14:10 + | +LL | _: f64 => (), + | ^ --- specifying the type of a pattern isn't supported + | | + | expected `|` + +error: expected one of `@` or `|`, found `:` + --> $DIR/anon-enums.rs:15:10 + | +LL | x: i32 => (), + | ^ --- specifying the type of a pattern isn't supported + | | + | expected one of `@` or `|` + | +help: maybe write a path separator here + | +LL | x::i32 => (), + | ~~ + +error: aborting due to 6 previous errors + diff --git a/tests/ui/parser/fake-anon-enums-in-macros.rs b/tests/ui/parser/fake-anon-enums-in-macros.rs new file mode 100644 index 00000000000..38fe8dee238 --- /dev/null +++ b/tests/ui/parser/fake-anon-enums-in-macros.rs @@ -0,0 +1,20 @@ +// build-pass +macro_rules! check_ty { + ($Z:ty) => { compile_error!("triggered"); }; + ($X:ty | $Y:ty) => { $X }; +} + +macro_rules! check { + ($Z:ty) => { compile_error!("triggered"); }; + ($X:ty | $Y:ty) => { }; +} + +check! { i32 | u8 } + +fn foo(x: check_ty! { i32 | u8 }) -> check_ty! { i32 | u8 } { + x +} +fn main() { + let x: check_ty! { i32 | u8 } = 42; + let _: check_ty! { i32 | u8 } = foo(x); +} diff --git a/tests/ui/parser/issues/issue-87086-colon-path-sep.rs b/tests/ui/parser/issues/issue-87086-colon-path-sep.rs index 0b7b67496d6..e1ea38f2795 100644 --- a/tests/ui/parser/issues/issue-87086-colon-path-sep.rs +++ b/tests/ui/parser/issues/issue-87086-colon-path-sep.rs @@ -68,7 +68,6 @@ fn main() { Foo:Bar::Baz => {} //~^ ERROR: expected one of //~| HELP: maybe write a path separator here - //~| ERROR: failed to resolve: `Bar` is a variant, not a module } match myfoo { Foo::Bar => {} diff --git a/tests/ui/parser/issues/issue-87086-colon-path-sep.stderr b/tests/ui/parser/issues/issue-87086-colon-path-sep.stderr index 2050a16beb3..63b072ac4cd 100644 --- a/tests/ui/parser/issues/issue-87086-colon-path-sep.stderr +++ b/tests/ui/parser/issues/issue-87086-colon-path-sep.stderr @@ -2,89 +2,118 @@ error: expected one of `@` or `|`, found `:` --> $DIR/issue-87086-colon-path-sep.rs:17:12 | LL | Foo:Bar => {} - | ^ + | ^--- specifying the type of a pattern isn't supported | | | expected one of `@` or `|` - | help: maybe write a path separator here: `::` + | +help: maybe write a path separator here + | +LL | Foo::Bar => {} + | ~~ error: expected one of `!`, `(`, `...`, `..=`, `..`, `::`, `{`, or `|`, found `:` --> $DIR/issue-87086-colon-path-sep.rs:23:17 | LL | qux::Foo:Bar => {} - | ^ + | ^--- specifying the type of a pattern isn't supported | | | expected one of 8 possible tokens - | help: maybe write a path separator here: `::` + | +help: maybe write a path separator here + | +LL | qux::Foo::Bar => {} + | ~~ error: expected one of `@` or `|`, found `:` --> $DIR/issue-87086-colon-path-sep.rs:29:12 | LL | qux:Foo::Baz => {} - | ^ + | ^-------- specifying the type of a pattern isn't supported | | | expected one of `@` or `|` - | help: maybe write a path separator here: `::` + | +help: maybe write a path separator here + | +LL | qux::Foo::Baz => {} + | ~~ error: expected one of `@` or `|`, found `:` --> $DIR/issue-87086-colon-path-sep.rs:35:12 | LL | qux: Foo::Baz if true => {} - | ^ + | ^ -------- specifying the type of a pattern isn't supported | | | expected one of `@` or `|` - | help: maybe write a path separator here: `::` + | +help: maybe write a path separator here + | +LL | qux::Foo::Baz if true => {} + | ~~ error: expected one of `@` or `|`, found `:` --> $DIR/issue-87086-colon-path-sep.rs:40:15 | LL | if let Foo:Bar = f() { - | ^ + | ^--- specifying the type of a pattern isn't supported | | | expected one of `@` or `|` - | help: maybe write a path separator here: `::` + | +help: maybe write a path separator here + | +LL | if let Foo::Bar = f() { + | ~~ error: expected one of `@` or `|`, found `:` --> $DIR/issue-87086-colon-path-sep.rs:48:16 | LL | ref qux: Foo::Baz => {} - | ^ + | ^ -------- specifying the type of a pattern isn't supported | | | expected one of `@` or `|` - | help: maybe write a path separator here: `::` + | +help: maybe write a path separator here + | +LL | ref qux::Foo::Baz => {} + | ~~ error: expected one of `@` or `|`, found `:` --> $DIR/issue-87086-colon-path-sep.rs:57:16 | LL | mut qux: Foo::Baz => {} - | ^ + | ^ -------- specifying the type of a pattern isn't supported | | | expected one of `@` or `|` - | help: maybe write a path separator here: `::` + | +help: maybe write a path separator here + | +LL | mut qux::Foo::Baz => {} + | ~~ error: expected one of `@` or `|`, found `:` --> $DIR/issue-87086-colon-path-sep.rs:68:12 | LL | Foo:Bar::Baz => {} - | ^ + | ^-------- specifying the type of a pattern isn't supported | | | expected one of `@` or `|` - | help: maybe write a path separator here: `::` + | +help: maybe write a path separator here + | +LL | Foo::Bar::Baz => {} + | ~~ error: expected one of `@` or `|`, found `:` - --> $DIR/issue-87086-colon-path-sep.rs:75:12 + --> $DIR/issue-87086-colon-path-sep.rs:74:12 | LL | Foo:Bar => {} - | ^ + | ^--- specifying the type of a pattern isn't supported | | | expected one of `@` or `|` - | help: maybe write a path separator here: `::` - -error[E0433]: failed to resolve: `Bar` is a variant, not a module - --> $DIR/issue-87086-colon-path-sep.rs:68:13 | -LL | Foo:Bar::Baz => {} - | ^^^ `Bar` is a variant, not a module +help: maybe write a path separator here + | +LL | Foo::Bar => {} + | ~~ -error: aborting due to 10 previous errors +error: aborting due to 9 previous errors -For more information about this error, try `rustc --explain E0433`. diff --git a/tests/ui/parser/recover-unticked-labels.fixed b/tests/ui/parser/recover-unticked-labels.fixed new file mode 100644 index 00000000000..159d995b8da --- /dev/null +++ b/tests/ui/parser/recover-unticked-labels.fixed @@ -0,0 +1,7 @@ +// run-rustfix + +fn main() { + 'label: loop { break 'label }; //~ error: cannot find value `label` in this scope + 'label: loop { break 'label 0 }; //~ error: expected a label, found an identifier + 'label: loop { continue 'label }; //~ error: expected a label, found an identifier +} diff --git a/tests/ui/parser/recover-unticked-labels.rs b/tests/ui/parser/recover-unticked-labels.rs new file mode 100644 index 00000000000..56034de6844 --- /dev/null +++ b/tests/ui/parser/recover-unticked-labels.rs @@ -0,0 +1,7 @@ +// run-rustfix + +fn main() { + 'label: loop { break label }; //~ error: cannot find value `label` in this scope + 'label: loop { break label 0 }; //~ error: expected a label, found an identifier + 'label: loop { continue label }; //~ error: expected a label, found an identifier +} diff --git a/tests/ui/parser/recover-unticked-labels.stderr b/tests/ui/parser/recover-unticked-labels.stderr new file mode 100644 index 00000000000..c115dffb10e --- /dev/null +++ b/tests/ui/parser/recover-unticked-labels.stderr @@ -0,0 +1,25 @@ +error: expected a label, found an identifier + --> $DIR/recover-unticked-labels.rs:5:26 + | +LL | 'label: loop { break label 0 }; + | ^^^^^ help: labels start with a tick: `'label` + +error: expected a label, found an identifier + --> $DIR/recover-unticked-labels.rs:6:29 + | +LL | 'label: loop { continue label }; + | ^^^^^ help: labels start with a tick: `'label` + +error[E0425]: cannot find value `label` in this scope + --> $DIR/recover-unticked-labels.rs:4:26 + | +LL | 'label: loop { break label }; + | ------ ^^^^^ + | | | + | | not found in this scope + | | help: use the similarly named label: `'label` + | a label with a similar name exists + +error: aborting due to 3 previous errors + +For more information about this error, try `rustc --explain E0425`. diff --git a/tests/ui/parser/unicode-chars.rs b/tests/ui/parser/unicode-chars.rs index f0122561f46..cd25c756689 100644 --- a/tests/ui/parser/unicode-chars.rs +++ b/tests/ui/parser/unicode-chars.rs @@ -6,4 +6,7 @@ fn main() { //~^ ERROR unknown start of token: \u{a0} //~^^ NOTE character appears 3 more times //~^^^ HELP Unicode character ' ' (No-Break Space) looks like ' ' (Space), but it is not + let _ = 1 ⩵ 2; + //~^ ERROR unknown start of token + //~^^ HELP Unicode character '⩵' (Two Consecutive Equals Signs) looks like '==' (Double Equals Sign), but it is not } diff --git a/tests/ui/parser/unicode-chars.stderr b/tests/ui/parser/unicode-chars.stderr index b1d4a0af711..086de5ec099 100644 --- a/tests/ui/parser/unicode-chars.stderr +++ b/tests/ui/parser/unicode-chars.stderr @@ -21,5 +21,16 @@ help: Unicode character ' ' (No-Break Space) looks like ' ' (Space), but it is LL | let x = 0; | ++++ -error: aborting due to 2 previous errors +error: unknown start of token: \u{2a75} + --> $DIR/unicode-chars.rs:9:15 + | +LL | let _ = 1 ⩵ 2; + | ^ + | +help: Unicode character '⩵' (Two Consecutive Equals Signs) looks like '==' (Double Equals Sign), but it is not + | +LL | let _ = 1 == 2; + | ~~ + +error: aborting due to 3 previous errors diff --git a/tests/ui/pattern/issue-14221.rs b/tests/ui/pattern/issue-14221.rs index 282c4111369..13427d2c9b2 100644 --- a/tests/ui/pattern/issue-14221.rs +++ b/tests/ui/pattern/issue-14221.rs @@ -11,9 +11,9 @@ pub mod b { pub fn key(e: ::E) -> &'static str { match e { A => "A", -//~^ WARN pattern binding `A` is named the same as one of the variants of the type `E` +//~^ ERROR pattern binding `A` is named the same as one of the variants of the type `E` B => "B", //~ ERROR: unreachable pattern -//~^ WARN pattern binding `B` is named the same as one of the variants of the type `E` +//~^ ERROR pattern binding `B` is named the same as one of the variants of the type `E` } } } diff --git a/tests/ui/pattern/issue-14221.stderr b/tests/ui/pattern/issue-14221.stderr index fc8ae1ed7b5..7ea51b5f804 100644 --- a/tests/ui/pattern/issue-14221.stderr +++ b/tests/ui/pattern/issue-14221.stderr @@ -1,12 +1,12 @@ -warning[E0170]: pattern binding `A` is named the same as one of the variants of the type `E` +error[E0170]: pattern binding `A` is named the same as one of the variants of the type `E` --> $DIR/issue-14221.rs:13:13 | LL | A => "A", | ^ help: to match on the variant, qualify the path: `E::A` | - = note: `#[warn(bindings_with_variant_name)]` on by default + = note: `#[deny(bindings_with_variant_name)]` on by default -warning[E0170]: pattern binding `B` is named the same as one of the variants of the type `E` +error[E0170]: pattern binding `B` is named the same as one of the variants of the type `E` --> $DIR/issue-14221.rs:15:13 | LL | B => "B", @@ -27,6 +27,6 @@ note: the lint level is defined here LL | #![deny(unreachable_patterns)] | ^^^^^^^^^^^^^^^^^^^^ -error: aborting due to previous error; 2 warnings emitted +error: aborting due to 3 previous errors For more information about this error, try `rustc --explain E0170`. diff --git a/tests/ui/pattern/issue-67776-match-same-name-enum-variant-refs.rs b/tests/ui/pattern/issue-67776-match-same-name-enum-variant-refs.rs index 6fd5768a5a2..05d097eaf14 100644 --- a/tests/ui/pattern/issue-67776-match-same-name-enum-variant-refs.rs +++ b/tests/ui/pattern/issue-67776-match-same-name-enum-variant-refs.rs @@ -1,7 +1,5 @@ // Test for issue #67776: binding named the same as enum variant -// should report a warning even when matching against a reference type - -// check-pass +// should report an error even when matching against a reference type #![allow(unused_variables)] #![allow(non_snake_case)] @@ -15,27 +13,27 @@ enum Foo { fn fn1(e: Foo) { match e { Bar => {}, - //~^ WARNING named the same as one of the variants of the type `Foo` + //~^ ERROR named the same as one of the variants of the type `Foo` Baz => {}, - //~^ WARNING named the same as one of the variants of the type `Foo` + //~^ ERROR named the same as one of the variants of the type `Foo` } } fn fn2(e: &Foo) { match e { Bar => {}, - //~^ WARNING named the same as one of the variants of the type `Foo` + //~^ ERROR named the same as one of the variants of the type `Foo` Baz => {}, - //~^ WARNING named the same as one of the variants of the type `Foo` + //~^ ERROR named the same as one of the variants of the type `Foo` } } fn fn3(e: &mut &&mut Foo) { match e { Bar => {}, - //~^ WARNING named the same as one of the variants of the type `Foo` + //~^ ERROR named the same as one of the variants of the type `Foo` Baz => {}, - //~^ WARNING named the same as one of the variants of the type `Foo` + //~^ ERROR named the same as one of the variants of the type `Foo` } } diff --git a/tests/ui/pattern/issue-67776-match-same-name-enum-variant-refs.stderr b/tests/ui/pattern/issue-67776-match-same-name-enum-variant-refs.stderr index 6f3613b63c9..da580c7accb 100644 --- a/tests/ui/pattern/issue-67776-match-same-name-enum-variant-refs.stderr +++ b/tests/ui/pattern/issue-67776-match-same-name-enum-variant-refs.stderr @@ -1,41 +1,41 @@ -warning[E0170]: pattern binding `Bar` is named the same as one of the variants of the type `Foo` - --> $DIR/issue-67776-match-same-name-enum-variant-refs.rs:17:9 +error[E0170]: pattern binding `Bar` is named the same as one of the variants of the type `Foo` + --> $DIR/issue-67776-match-same-name-enum-variant-refs.rs:15:9 | LL | Bar => {}, | ^^^ help: to match on the variant, qualify the path: `Foo::Bar` | - = note: `#[warn(bindings_with_variant_name)]` on by default + = note: `#[deny(bindings_with_variant_name)]` on by default -warning[E0170]: pattern binding `Baz` is named the same as one of the variants of the type `Foo` - --> $DIR/issue-67776-match-same-name-enum-variant-refs.rs:19:9 +error[E0170]: pattern binding `Baz` is named the same as one of the variants of the type `Foo` + --> $DIR/issue-67776-match-same-name-enum-variant-refs.rs:17:9 | LL | Baz => {}, | ^^^ help: to match on the variant, qualify the path: `Foo::Baz` -warning[E0170]: pattern binding `Bar` is named the same as one of the variants of the type `Foo` - --> $DIR/issue-67776-match-same-name-enum-variant-refs.rs:26:9 +error[E0170]: pattern binding `Bar` is named the same as one of the variants of the type `Foo` + --> $DIR/issue-67776-match-same-name-enum-variant-refs.rs:24:9 | LL | Bar => {}, | ^^^ help: to match on the variant, qualify the path: `Foo::Bar` -warning[E0170]: pattern binding `Baz` is named the same as one of the variants of the type `Foo` - --> $DIR/issue-67776-match-same-name-enum-variant-refs.rs:28:9 +error[E0170]: pattern binding `Baz` is named the same as one of the variants of the type `Foo` + --> $DIR/issue-67776-match-same-name-enum-variant-refs.rs:26:9 | LL | Baz => {}, | ^^^ help: to match on the variant, qualify the path: `Foo::Baz` -warning[E0170]: pattern binding `Bar` is named the same as one of the variants of the type `Foo` - --> $DIR/issue-67776-match-same-name-enum-variant-refs.rs:35:9 +error[E0170]: pattern binding `Bar` is named the same as one of the variants of the type `Foo` + --> $DIR/issue-67776-match-same-name-enum-variant-refs.rs:33:9 | LL | Bar => {}, | ^^^ help: to match on the variant, qualify the path: `Foo::Bar` -warning[E0170]: pattern binding `Baz` is named the same as one of the variants of the type `Foo` - --> $DIR/issue-67776-match-same-name-enum-variant-refs.rs:37:9 +error[E0170]: pattern binding `Baz` is named the same as one of the variants of the type `Foo` + --> $DIR/issue-67776-match-same-name-enum-variant-refs.rs:35:9 | LL | Baz => {}, | ^^^ help: to match on the variant, qualify the path: `Foo::Baz` -warning: 6 warnings emitted +error: aborting due to 6 previous errors For more information about this error, try `rustc --explain E0170`. diff --git a/tests/ui/pattern/move-ref-patterns/borrowck-move-ref-pattern.stderr b/tests/ui/pattern/move-ref-patterns/borrowck-move-ref-pattern.stderr index 1b93267b397..c7c7c074f7c 100644 --- a/tests/ui/pattern/move-ref-patterns/borrowck-move-ref-pattern.stderr +++ b/tests/ui/pattern/move-ref-patterns/borrowck-move-ref-pattern.stderr @@ -1,6 +1,8 @@ error[E0505]: cannot move out of `arr[..]` because it is borrowed --> $DIR/borrowck-move-ref-pattern.rs:8:24 | +LL | let mut arr = [U, U, U, U, U]; + | ------- binding `arr` declared here LL | let hold_all = &arr; | ---- borrow of `arr` occurs here LL | let [ref _x0_hold, _x1, ref xs_hold @ ..] = arr; diff --git a/tests/ui/proc-macro/allowed-signatures.rs b/tests/ui/proc-macro/allowed-signatures.rs new file mode 100644 index 00000000000..86850876112 --- /dev/null +++ b/tests/ui/proc-macro/allowed-signatures.rs @@ -0,0 +1,26 @@ +// check-pass +// force-host +// no-prefer-dynamic + +#![crate_type = "proc-macro"] +#![allow(private_in_public)] +extern crate proc_macro; +use proc_macro::TokenStream; + +#[proc_macro] +pub fn foo<T>(t: T) -> TokenStream { + TokenStream::new() +} + +trait Project { + type Assoc; +} + +impl Project for () { + type Assoc = TokenStream; +} + +#[proc_macro] +pub fn uwu(_input: <() as Project>::Assoc) -> <() as Project>::Assoc { + TokenStream::new() +} diff --git a/tests/ui/proc-macro/expand-expr.rs b/tests/ui/proc-macro/expand-expr.rs index 901b3a95102..700aac41c44 100644 --- a/tests/ui/proc-macro/expand-expr.rs +++ b/tests/ui/proc-macro/expand-expr.rs @@ -1,4 +1,6 @@ // aux-build:expand-expr.rs +// no-remap-src-base: check_expand_expr_file!() fails when enabled. + #![feature(concat_bytes)] extern crate expand_expr; @@ -8,7 +10,7 @@ use expand_expr::{ // Check builtin macros can be expanded. -expand_expr_is!(11u32, line!()); +expand_expr_is!(13u32, line!()); expand_expr_is!(24u32, column!()); expand_expr_is!("Hello, World!", concat!("Hello, ", "World", "!")); diff --git a/tests/ui/proc-macro/expand-expr.stderr b/tests/ui/proc-macro/expand-expr.stderr index 0004f2fe17f..df61e997289 100644 --- a/tests/ui/proc-macro/expand-expr.stderr +++ b/tests/ui/proc-macro/expand-expr.stderr @@ -1,29 +1,29 @@ error: expected one of `.`, `?`, or an operator, found `;` - --> $DIR/expand-expr.rs:106:27 + --> $DIR/expand-expr.rs:108:27 | LL | expand_expr_fail!("string"; hello); | ^ expected one of `.`, `?`, or an operator error: expected expression, found `$` - --> $DIR/expand-expr.rs:109:19 + --> $DIR/expand-expr.rs:111:19 | LL | expand_expr_fail!($); | ^ expected expression error: expected expression, found `$` - --> $DIR/expand-expr.rs:38:23 + --> $DIR/expand-expr.rs:40:23 | LL | ($($t:tt)*) => { $($t)* }; | ^^^^ expected expression error: expected expression, found `$` - --> $DIR/expand-expr.rs:111:28 + --> $DIR/expand-expr.rs:113:28 | LL | expand_expr_fail!(echo_pm!($)); | ^ expected expression error: macro expansion ignores token `hello` and any following - --> $DIR/expand-expr.rs:115:47 + --> $DIR/expand-expr.rs:117:47 | LL | expand_expr_is!("string", echo_tts!("string"; hello)); | --------------------^^^^^- caused by the macro expansion here @@ -35,7 +35,7 @@ LL | expand_expr_is!("string", echo_tts!("string"; hello);); | + error: macro expansion ignores token `;` and any following - --> $DIR/expand-expr.rs:116:44 + --> $DIR/expand-expr.rs:118:44 | LL | expand_expr_is!("string", echo_pm!("string"; hello)); | -----------------^------- caused by the macro expansion here @@ -47,7 +47,7 @@ LL | expand_expr_is!("string", echo_pm!("string"; hello);); | + error: recursion limit reached while expanding `recursive_expand!` - --> $DIR/expand-expr.rs:124:16 + --> $DIR/expand-expr.rs:126:16 | LL | const _: u32 = recursive_expand!(); | ^^^^^^^^^^^^^^^^^^^ diff --git a/tests/ui/proc-macro/generate-mod.rs b/tests/ui/proc-macro/generate-mod.rs index 9eea630c310..471f317edf9 100644 --- a/tests/ui/proc-macro/generate-mod.rs +++ b/tests/ui/proc-macro/generate-mod.rs @@ -15,16 +15,19 @@ struct S; #[derive(generate_mod::CheckDerive)] //~ ERROR cannot find type `FromOutside` in this scope //~| ERROR cannot find type `OuterDerive` in this scope + //~| WARN this was previously accepted + //~| WARN this was previously accepted struct Z; fn inner_block() { #[derive(generate_mod::CheckDerive)] //~ ERROR cannot find type `FromOutside` in this scope //~| ERROR cannot find type `OuterDerive` in this scope + //~| WARN this was previously accepted + //~| WARN this was previously accepted struct InnerZ; } -#[derive(generate_mod::CheckDeriveLint)] //~ ERROR cannot find type `OuterDeriveLint` in this scope - //~| ERROR cannot find type `FromOutside` in this scope +#[derive(generate_mod::CheckDeriveLint)] // OK, lint is suppressed struct W; fn main() {} diff --git a/tests/ui/proc-macro/generate-mod.stderr b/tests/ui/proc-macro/generate-mod.stderr index 2c55abf38c3..db629b5b5e2 100644 --- a/tests/ui/proc-macro/generate-mod.stderr +++ b/tests/ui/proc-macro/generate-mod.stderr @@ -38,66 +38,127 @@ LL | #[generate_mod::check_attr] OuterAttr = note: this error originates in the attribute macro `generate_mod::check_attr` (in Nightly builds, run with -Z macro-backtrace for more info) -error[E0412]: cannot find type `FromOutside` in this scope +error: cannot find type `FromOutside` in this scope --> $DIR/generate-mod.rs:16:10 | LL | #[derive(generate_mod::CheckDerive)] - | ^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope + | ^^^^^^^^^^^^^^^^^^^^^^^^^ names from parent modules are not accessible without an explicit import | - = help: consider importing this struct: - FromOutside + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #83583 <https://github.com/rust-lang/rust/issues/83583> + = note: `#[deny(proc_macro_derive_resolution_fallback)]` on by default = note: this error originates in the derive macro `generate_mod::CheckDerive` (in Nightly builds, run with -Z macro-backtrace for more info) -error[E0412]: cannot find type `OuterDerive` in this scope +error: cannot find type `OuterDerive` in this scope --> $DIR/generate-mod.rs:16:10 | LL | #[derive(generate_mod::CheckDerive)] - | ^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope + | ^^^^^^^^^^^^^^^^^^^^^^^^^ names from parent modules are not accessible without an explicit import | - = help: consider importing this struct: - OuterDerive + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #83583 <https://github.com/rust-lang/rust/issues/83583> = note: this error originates in the derive macro `generate_mod::CheckDerive` (in Nightly builds, run with -Z macro-backtrace for more info) -error[E0412]: cannot find type `FromOutside` in this scope - --> $DIR/generate-mod.rs:21:14 +error: cannot find type `FromOutside` in this scope + --> $DIR/generate-mod.rs:23:14 | LL | #[derive(generate_mod::CheckDerive)] - | ^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope + | ^^^^^^^^^^^^^^^^^^^^^^^^^ names from parent modules are not accessible without an explicit import | - = help: consider importing this struct: - FromOutside + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #83583 <https://github.com/rust-lang/rust/issues/83583> = note: this error originates in the derive macro `generate_mod::CheckDerive` (in Nightly builds, run with -Z macro-backtrace for more info) -error[E0412]: cannot find type `OuterDerive` in this scope - --> $DIR/generate-mod.rs:21:14 +error: cannot find type `OuterDerive` in this scope + --> $DIR/generate-mod.rs:23:14 | LL | #[derive(generate_mod::CheckDerive)] - | ^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope + | ^^^^^^^^^^^^^^^^^^^^^^^^^ names from parent modules are not accessible without an explicit import | - = help: consider importing this struct: - OuterDerive + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #83583 <https://github.com/rust-lang/rust/issues/83583> = note: this error originates in the derive macro `generate_mod::CheckDerive` (in Nightly builds, run with -Z macro-backtrace for more info) -error[E0412]: cannot find type `FromOutside` in this scope - --> $DIR/generate-mod.rs:26:10 +error: aborting due to 8 previous errors + +For more information about this error, try `rustc --explain E0412`. +Future incompatibility report: Future breakage diagnostic: +error: cannot find type `FromOutside` in this scope + --> $DIR/generate-mod.rs:16:10 | -LL | #[derive(generate_mod::CheckDeriveLint)] - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope +LL | #[derive(generate_mod::CheckDerive)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^ names from parent modules are not accessible without an explicit import | - = help: consider importing this struct: - FromOutside - = note: this error originates in the derive macro `generate_mod::CheckDeriveLint` (in Nightly builds, run with -Z macro-backtrace for more info) + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #83583 <https://github.com/rust-lang/rust/issues/83583> + = note: `#[deny(proc_macro_derive_resolution_fallback)]` on by default + = note: this error originates in the derive macro `generate_mod::CheckDerive` (in Nightly builds, run with -Z macro-backtrace for more info) -error[E0412]: cannot find type `OuterDeriveLint` in this scope - --> $DIR/generate-mod.rs:26:10 +Future breakage diagnostic: +error: cannot find type `OuterDerive` in this scope + --> $DIR/generate-mod.rs:16:10 | -LL | #[derive(generate_mod::CheckDeriveLint)] - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope +LL | #[derive(generate_mod::CheckDerive)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^ names from parent modules are not accessible without an explicit import | - = help: consider importing this struct: - OuterDeriveLint - = note: this error originates in the derive macro `generate_mod::CheckDeriveLint` (in Nightly builds, run with -Z macro-backtrace for more info) + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #83583 <https://github.com/rust-lang/rust/issues/83583> + = note: `#[deny(proc_macro_derive_resolution_fallback)]` on by default + = note: this error originates in the derive macro `generate_mod::CheckDerive` (in Nightly builds, run with -Z macro-backtrace for more info) -error: aborting due to 10 previous errors +Future breakage diagnostic: +error: cannot find type `FromOutside` in this scope + --> $DIR/generate-mod.rs:23:14 + | +LL | #[derive(generate_mod::CheckDerive)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^ names from parent modules are not accessible without an explicit import + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #83583 <https://github.com/rust-lang/rust/issues/83583> + = note: `#[deny(proc_macro_derive_resolution_fallback)]` on by default + = note: this error originates in the derive macro `generate_mod::CheckDerive` (in Nightly builds, run with -Z macro-backtrace for more info) + +Future breakage diagnostic: +error: cannot find type `OuterDerive` in this scope + --> $DIR/generate-mod.rs:23:14 + | +LL | #[derive(generate_mod::CheckDerive)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^ names from parent modules are not accessible without an explicit import + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #83583 <https://github.com/rust-lang/rust/issues/83583> + = note: `#[deny(proc_macro_derive_resolution_fallback)]` on by default + = note: this error originates in the derive macro `generate_mod::CheckDerive` (in Nightly builds, run with -Z macro-backtrace for more info) + +Future breakage diagnostic: +warning: cannot find type `FromOutside` in this scope + --> $DIR/generate-mod.rs:30:10 + | +LL | #[derive(generate_mod::CheckDeriveLint)] // OK, lint is suppressed + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ names from parent modules are not accessible without an explicit import + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #83583 <https://github.com/rust-lang/rust/issues/83583> +note: the lint level is defined here + --> $DIR/generate-mod.rs:30:10 + | +LL | #[derive(generate_mod::CheckDeriveLint)] // OK, lint is suppressed + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + = note: this warning originates in the derive macro `generate_mod::CheckDeriveLint` (in Nightly builds, run with -Z macro-backtrace for more info) + +Future breakage diagnostic: +warning: cannot find type `OuterDeriveLint` in this scope + --> $DIR/generate-mod.rs:30:10 + | +LL | #[derive(generate_mod::CheckDeriveLint)] // OK, lint is suppressed + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ names from parent modules are not accessible without an explicit import + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #83583 <https://github.com/rust-lang/rust/issues/83583> +note: the lint level is defined here + --> $DIR/generate-mod.rs:30:10 + | +LL | #[derive(generate_mod::CheckDeriveLint)] // OK, lint is suppressed + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + = note: this warning originates in the derive macro `generate_mod::CheckDeriveLint` (in Nightly builds, run with -Z macro-backtrace for more info) -For more information about this error, try `rustc --explain E0412`. diff --git a/tests/ui/proc-macro/pretty-print-hack-show.remapped.stderr b/tests/ui/proc-macro/pretty-print-hack-show.remapped.stderr index ab501384889..873054927c9 100644 --- a/tests/ui/proc-macro/pretty-print-hack-show.remapped.stderr +++ b/tests/ui/proc-macro/pretty-print-hack-show.remapped.stderr @@ -1,5 +1,5 @@ error: using an old version of `rental` - --> remapped/proc-macro/pretty-print-hack/allsorts-rental-0.5.6/src/lib.rs:4:6 + --> $DIR/pretty-print-hack/allsorts-rental-0.5.6/src/lib.rs:4:6 | LL | enum ProceduralMasqueradeDummyType { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -10,7 +10,7 @@ LL | enum ProceduralMasqueradeDummyType { = note: `#[deny(proc_macro_back_compat)]` on by default error: using an old version of `rental` - --> remapped/proc-macro/pretty-print-hack/allsorts-rental-0.5.6/src/lib.rs:4:6 + --> $DIR/pretty-print-hack/allsorts-rental-0.5.6/src/lib.rs:4:6 | LL | enum ProceduralMasqueradeDummyType { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -20,7 +20,7 @@ LL | enum ProceduralMasqueradeDummyType { = note: older versions of the `rental` crate will stop compiling in future versions of Rust; please update to `rental` v0.5.6, or switch to one of the `rental` alternatives error: using an old version of `rental` - --> remapped/proc-macro/pretty-print-hack/allsorts-rental-0.5.6/src/lib.rs:4:6 + --> $DIR/pretty-print-hack/allsorts-rental-0.5.6/src/lib.rs:4:6 | LL | enum ProceduralMasqueradeDummyType { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -30,7 +30,7 @@ LL | enum ProceduralMasqueradeDummyType { = note: older versions of the `rental` crate will stop compiling in future versions of Rust; please update to `rental` v0.5.6, or switch to one of the `rental` alternatives error: using an old version of `rental` - --> remapped/proc-macro/pretty-print-hack/allsorts-rental-0.5.6/src/lib.rs:4:6 + --> $DIR/pretty-print-hack/allsorts-rental-0.5.6/src/lib.rs:4:6 | LL | enum ProceduralMasqueradeDummyType { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -40,7 +40,7 @@ LL | enum ProceduralMasqueradeDummyType { = note: older versions of the `rental` crate will stop compiling in future versions of Rust; please update to `rental` v0.5.6, or switch to one of the `rental` alternatives error: using an old version of `rental` - --> remapped/proc-macro/pretty-print-hack/rental-0.5.5/src/lib.rs:4:6 + --> $DIR/pretty-print-hack/rental-0.5.5/src/lib.rs:4:6 | LL | enum ProceduralMasqueradeDummyType { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -50,7 +50,7 @@ LL | enum ProceduralMasqueradeDummyType { = note: older versions of the `rental` crate will stop compiling in future versions of Rust; please update to `rental` v0.5.6, or switch to one of the `rental` alternatives error: using an old version of `rental` - --> remapped/proc-macro/pretty-print-hack/rental-0.5.5/src/lib.rs:4:6 + --> $DIR/pretty-print-hack/rental-0.5.5/src/lib.rs:4:6 | LL | enum ProceduralMasqueradeDummyType { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -60,7 +60,7 @@ LL | enum ProceduralMasqueradeDummyType { = note: older versions of the `rental` crate will stop compiling in future versions of Rust; please update to `rental` v0.5.6, or switch to one of the `rental` alternatives error: using an old version of `rental` - --> remapped/proc-macro/pretty-print-hack/rental-0.5.5/src/lib.rs:4:6 + --> $DIR/pretty-print-hack/rental-0.5.5/src/lib.rs:4:6 | LL | enum ProceduralMasqueradeDummyType { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -70,7 +70,7 @@ LL | enum ProceduralMasqueradeDummyType { = note: older versions of the `rental` crate will stop compiling in future versions of Rust; please update to `rental` v0.5.6, or switch to one of the `rental` alternatives error: using an old version of `rental` - --> remapped/proc-macro/pretty-print-hack/rental-0.5.5/src/lib.rs:4:6 + --> $DIR/pretty-print-hack/rental-0.5.5/src/lib.rs:4:6 | LL | enum ProceduralMasqueradeDummyType { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -83,7 +83,7 @@ error: aborting due to 8 previous errors Future incompatibility report: Future breakage diagnostic: error: using an old version of `rental` - --> remapped/proc-macro/pretty-print-hack/allsorts-rental-0.5.6/src/lib.rs:4:6 + --> $DIR/pretty-print-hack/allsorts-rental-0.5.6/src/lib.rs:4:6 | LL | enum ProceduralMasqueradeDummyType { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -95,7 +95,7 @@ LL | enum ProceduralMasqueradeDummyType { Future breakage diagnostic: error: using an old version of `rental` - --> remapped/proc-macro/pretty-print-hack/allsorts-rental-0.5.6/src/lib.rs:4:6 + --> $DIR/pretty-print-hack/allsorts-rental-0.5.6/src/lib.rs:4:6 | LL | enum ProceduralMasqueradeDummyType { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -107,7 +107,7 @@ LL | enum ProceduralMasqueradeDummyType { Future breakage diagnostic: error: using an old version of `rental` - --> remapped/proc-macro/pretty-print-hack/allsorts-rental-0.5.6/src/lib.rs:4:6 + --> $DIR/pretty-print-hack/allsorts-rental-0.5.6/src/lib.rs:4:6 | LL | enum ProceduralMasqueradeDummyType { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -119,7 +119,7 @@ LL | enum ProceduralMasqueradeDummyType { Future breakage diagnostic: error: using an old version of `rental` - --> remapped/proc-macro/pretty-print-hack/allsorts-rental-0.5.6/src/lib.rs:4:6 + --> $DIR/pretty-print-hack/allsorts-rental-0.5.6/src/lib.rs:4:6 | LL | enum ProceduralMasqueradeDummyType { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -131,7 +131,7 @@ LL | enum ProceduralMasqueradeDummyType { Future breakage diagnostic: error: using an old version of `rental` - --> remapped/proc-macro/pretty-print-hack/rental-0.5.5/src/lib.rs:4:6 + --> $DIR/pretty-print-hack/rental-0.5.5/src/lib.rs:4:6 | LL | enum ProceduralMasqueradeDummyType { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -143,7 +143,7 @@ LL | enum ProceduralMasqueradeDummyType { Future breakage diagnostic: error: using an old version of `rental` - --> remapped/proc-macro/pretty-print-hack/rental-0.5.5/src/lib.rs:4:6 + --> $DIR/pretty-print-hack/rental-0.5.5/src/lib.rs:4:6 | LL | enum ProceduralMasqueradeDummyType { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -155,7 +155,7 @@ LL | enum ProceduralMasqueradeDummyType { Future breakage diagnostic: error: using an old version of `rental` - --> remapped/proc-macro/pretty-print-hack/rental-0.5.5/src/lib.rs:4:6 + --> $DIR/pretty-print-hack/rental-0.5.5/src/lib.rs:4:6 | LL | enum ProceduralMasqueradeDummyType { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -167,7 +167,7 @@ LL | enum ProceduralMasqueradeDummyType { Future breakage diagnostic: error: using an old version of `rental` - --> remapped/proc-macro/pretty-print-hack/rental-0.5.5/src/lib.rs:4:6 + --> $DIR/pretty-print-hack/rental-0.5.5/src/lib.rs:4:6 | LL | enum ProceduralMasqueradeDummyType { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ diff --git a/tests/ui/proc-macro/pretty-print-hack-show.remapped.stdout b/tests/ui/proc-macro/pretty-print-hack-show.remapped.stdout index 61ca53b28d4..3d793d2a014 100644 --- a/tests/ui/proc-macro/pretty-print-hack-show.remapped.stdout +++ b/tests/ui/proc-macro/pretty-print-hack-show.remapped.stdout @@ -3,21 +3,21 @@ PRINT-DERIVE RE-COLLECTED (DISPLAY): enum ProceduralMasqueradeDummyType { Input PRINT-DERIVE INPUT (DEBUG): TokenStream [ Ident { ident: "enum", - span: remapped/proc-macro/pretty-print-hack/allsorts-rental-0.5.6/src/lib.rs:4:1: 4:5 (#0), + span: $DIR/pretty-print-hack/allsorts-rental-0.5.6/src/lib.rs:4:1: 4:5 (#0), }, Ident { ident: "ProceduralMasqueradeDummyType", - span: remapped/proc-macro/pretty-print-hack/allsorts-rental-0.5.6/src/lib.rs:4:6: 4:35 (#0), + span: $DIR/pretty-print-hack/allsorts-rental-0.5.6/src/lib.rs:4:6: 4:35 (#0), }, Group { delimiter: Brace, stream: TokenStream [ Ident { ident: "Input", - span: remapped/proc-macro/pretty-print-hack/allsorts-rental-0.5.6/src/lib.rs:13:5: 13:10 (#0), + span: $DIR/pretty-print-hack/allsorts-rental-0.5.6/src/lib.rs:13:5: 13:10 (#0), }, ], - span: remapped/proc-macro/pretty-print-hack/allsorts-rental-0.5.6/src/lib.rs:4:36: 14:2 (#0), + span: $DIR/pretty-print-hack/allsorts-rental-0.5.6/src/lib.rs:4:36: 14:2 (#0), }, ] PRINT-DERIVE INPUT (DISPLAY): enum ProceduralMasqueradeDummyType { Input, } @@ -25,20 +25,20 @@ PRINT-DERIVE RE-COLLECTED (DISPLAY): enum ProceduralMasqueradeDummyType { Input PRINT-DERIVE INPUT (DEBUG): TokenStream [ Ident { ident: "enum", - span: remapped/proc-macro/pretty-print-hack/rental-0.5.5/src/lib.rs:4:1: 4:5 (#0), + span: $DIR/pretty-print-hack/rental-0.5.5/src/lib.rs:4:1: 4:5 (#0), }, Ident { ident: "ProceduralMasqueradeDummyType", - span: remapped/proc-macro/pretty-print-hack/rental-0.5.5/src/lib.rs:4:6: 4:35 (#0), + span: $DIR/pretty-print-hack/rental-0.5.5/src/lib.rs:4:6: 4:35 (#0), }, Group { delimiter: Brace, stream: TokenStream [ Ident { ident: "Input", - span: remapped/proc-macro/pretty-print-hack/rental-0.5.5/src/lib.rs:13:5: 13:10 (#0), + span: $DIR/pretty-print-hack/rental-0.5.5/src/lib.rs:13:5: 13:10 (#0), }, ], - span: remapped/proc-macro/pretty-print-hack/rental-0.5.5/src/lib.rs:4:36: 14:2 (#0), + span: $DIR/pretty-print-hack/rental-0.5.5/src/lib.rs:4:36: 14:2 (#0), }, ] diff --git a/tests/ui/proc-macro/pretty-print-hack-show.rs b/tests/ui/proc-macro/pretty-print-hack-show.rs index e9ff66ba45a..24a389c450e 100644 --- a/tests/ui/proc-macro/pretty-print-hack-show.rs +++ b/tests/ui/proc-macro/pretty-print-hack-show.rs @@ -1,11 +1,8 @@ // aux-build:test-macros.rs // compile-flags: -Z span-debug // revisions: local remapped -// [remapped]compile-flags: --remap-path-prefix={{src-base}}=remapped - -// The remapped paths are not normalized by compiletest. -// normalize-stdout-test: "\\(proc-macro|pretty-print-hack)" -> "/$1" -// normalize-stderr-test: "\\(proc-macro|pretty-print-hack)" -> "/$1" +// [local] no-remap-src-base: The hack should work regardless of remapping. +// [remapped] remap-src-base #![no_std] // Don't load unnecessary hygiene information from std extern crate std; diff --git a/tests/ui/proc-macro/proc-macro-abi.rs b/tests/ui/proc-macro/proc-macro-abi.rs new file mode 100644 index 00000000000..873660a5b3a --- /dev/null +++ b/tests/ui/proc-macro/proc-macro-abi.rs @@ -0,0 +1,31 @@ +// force-host +// no-prefer-dynamic + +#![crate_type = "proc-macro"] +#![allow(warnings)] + +extern crate proc_macro; +use proc_macro::TokenStream; + +#[proc_macro] +pub extern "C" fn abi(a: TokenStream) -> TokenStream { + //~^ ERROR proc macro functions may not be `extern "C"` + a +} + +#[proc_macro] +pub extern "system" fn abi2(a: TokenStream) -> TokenStream { + //~^ ERROR proc macro functions may not be `extern "system"` + a +} + +#[proc_macro] +pub extern fn abi3(a: TokenStream) -> TokenStream { + //~^ ERROR proc macro functions may not be `extern "C"` + a +} + +#[proc_macro] +pub extern "Rust" fn abi4(a: TokenStream) -> TokenStream { + a +} diff --git a/tests/ui/proc-macro/proc-macro-abi.stderr b/tests/ui/proc-macro/proc-macro-abi.stderr new file mode 100644 index 00000000000..9a781be0996 --- /dev/null +++ b/tests/ui/proc-macro/proc-macro-abi.stderr @@ -0,0 +1,20 @@ +error: proc macro functions may not be `extern "C"` + --> $DIR/proc-macro-abi.rs:11:1 + | +LL | pub extern "C" fn abi(a: TokenStream) -> TokenStream { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +error: proc macro functions may not be `extern "system"` + --> $DIR/proc-macro-abi.rs:17:1 + | +LL | pub extern "system" fn abi2(a: TokenStream) -> TokenStream { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +error: proc macro functions may not be `extern "C"` + --> $DIR/proc-macro-abi.rs:23:1 + | +LL | pub extern fn abi3(a: TokenStream) -> TokenStream { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +error: aborting due to 3 previous errors + diff --git a/tests/ui/proc-macro/signature-proc-macro-attribute.rs b/tests/ui/proc-macro/signature-proc-macro-attribute.rs new file mode 100644 index 00000000000..51abc8e7d3e --- /dev/null +++ b/tests/ui/proc-macro/signature-proc-macro-attribute.rs @@ -0,0 +1,32 @@ +// force-host +// no-prefer-dynamic + +#![crate_type = "proc-macro"] + +extern crate proc_macro; +use proc_macro::TokenStream; + +#[proc_macro_attribute] +pub fn bad_input(input: String) -> TokenStream { + //~^ ERROR mismatched attribute proc macro signature + ::proc_macro::TokenStream::new() +} + +#[proc_macro_attribute] +pub fn bad_output(input: TokenStream) -> String { + //~^ ERROR mismatched attribute proc macro signature + //~| ERROR mismatched attribute proc macro signature + String::from("blah") +} + +#[proc_macro_attribute] +pub fn bad_everything(input: String) -> String { + //~^ ERROR mismatched attribute proc macro signature + //~| ERROR mismatched attribute proc macro signature + input +} + +#[proc_macro_attribute] +pub fn too_many(a: TokenStream, b: TokenStream, c: String) -> TokenStream { + //~^ ERROR mismatched attribute proc macro signature +} diff --git a/tests/ui/proc-macro/signature-proc-macro-attribute.stderr b/tests/ui/proc-macro/signature-proc-macro-attribute.stderr new file mode 100644 index 00000000000..abf7a6f3ce9 --- /dev/null +++ b/tests/ui/proc-macro/signature-proc-macro-attribute.stderr @@ -0,0 +1,42 @@ +error: mismatched attribute proc macro signature + --> $DIR/signature-proc-macro-attribute.rs:10:1 + | +LL | pub fn bad_input(input: String) -> TokenStream { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ attribute proc macro must have two arguments of type `proc_macro::TokenStream` + +error: mismatched attribute proc macro signature + --> $DIR/signature-proc-macro-attribute.rs:16:42 + | +LL | pub fn bad_output(input: TokenStream) -> String { + | ^^^^^^ found std::string::String, expected type `proc_macro::TokenStream` + | + = note: attribute proc macros must have a signature of `fn(TokenStream, TokenStream) -> TokenStream` + +error: mismatched attribute proc macro signature + --> $DIR/signature-proc-macro-attribute.rs:16:1 + | +LL | pub fn bad_output(input: TokenStream) -> String { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ attribute proc macro must have two arguments of type `proc_macro::TokenStream` + +error: mismatched attribute proc macro signature + --> $DIR/signature-proc-macro-attribute.rs:23:41 + | +LL | pub fn bad_everything(input: String) -> String { + | ^^^^^^ found std::string::String, expected type `proc_macro::TokenStream` + | + = note: attribute proc macros must have a signature of `fn(TokenStream, TokenStream) -> TokenStream` + +error: mismatched attribute proc macro signature + --> $DIR/signature-proc-macro-attribute.rs:23:1 + | +LL | pub fn bad_everything(input: String) -> String { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ attribute proc macro must have two arguments of type `proc_macro::TokenStream` + +error: mismatched attribute proc macro signature + --> $DIR/signature-proc-macro-attribute.rs:30:49 + | +LL | pub fn too_many(a: TokenStream, b: TokenStream, c: String) -> TokenStream { + | ^^^^^^^^^ found unexpected argument + +error: aborting due to 6 previous errors + diff --git a/tests/ui/proc-macro/signature-proc-macro-derive.rs b/tests/ui/proc-macro/signature-proc-macro-derive.rs new file mode 100644 index 00000000000..f2fd824b675 --- /dev/null +++ b/tests/ui/proc-macro/signature-proc-macro-derive.rs @@ -0,0 +1,31 @@ +// force-host +// no-prefer-dynamic + +#![crate_type = "proc-macro"] + +extern crate proc_macro; +use proc_macro::TokenStream; + +#[proc_macro_derive(Blah)] +pub fn bad_input(input: String) -> TokenStream { + //~^ ERROR mismatched derive proc macro signature + TokenStream::new() +} + +#[proc_macro_derive(Bleh)] +pub fn bad_output(input: TokenStream) -> String { + //~^ ERROR mismatched derive proc macro signature + String::from("blah") +} + +#[proc_macro_derive(Bluh)] +pub fn bad_everything(input: String) -> String { + //~^ ERROR mismatched derive proc macro signature + //~| ERROR mismatched derive proc macro signature + input +} + +#[proc_macro_derive(Blih)] +pub fn too_many(a: TokenStream, b: TokenStream, c: String) -> TokenStream { + //~^ ERROR mismatched derive proc macro signature +} diff --git a/tests/ui/proc-macro/signature-proc-macro-derive.stderr b/tests/ui/proc-macro/signature-proc-macro-derive.stderr new file mode 100644 index 00000000000..a358ae27703 --- /dev/null +++ b/tests/ui/proc-macro/signature-proc-macro-derive.stderr @@ -0,0 +1,40 @@ +error: mismatched derive proc macro signature + --> $DIR/signature-proc-macro-derive.rs:10:25 + | +LL | pub fn bad_input(input: String) -> TokenStream { + | ^^^^^^ found std::string::String, expected type `proc_macro::TokenStream` + | + = note: derive proc macros must have a signature of `fn(TokenStream) -> TokenStream` + +error: mismatched derive proc macro signature + --> $DIR/signature-proc-macro-derive.rs:16:42 + | +LL | pub fn bad_output(input: TokenStream) -> String { + | ^^^^^^ found std::string::String, expected type `proc_macro::TokenStream` + | + = note: derive proc macros must have a signature of `fn(TokenStream) -> TokenStream` + +error: mismatched derive proc macro signature + --> $DIR/signature-proc-macro-derive.rs:22:41 + | +LL | pub fn bad_everything(input: String) -> String { + | ^^^^^^ found std::string::String, expected type `proc_macro::TokenStream` + | + = note: derive proc macros must have a signature of `fn(TokenStream) -> TokenStream` + +error: mismatched derive proc macro signature + --> $DIR/signature-proc-macro-derive.rs:22:30 + | +LL | pub fn bad_everything(input: String) -> String { + | ^^^^^^ found std::string::String, expected type `proc_macro::TokenStream` + | + = note: derive proc macros must have a signature of `fn(TokenStream) -> TokenStream` + +error: mismatched derive proc macro signature + --> $DIR/signature-proc-macro-derive.rs:29:33 + | +LL | pub fn too_many(a: TokenStream, b: TokenStream, c: String) -> TokenStream { + | ^^^^^^^^^^^^^^^^^^^^^^^^^ found unexpected arguments + +error: aborting due to 5 previous errors + diff --git a/tests/ui/proc-macro/signature-proc-macro.rs b/tests/ui/proc-macro/signature-proc-macro.rs new file mode 100644 index 00000000000..54770aacd1a --- /dev/null +++ b/tests/ui/proc-macro/signature-proc-macro.rs @@ -0,0 +1,31 @@ +// force-host +// no-prefer-dynamic + +#![crate_type = "proc-macro"] + +extern crate proc_macro; +use proc_macro::TokenStream; + +#[proc_macro] +pub fn bad_input(input: String) -> TokenStream { + //~^ ERROR mismatched function-like proc macro signature + ::proc_macro::TokenStream::new() +} + +#[proc_macro] +pub fn bad_output(input: TokenStream) -> String { + //~^ ERROR mismatched function-like proc macro signature + String::from("blah") +} + +#[proc_macro] +pub fn bad_everything(input: String) -> String { + //~^ ERROR mismatched function-like proc macro signature + //~| ERROR mismatched function-like proc macro signature + input +} + +#[proc_macro] +pub fn too_many(a: TokenStream, b: TokenStream, c: String) -> TokenStream { + //~^ ERROR mismatched function-like proc macro signature +} diff --git a/tests/ui/proc-macro/signature-proc-macro.stderr b/tests/ui/proc-macro/signature-proc-macro.stderr new file mode 100644 index 00000000000..4b14a54e675 --- /dev/null +++ b/tests/ui/proc-macro/signature-proc-macro.stderr @@ -0,0 +1,40 @@ +error: mismatched function-like proc macro signature + --> $DIR/signature-proc-macro.rs:10:25 + | +LL | pub fn bad_input(input: String) -> TokenStream { + | ^^^^^^ found std::string::String, expected type `proc_macro::TokenStream` + | + = note: function-like proc macros must have a signature of `fn(TokenStream) -> TokenStream` + +error: mismatched function-like proc macro signature + --> $DIR/signature-proc-macro.rs:16:42 + | +LL | pub fn bad_output(input: TokenStream) -> String { + | ^^^^^^ found std::string::String, expected type `proc_macro::TokenStream` + | + = note: function-like proc macros must have a signature of `fn(TokenStream) -> TokenStream` + +error: mismatched function-like proc macro signature + --> $DIR/signature-proc-macro.rs:22:41 + | +LL | pub fn bad_everything(input: String) -> String { + | ^^^^^^ found std::string::String, expected type `proc_macro::TokenStream` + | + = note: function-like proc macros must have a signature of `fn(TokenStream) -> TokenStream` + +error: mismatched function-like proc macro signature + --> $DIR/signature-proc-macro.rs:22:30 + | +LL | pub fn bad_everything(input: String) -> String { + | ^^^^^^ found std::string::String, expected type `proc_macro::TokenStream` + | + = note: function-like proc macros must have a signature of `fn(TokenStream) -> TokenStream` + +error: mismatched function-like proc macro signature + --> $DIR/signature-proc-macro.rs:29:33 + | +LL | pub fn too_many(a: TokenStream, b: TokenStream, c: String) -> TokenStream { + | ^^^^^^^^^^^^^^^^^^^^^^^^^ found unexpected arguments + +error: aborting due to 5 previous errors + diff --git a/tests/ui/proc-macro/signature.rs b/tests/ui/proc-macro/signature.rs index 2302238253e..11187aa31bd 100644 --- a/tests/ui/proc-macro/signature.rs +++ b/tests/ui/proc-macro/signature.rs @@ -8,6 +8,10 @@ extern crate proc_macro; #[proc_macro_derive(A)] pub unsafe extern "C" fn foo(a: i32, b: u32) -> u32 { - //~^ ERROR: expected a `Fn<(proc_macro::TokenStream,)>` closure, found `unsafe extern "C" fn + //~^ ERROR: mismatched derive proc macro signature + //~| mismatched derive proc macro signature + //~| mismatched derive proc macro signature + //~| proc macro functions may not be `extern + //~| proc macro functions may not be `unsafe loop {} } diff --git a/tests/ui/proc-macro/signature.stderr b/tests/ui/proc-macro/signature.stderr index 79f2001da00..3dbe3f22a0d 100644 --- a/tests/ui/proc-macro/signature.stderr +++ b/tests/ui/proc-macro/signature.stderr @@ -1,20 +1,36 @@ -error[E0277]: expected a `Fn<(proc_macro::TokenStream,)>` closure, found `unsafe extern "C" fn(i32, u32) -> u32 {foo}` +error: proc macro functions may not be `extern "C"` --> $DIR/signature.rs:10:1 | -LL | / pub unsafe extern "C" fn foo(a: i32, b: u32) -> u32 { -LL | | -LL | | loop {} -LL | | } - | | ^ - | | | - | |_call the function in a closure: `|| unsafe { /* code */ }` - | required by a bound introduced by this call +LL | pub unsafe extern "C" fn foo(a: i32, b: u32) -> u32 { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +error: proc macro functions may not be `unsafe` + --> $DIR/signature.rs:10:1 + | +LL | pub unsafe extern "C" fn foo(a: i32, b: u32) -> u32 { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +error: mismatched derive proc macro signature + --> $DIR/signature.rs:10:49 + | +LL | pub unsafe extern "C" fn foo(a: i32, b: u32) -> u32 { + | ^^^ found u32, expected type `proc_macro::TokenStream` + | + = note: derive proc macros must have a signature of `fn(TokenStream) -> TokenStream` + +error: mismatched derive proc macro signature + --> $DIR/signature.rs:10:33 + | +LL | pub unsafe extern "C" fn foo(a: i32, b: u32) -> u32 { + | ^^^ found i32, expected type `proc_macro::TokenStream` + | + = note: derive proc macros must have a signature of `fn(TokenStream) -> TokenStream` + +error: mismatched derive proc macro signature + --> $DIR/signature.rs:10:38 | - = help: the trait `Fn<(proc_macro::TokenStream,)>` is not implemented for fn item `unsafe extern "C" fn(i32, u32) -> u32 {foo}` - = note: unsafe function cannot be called generically without an unsafe block -note: required by a bound in `ProcMacro::custom_derive` - --> $SRC_DIR/proc_macro/src/bridge/client.rs:LL:COL +LL | pub unsafe extern "C" fn foo(a: i32, b: u32) -> u32 { + | ^^^^^^ found unexpected argument -error: aborting due to previous error +error: aborting due to 5 previous errors -For more information about this error, try `rustc --explain E0277`. diff --git a/tests/ui/regions/do-not-suggest-adding-bound-to-opaque-type.stderr b/tests/ui/regions/do-not-suggest-adding-bound-to-opaque-type.stderr index 6ea238f302f..d76a83b0258 100644 --- a/tests/ui/regions/do-not-suggest-adding-bound-to-opaque-type.stderr +++ b/tests/ui/regions/do-not-suggest-adding-bound-to-opaque-type.stderr @@ -1,6 +1,8 @@ error[E0597]: `x` does not live long enough --> $DIR/do-not-suggest-adding-bound-to-opaque-type.rs:9:7 | +LL | let x = (); + | - binding `x` declared here LL | S(&x) | --^^- | | | diff --git a/tests/ui/regions/higher-ranked-implied.rs b/tests/ui/regions/higher-ranked-implied.rs new file mode 100644 index 00000000000..103884c5031 --- /dev/null +++ b/tests/ui/regions/higher-ranked-implied.rs @@ -0,0 +1,14 @@ +// FIXME: This test should pass as the first two fields add implied bounds that +// `'a` is equal to `'b` while the last one should simply use that fact. With +// the current implementation this errors. We have to be careful as implied bounds +// are only sound if they're also correctly checked. + +struct Inv<T>(*mut T); // `T` is invariant. +type A = for<'a, 'b> fn(Inv<&'a &'b ()>, Inv<&'b &'a ()>, Inv<&'a ()>); +type B = for<'a, 'b> fn(Inv<&'a &'b ()>, Inv<&'b &'a ()>, Inv<&'b ()>); + +fn main() { + let x: A = |_, _, _| (); + let y: B = x; //~ ERROR mismatched types + let _: A = y; //~ ERROR mismatched types +} diff --git a/tests/ui/regions/higher-ranked-implied.stderr b/tests/ui/regions/higher-ranked-implied.stderr new file mode 100644 index 00000000000..9d80eacd7c3 --- /dev/null +++ b/tests/ui/regions/higher-ranked-implied.stderr @@ -0,0 +1,21 @@ +error[E0308]: mismatched types + --> $DIR/higher-ranked-implied.rs:12:16 + | +LL | let y: B = x; + | ^ one type is more general than the other + | + = note: expected fn pointer `for<'a, 'b> fn(Inv<&'a &'b ()>, Inv<&'b &'a ()>, Inv<&'b ()>)` + found fn pointer `for<'a, 'b> fn(Inv<&'a &'b ()>, Inv<&'b &'a ()>, Inv<&'a ()>)` + +error[E0308]: mismatched types + --> $DIR/higher-ranked-implied.rs:13:16 + | +LL | let _: A = y; + | ^ one type is more general than the other + | + = note: expected fn pointer `for<'a, 'b> fn(Inv<&'a &'b ()>, Inv<&'b &'a ()>, Inv<&'a ()>)` + found fn pointer `for<'a, 'b> fn(Inv<&'a &'b ()>, Inv<&'b &'a ()>, Inv<&'b ()>)` + +error: aborting due to 2 previous errors + +For more information about this error, try `rustc --explain E0308`. diff --git a/tests/ui/regions/regions-addr-of-arg.stderr b/tests/ui/regions/regions-addr-of-arg.stderr index e77289287e5..99060a9c7f5 100644 --- a/tests/ui/regions/regions-addr-of-arg.stderr +++ b/tests/ui/regions/regions-addr-of-arg.stderr @@ -1,6 +1,8 @@ error[E0597]: `a` does not live long enough --> $DIR/regions-addr-of-arg.rs:5:30 | +LL | fn foo(a: isize) { + | - binding `a` declared here LL | let _p: &'static isize = &a; | -------------- ^^ borrowed value does not live long enough | | diff --git a/tests/ui/regions/regions-free-region-ordering-caller1.stderr b/tests/ui/regions/regions-free-region-ordering-caller1.stderr index 8ef7e22536b..c83cfc1c987 100644 --- a/tests/ui/regions/regions-free-region-ordering-caller1.stderr +++ b/tests/ui/regions/regions-free-region-ordering-caller1.stderr @@ -18,6 +18,8 @@ error[E0597]: `y` does not live long enough LL | fn call1<'a>(x: &'a usize) { | -- lifetime `'a` defined here ... +LL | let y: usize = 3; + | - binding `y` declared here LL | let z: &'a & usize = &(&y); | ----------- ^^^^ borrowed value does not live long enough | | diff --git a/tests/ui/regions/regions-infer-proc-static-upvar.stderr b/tests/ui/regions/regions-infer-proc-static-upvar.stderr index 803d0d74491..c8a33bbc522 100644 --- a/tests/ui/regions/regions-infer-proc-static-upvar.stderr +++ b/tests/ui/regions/regions-infer-proc-static-upvar.stderr @@ -1,6 +1,8 @@ error[E0597]: `x` does not live long enough --> $DIR/regions-infer-proc-static-upvar.rs:10:13 | +LL | let x = 3; + | - binding `x` declared here LL | let y = &x; | ^^ borrowed value does not live long enough LL | / foo(move|| { diff --git a/tests/ui/regions/regions-nested-fns.stderr b/tests/ui/regions/regions-nested-fns.stderr index bb2740310f6..ee43f9fa572 100644 --- a/tests/ui/regions/regions-nested-fns.stderr +++ b/tests/ui/regions/regions-nested-fns.stderr @@ -13,6 +13,8 @@ LL | ay = z; error[E0597]: `y` does not live long enough --> $DIR/regions-nested-fns.rs:5:18 | +LL | let y = 3; + | - binding `y` declared here LL | let mut ay = &y; | ^^ borrowed value does not live long enough ... diff --git a/tests/ui/regions/regions-pattern-typing-issue-19552.stderr b/tests/ui/regions/regions-pattern-typing-issue-19552.stderr index f77d94a24b8..18aec29ad0b 100644 --- a/tests/ui/regions/regions-pattern-typing-issue-19552.stderr +++ b/tests/ui/regions/regions-pattern-typing-issue-19552.stderr @@ -1,6 +1,8 @@ error[E0597]: `line` does not live long enough --> $DIR/regions-pattern-typing-issue-19552.rs:5:14 | +LL | let line = String::new(); + | ---- binding `line` declared here LL | match [&*line] { | ^^^^ borrowed value does not live long enough LL | [ word ] => { assert_static(word); } diff --git a/tests/ui/regions/regions-pattern-typing-issue-19997.stderr b/tests/ui/regions/regions-pattern-typing-issue-19997.stderr index ae60e3c0d5d..0abe77a8697 100644 --- a/tests/ui/regions/regions-pattern-typing-issue-19997.stderr +++ b/tests/ui/regions/regions-pattern-typing-issue-19997.stderr @@ -2,10 +2,10 @@ error[E0506]: cannot assign to `a1` because it is borrowed --> $DIR/regions-pattern-typing-issue-19997.rs:7:13 | LL | match (&a1,) { - | --- borrow of `a1` occurs here + | --- `a1` is borrowed here LL | (&ref b0,) => { LL | a1 = &f; - | ^^^^^^^ assignment to borrowed `a1` occurs here + | ^^^^^^^ `a1` is assigned to here but it was already borrowed LL | drop(b0); | -- borrow later used here diff --git a/tests/ui/reify-intrinsic.stderr b/tests/ui/reify-intrinsic.stderr index f78f1d822bf..310b6c224e0 100644 --- a/tests/ui/reify-intrinsic.stderr +++ b/tests/ui/reify-intrinsic.stderr @@ -23,9 +23,7 @@ LL | std::intrinsics::unlikely, | = note: expected fn item `extern "rust-intrinsic" fn(_) -> _ {likely}` found fn item `extern "rust-intrinsic" fn(_) -> _ {unlikely}` - = note: different `fn` items always have unique types, even if their signatures are the same - = help: change the expected type to be function pointer `extern "rust-intrinsic" fn(bool) -> bool` - = help: if the expected type is due to type inference, cast the expected `fn` to a function pointer: `likely as extern "rust-intrinsic" fn(bool) -> bool` + = note: different fn items have unique types, even if their signatures are the same error: aborting due to 3 previous errors diff --git a/tests/ui/rfc-2008-non-exhaustive/borrowck-non-exhaustive.stderr b/tests/ui/rfc-2008-non-exhaustive/borrowck-non-exhaustive.stderr index de730ce1030..ad84ebe3a50 100644 --- a/tests/ui/rfc-2008-non-exhaustive/borrowck-non-exhaustive.stderr +++ b/tests/ui/rfc-2008-non-exhaustive/borrowck-non-exhaustive.stderr @@ -2,7 +2,7 @@ error[E0503]: cannot use `x` because it was mutably borrowed --> $DIR/borrowck-non-exhaustive.rs:12:11 | LL | let y = &mut x; - | ------ borrow of `x` occurs here + | ------ `x` is borrowed here LL | match x { | ^ use of borrowed `x` ... diff --git a/tests/ui/rfc-2497-if-let-chains/ensure-that-let-else-does-not-interact-with-let-chains.stderr b/tests/ui/rfc-2497-if-let-chains/ensure-that-let-else-does-not-interact-with-let-chains.stderr index 498a112fa9b..f34ccecdd45 100644 --- a/tests/ui/rfc-2497-if-let-chains/ensure-that-let-else-does-not-interact-with-let-chains.stderr +++ b/tests/ui/rfc-2497-if-let-chains/ensure-that-let-else-does-not-interact-with-let-chains.stderr @@ -37,6 +37,11 @@ help: add a block here | LL | if let Some(n) = opt else { | ^ +help: remove the `if` if you meant to write a `let...else` statement + --> $DIR/ensure-that-let-else-does-not-interact-with-let-chains.rs:24:5 + | +LL | if let Some(n) = opt else { + | ^^ error: this `if` expression is missing a block after the condition --> $DIR/ensure-that-let-else-does-not-interact-with-let-chains.rs:28:5 diff --git a/tests/ui/rfcs/rfc-2396-target_feature-11/fn-ptr.mir.stderr b/tests/ui/rfcs/rfc-2396-target_feature-11/fn-ptr.mir.stderr index cf5815df56e..07f6dc906c6 100644 --- a/tests/ui/rfcs/rfc-2396-target_feature-11/fn-ptr.mir.stderr +++ b/tests/ui/rfcs/rfc-2396-target_feature-11/fn-ptr.mir.stderr @@ -5,12 +5,15 @@ LL | #[target_feature(enable = "sse2")] | ---------------------------------- `#[target_feature]` added here ... LL | let foo: fn() = foo; - | ---- ^^^ cannot coerce functions with `#[target_feature]` to safe function pointers - | | + | ---- ^^^ + | | | + | | cannot coerce functions with `#[target_feature]` to safe function pointers + | | help: consider casting to a fn pointer: `foo as fn()` | expected due to this | = note: expected fn pointer `fn()` found fn item `fn() {foo}` + = note: fn items are distinct from fn pointers = note: functions with `#[target_feature]` can only be coerced to `unsafe` function pointers error: aborting due to previous error diff --git a/tests/ui/rfcs/rfc-2396-target_feature-11/fn-ptr.thir.stderr b/tests/ui/rfcs/rfc-2396-target_feature-11/fn-ptr.thir.stderr index cf5815df56e..07f6dc906c6 100644 --- a/tests/ui/rfcs/rfc-2396-target_feature-11/fn-ptr.thir.stderr +++ b/tests/ui/rfcs/rfc-2396-target_feature-11/fn-ptr.thir.stderr @@ -5,12 +5,15 @@ LL | #[target_feature(enable = "sse2")] | ---------------------------------- `#[target_feature]` added here ... LL | let foo: fn() = foo; - | ---- ^^^ cannot coerce functions with `#[target_feature]` to safe function pointers - | | + | ---- ^^^ + | | | + | | cannot coerce functions with `#[target_feature]` to safe function pointers + | | help: consider casting to a fn pointer: `foo as fn()` | expected due to this | = note: expected fn pointer `fn()` found fn item `fn() {foo}` + = note: fn items are distinct from fn pointers = note: functions with `#[target_feature]` can only be coerced to `unsafe` function pointers error: aborting due to previous error diff --git a/tests/ui/rfcs/rfc-2528-type-changing-struct-update/lifetime-update.stderr b/tests/ui/rfcs/rfc-2528-type-changing-struct-update/lifetime-update.stderr index 5f93ad6e027..1c26eb8803d 100644 --- a/tests/ui/rfcs/rfc-2528-type-changing-struct-update/lifetime-update.stderr +++ b/tests/ui/rfcs/rfc-2528-type-changing-struct-update/lifetime-update.stderr @@ -1,6 +1,9 @@ error[E0597]: `s` does not live long enough --> $DIR/lifetime-update.rs:20:17 | +LL | let s = String::from("hello"); + | - binding `s` declared here +... LL | lt_str: &s, | ^^ borrowed value does not live long enough ... diff --git a/tests/ui/self/issue-61882-2.stderr b/tests/ui/self/issue-61882-2.stderr index 0b8e134c966..6faa4477d8c 100644 --- a/tests/ui/self/issue-61882-2.stderr +++ b/tests/ui/self/issue-61882-2.stderr @@ -1,6 +1,8 @@ error[E0597]: `x` does not live long enough --> $DIR/issue-61882-2.rs:6:14 | +LL | let x = 0; + | - binding `x` declared here LL | Self(&x); | ^^ | | diff --git a/tests/ui/single-use-lifetime/issue-104440.rs b/tests/ui/single-use-lifetime/issue-104440.rs new file mode 100644 index 00000000000..0795e95303a --- /dev/null +++ b/tests/ui/single-use-lifetime/issue-104440.rs @@ -0,0 +1,100 @@ +#![feature(decl_macro, rustc_attrs)] +#![deny(single_use_lifetimes)] + +mod type_params { + macro m($T:ident) { + fn f<$T: Clone, T: PartialEq>(t1: $T, t2: T) -> ($T, bool) { + (t1.clone(), t2 == t2) + } + } + + #[rustc_macro_transparency = "semitransparent"] + macro n($T:ident) { + fn g<$T: Clone>(t1: $T, t2: T) -> (T, $T) { + (t1.clone(), t2.clone()) + } + fn h<T: Clone>(t1: $T, t2: T) -> (T, $T) { + (t1.clone(), t2.clone()) + } + } + + #[rustc_macro_transparency = "transparent"] + macro p($T:ident) { + fn j<$T: Clone>(t1: $T, t2: T) -> (T, $T) { + (t1.clone(), t2.clone()) + } + fn k<T: Clone>(t1: $T, t2: T) -> (T, $T) { + (t1.clone(), t2.clone()) + } + } + + m!(T); + n!(T); + p!(T); +} + +mod lifetime_params { + macro m($a:lifetime) { + fn f<'b, 'c, $a: 'b, 'a: 'c>(t1: &$a(), t2: &'a ()) -> (&'b (), &'c ()) { //~ ERROR lifetime parameter `'a` only used once + (t1, t2) + } + } + + #[rustc_macro_transparency = "semitransparent"] + macro n($a:lifetime) { + fn g<$a>(t1: &$a(), t2: &'a ()) -> (&'a (), &$a ()) { + (t1, t2) + } + fn h<'a>(t1: &$a(), t2: &'a ()) -> (&'a (), &$a ()) { + (t1, t2) + } + } + + #[rustc_macro_transparency = "transparent"] + macro p($a:lifetime) { + fn j<$a>(t1: &$a(), t2: &'a ()) -> (&'a (), &$a ()) { + (t1, t2) + } + fn k<'a>(t1: &$a(), t2: &'a ()) -> (&'a (), &$a ()) { + (t1, t2) + } + } + + m!('a); //~ ERROR lifetime parameter `'a` only used once + n!('a); + p!('a); +} + +mod const_params { + macro m($C:ident) { + fn f<const $C: usize, const C: usize>(t1: [(); $C], t2: [(); C]) -> ([(); $C], [(); C]) { + (t1, t2) + } + } + + #[rustc_macro_transparency = "semitransparent"] + macro n($C:ident) { + fn g<const $C: usize>(t1: [(); $C], t2: [(); C]) -> ([(); C], [(); $C]) { + (t1, t2) + } + fn h<const C: usize>(t1: [(); $C], t2: [(); C]) -> ([(); C], [(); $C]) { + (t1, t2) + } + } + + #[rustc_macro_transparency = "transparent"] + macro p($C:ident) { + fn j<const $C: usize>(t1: [(); $C], t2: [(); C]) -> ([(); C], [(); $C]) { + (t1, t2) + } + fn k<const C: usize>(t1: [(); $C], t2: [(); C]) -> ([(); C], [(); $C]) { + (t1, t2) + } + } + + m!(C); + n!(C); + p!(C); +} + +fn main() {} diff --git a/tests/ui/single-use-lifetime/issue-104440.stderr b/tests/ui/single-use-lifetime/issue-104440.stderr new file mode 100644 index 00000000000..54ded31dcbe --- /dev/null +++ b/tests/ui/single-use-lifetime/issue-104440.stderr @@ -0,0 +1,28 @@ +error: lifetime parameter `'a` only used once + --> $DIR/issue-104440.rs:63:8 + | +LL | m!('a); + | ^^ + | | + | this lifetime... + | ...is used only here + | +note: the lint level is defined here + --> $DIR/issue-104440.rs:2:9 + | +LL | #![deny(single_use_lifetimes)] + | ^^^^^^^^^^^^^^^^^^^^ + +error: lifetime parameter `'a` only used once + --> $DIR/issue-104440.rs:38:30 + | +LL | fn f<'b, 'c, $a: 'b, 'a: 'c>(t1: &$a(), t2: &'a ()) -> (&'b (), &'c ()) { + | ^^ this lifetime... -- ...is used only here +... +LL | m!('a); + | ------ in this macro invocation + | + = note: this error originates in the macro `m` (in Nightly builds, run with -Z macro-backtrace for more info) + +error: aborting due to 2 previous errors + diff --git a/tests/ui/span/borrowck-call-is-borrow-issue-12224.stderr b/tests/ui/span/borrowck-call-is-borrow-issue-12224.stderr index 48b42bc7825..9711dad8078 100644 --- a/tests/ui/span/borrowck-call-is-borrow-issue-12224.stderr +++ b/tests/ui/span/borrowck-call-is-borrow-issue-12224.stderr @@ -47,6 +47,9 @@ LL | foo(f); error[E0505]: cannot move out of `f` because it is borrowed --> $DIR/borrowck-call-is-borrow-issue-12224.rs:55:16 | +LL | let mut f = move |g: Box<dyn FnMut(isize)>, b: isize| { + | ----- binding `f` declared here +... LL | f(Box::new(|a| { | - ^^^ move out of `f` occurs here | | diff --git a/tests/ui/span/borrowck-let-suggestion-suffixes.rs b/tests/ui/span/borrowck-let-suggestion-suffixes.rs index 18abfb5c3fb..ad556f281df 100644 --- a/tests/ui/span/borrowck-let-suggestion-suffixes.rs +++ b/tests/ui/span/borrowck-let-suggestion-suffixes.rs @@ -8,6 +8,7 @@ fn f() { { let young = ['y']; // statement 3 + //~^ NOTE binding `young` declared here v2.push(&young[0]); // statement 4 //~^ ERROR `young[_]` does not live long enough diff --git a/tests/ui/span/borrowck-let-suggestion-suffixes.stderr b/tests/ui/span/borrowck-let-suggestion-suffixes.stderr index 2dc29a78d20..545b235a552 100644 --- a/tests/ui/span/borrowck-let-suggestion-suffixes.stderr +++ b/tests/ui/span/borrowck-let-suggestion-suffixes.stderr @@ -1,6 +1,9 @@ error[E0597]: `young[_]` does not live long enough - --> $DIR/borrowck-let-suggestion-suffixes.rs:12:17 + --> $DIR/borrowck-let-suggestion-suffixes.rs:13:17 | +LL | let young = ['y']; // statement 3 + | ----- binding `young` declared here +... LL | v2.push(&young[0]); // statement 4 | ^^^^^^^^^ borrowed value does not live long enough ... @@ -11,7 +14,7 @@ LL | (v1, v2, v3, /* v4 is above. */ v5).use_ref(); | -- borrow later used here error[E0716]: temporary value dropped while borrowed - --> $DIR/borrowck-let-suggestion-suffixes.rs:19:14 + --> $DIR/borrowck-let-suggestion-suffixes.rs:20:14 | LL | v3.push(&id('x')); // statement 6 | ^^^^^^^ - temporary value is freed at the end of this statement @@ -28,7 +31,7 @@ LL ~ v3.push(&binding); // statement 6 | error[E0716]: temporary value dropped while borrowed - --> $DIR/borrowck-let-suggestion-suffixes.rs:29:18 + --> $DIR/borrowck-let-suggestion-suffixes.rs:30:18 | LL | v4.push(&id('y')); | ^^^^^^^ - temporary value is freed at the end of this statement @@ -41,7 +44,7 @@ LL | v4.use_ref(); = note: consider using a `let` binding to create a longer lived value error[E0716]: temporary value dropped while borrowed - --> $DIR/borrowck-let-suggestion-suffixes.rs:40:14 + --> $DIR/borrowck-let-suggestion-suffixes.rs:41:14 | LL | v5.push(&id('z')); | ^^^^^^^ - temporary value is freed at the end of this statement diff --git a/tests/ui/span/destructor-restrictions.stderr b/tests/ui/span/destructor-restrictions.stderr index 53c9404620f..281248626c8 100644 --- a/tests/ui/span/destructor-restrictions.stderr +++ b/tests/ui/span/destructor-restrictions.stderr @@ -1,6 +1,8 @@ error[E0597]: `*a` does not live long enough --> $DIR/destructor-restrictions.rs:8:10 | +LL | let a = Box::new(RefCell::new(4)); + | - binding `a` declared here LL | *a.borrow() + 1 | ^^^^^^^^^^ | | diff --git a/tests/ui/span/dropck-object-cycle.stderr b/tests/ui/span/dropck-object-cycle.stderr index 229d17e1cf9..097fb6219f1 100644 --- a/tests/ui/span/dropck-object-cycle.stderr +++ b/tests/ui/span/dropck-object-cycle.stderr @@ -1,6 +1,8 @@ error[E0597]: `*m` does not live long enough --> $DIR/dropck-object-cycle.rs:27:31 | +LL | let m : Box<dyn Trait+'static> = make_val(); + | - binding `m` declared here LL | assert_eq!(object_invoke1(&*m), (4,5)); | ^^^ borrowed value does not live long enough ... diff --git a/tests/ui/span/dropck_arr_cycle_checked.stderr b/tests/ui/span/dropck_arr_cycle_checked.stderr index 068c779ae52..23ebc8d598c 100644 --- a/tests/ui/span/dropck_arr_cycle_checked.stderr +++ b/tests/ui/span/dropck_arr_cycle_checked.stderr @@ -1,6 +1,9 @@ error[E0597]: `b2` does not live long enough --> $DIR/dropck_arr_cycle_checked.rs:93:24 | +LL | let (b1, b2, b3); + | -- binding `b2` declared here +... LL | b1.a[0].v.set(Some(&b2)); | ^^^ borrowed value does not live long enough ... @@ -15,6 +18,9 @@ LL | } error[E0597]: `b3` does not live long enough --> $DIR/dropck_arr_cycle_checked.rs:95:24 | +LL | let (b1, b2, b3); + | -- binding `b3` declared here +... LL | b1.a[1].v.set(Some(&b3)); | ^^^ borrowed value does not live long enough ... @@ -29,6 +35,9 @@ LL | } error[E0597]: `b1` does not live long enough --> $DIR/dropck_arr_cycle_checked.rs:99:24 | +LL | let (b1, b2, b3); + | -- binding `b1` declared here +... LL | b3.a[0].v.set(Some(&b1)); | ^^^ borrowed value does not live long enough ... diff --git a/tests/ui/span/dropck_direct_cycle_with_drop.stderr b/tests/ui/span/dropck_direct_cycle_with_drop.stderr index 07ae138ac71..1e75e3b2fa1 100644 --- a/tests/ui/span/dropck_direct_cycle_with_drop.stderr +++ b/tests/ui/span/dropck_direct_cycle_with_drop.stderr @@ -1,6 +1,8 @@ error[E0597]: `d2` does not live long enough --> $DIR/dropck_direct_cycle_with_drop.rs:36:19 | +LL | let (d1, d2) = (D::new(format!("d1")), D::new(format!("d2"))); + | -- binding `d2` declared here LL | d1.p.set(Some(&d2)); | ^^^ borrowed value does not live long enough ... @@ -15,6 +17,9 @@ LL | } error[E0597]: `d1` does not live long enough --> $DIR/dropck_direct_cycle_with_drop.rs:38:19 | +LL | let (d1, d2) = (D::new(format!("d1")), D::new(format!("d2"))); + | -- binding `d1` declared here +... LL | d2.p.set(Some(&d1)); | ^^^ borrowed value does not live long enough LL | diff --git a/tests/ui/span/dropck_misc_variants.stderr b/tests/ui/span/dropck_misc_variants.stderr index 76e90574cef..24a2c9089f5 100644 --- a/tests/ui/span/dropck_misc_variants.stderr +++ b/tests/ui/span/dropck_misc_variants.stderr @@ -1,6 +1,9 @@ error[E0597]: `bomb` does not live long enough --> $DIR/dropck_misc_variants.rs:23:36 | +LL | let (_w, bomb); + | ---- binding `bomb` declared here +LL | bomb = vec![""]; LL | _w = Wrap::<&[&str]>(NoisyDrop(&bomb)); | ^^^^^ borrowed value does not live long enough LL | } @@ -14,6 +17,9 @@ LL | } error[E0597]: `v` does not live long enough --> $DIR/dropck_misc_variants.rs:31:27 | +LL | let (_w,v); + | - binding `v` declared here +... LL | let u = NoisyDrop(&v); | ^^ borrowed value does not live long enough ... diff --git a/tests/ui/span/dropck_vec_cycle_checked.stderr b/tests/ui/span/dropck_vec_cycle_checked.stderr index 7ff991c0c37..5817439c0d8 100644 --- a/tests/ui/span/dropck_vec_cycle_checked.stderr +++ b/tests/ui/span/dropck_vec_cycle_checked.stderr @@ -1,6 +1,9 @@ error[E0597]: `c2` does not live long enough --> $DIR/dropck_vec_cycle_checked.rs:98:24 | +LL | let (mut c1, mut c2, mut c3); + | ------ binding `c2` declared here +... LL | c1.v[0].v.set(Some(&c2)); | ^^^ borrowed value does not live long enough ... @@ -15,6 +18,9 @@ LL | } error[E0597]: `c3` does not live long enough --> $DIR/dropck_vec_cycle_checked.rs:100:24 | +LL | let (mut c1, mut c2, mut c3); + | ------ binding `c3` declared here +... LL | c1.v[1].v.set(Some(&c3)); | ^^^ borrowed value does not live long enough ... @@ -29,6 +35,9 @@ LL | } error[E0597]: `c1` does not live long enough --> $DIR/dropck_vec_cycle_checked.rs:104:24 | +LL | let (mut c1, mut c2, mut c3); + | ------ binding `c1` declared here +... LL | c3.v[0].v.set(Some(&c1)); | ^^^ borrowed value does not live long enough ... diff --git a/tests/ui/span/issue-23338-locals-die-before-temps-of-body.stderr b/tests/ui/span/issue-23338-locals-die-before-temps-of-body.stderr index 3c2022748f0..e1a377203e2 100644 --- a/tests/ui/span/issue-23338-locals-die-before-temps-of-body.stderr +++ b/tests/ui/span/issue-23338-locals-die-before-temps-of-body.stderr @@ -1,6 +1,8 @@ error[E0597]: `y` does not live long enough --> $DIR/issue-23338-locals-die-before-temps-of-body.rs:10:5 | +LL | let y = x; + | - binding `y` declared here LL | y.borrow().clone() | ^^^^^^^^^^ | | @@ -22,6 +24,8 @@ LL | let x = y.borrow().clone(); x error[E0597]: `y` does not live long enough --> $DIR/issue-23338-locals-die-before-temps-of-body.rs:17:9 | +LL | let y = x; + | - binding `y` declared here LL | y.borrow().clone() | ^^^^^^^^^^ | | diff --git a/tests/ui/span/issue-24805-dropck-child-has-items-via-parent.stderr b/tests/ui/span/issue-24805-dropck-child-has-items-via-parent.stderr index 809e60a8c8a..c3b6d7580b4 100644 --- a/tests/ui/span/issue-24805-dropck-child-has-items-via-parent.stderr +++ b/tests/ui/span/issue-24805-dropck-child-has-items-via-parent.stderr @@ -1,6 +1,9 @@ error[E0597]: `d1` does not live long enough --> $DIR/issue-24805-dropck-child-has-items-via-parent.rs:28:18 | +LL | let (_d, d1); + | -- binding `d1` declared here +... LL | _d = D_Child(&d1); | ^^^ borrowed value does not live long enough ... diff --git a/tests/ui/span/issue-24805-dropck-trait-has-items.stderr b/tests/ui/span/issue-24805-dropck-trait-has-items.stderr index 2e217066915..e52c57d9ab1 100644 --- a/tests/ui/span/issue-24805-dropck-trait-has-items.stderr +++ b/tests/ui/span/issue-24805-dropck-trait-has-items.stderr @@ -1,6 +1,9 @@ error[E0597]: `d1` does not live long enough --> $DIR/issue-24805-dropck-trait-has-items.rs:37:26 | +LL | let (_d, d1); + | -- binding `d1` declared here +LL | d1 = D_HasSelfMethod(1); LL | _d = D_HasSelfMethod(&d1); | ^^^ borrowed value does not live long enough LL | } @@ -14,6 +17,9 @@ LL | } error[E0597]: `d1` does not live long enough --> $DIR/issue-24805-dropck-trait-has-items.rs:43:33 | +LL | let (_d, d1); + | -- binding `d1` declared here +LL | d1 = D_HasMethodWithSelfArg(1); LL | _d = D_HasMethodWithSelfArg(&d1); | ^^^ borrowed value does not live long enough LL | } @@ -27,6 +33,9 @@ LL | } error[E0597]: `d1` does not live long enough --> $DIR/issue-24805-dropck-trait-has-items.rs:49:20 | +LL | let (_d, d1); + | -- binding `d1` declared here +LL | d1 = D_HasType(1); LL | _d = D_HasType(&d1); | ^^^ borrowed value does not live long enough LL | } diff --git a/tests/ui/span/issue-24895-copy-clone-dropck.stderr b/tests/ui/span/issue-24895-copy-clone-dropck.stderr index 18a3dc9e6de..83db4d509d4 100644 --- a/tests/ui/span/issue-24895-copy-clone-dropck.stderr +++ b/tests/ui/span/issue-24895-copy-clone-dropck.stderr @@ -1,6 +1,9 @@ error[E0597]: `d1` does not live long enough --> $DIR/issue-24895-copy-clone-dropck.rs:27:14 | +LL | let (d2, d1); + | -- binding `d1` declared here +LL | d1 = D(34, "d1"); LL | d2 = D(S(&d1, "inner"), "d2"); | ^^^ borrowed value does not live long enough LL | } diff --git a/tests/ui/span/issue-25199.stderr b/tests/ui/span/issue-25199.stderr index d70a4afc1bf..1e0276f0c36 100644 --- a/tests/ui/span/issue-25199.stderr +++ b/tests/ui/span/issue-25199.stderr @@ -1,6 +1,8 @@ error[E0597]: `container` does not live long enough --> $DIR/issue-25199.rs:70:27 | +LL | let container = Container::new(); + | --------- binding `container` declared here LL | let test = Test{test: &container}; | ^^^^^^^^^^ borrowed value does not live long enough ... diff --git a/tests/ui/span/issue-26656.stderr b/tests/ui/span/issue-26656.stderr index 1e939c484fb..fea6e001238 100644 --- a/tests/ui/span/issue-26656.stderr +++ b/tests/ui/span/issue-26656.stderr @@ -1,6 +1,9 @@ error[E0597]: `ticking` does not live long enough --> $DIR/issue-26656.rs:40:35 | +LL | let (mut zook, ticking); + | ------- binding `ticking` declared here +... LL | zook.button = B::BigRedButton(&ticking); | ^^^^^^^^ borrowed value does not live long enough LL | } diff --git a/tests/ui/span/issue-29106.stderr b/tests/ui/span/issue-29106.stderr index 71fbd60ee73..28ee7acd90e 100644 --- a/tests/ui/span/issue-29106.stderr +++ b/tests/ui/span/issue-29106.stderr @@ -1,6 +1,9 @@ error[E0597]: `x` does not live long enough --> $DIR/issue-29106.rs:16:26 | +LL | let (y, x); + | - binding `x` declared here +LL | x = "alive".to_string(); LL | y = Arc::new(Foo(&x)); | ^^ borrowed value does not live long enough LL | } @@ -14,6 +17,9 @@ LL | } error[E0597]: `x` does not live long enough --> $DIR/issue-29106.rs:23:25 | +LL | let (y, x); + | - binding `x` declared here +LL | x = "alive".to_string(); LL | y = Rc::new(Foo(&x)); | ^^ borrowed value does not live long enough LL | } diff --git a/tests/ui/span/issue-36537.stderr b/tests/ui/span/issue-36537.stderr index 79a0ebaeb8d..6c330c1a094 100644 --- a/tests/ui/span/issue-36537.stderr +++ b/tests/ui/span/issue-36537.stderr @@ -1,6 +1,8 @@ error[E0597]: `a` does not live long enough --> $DIR/issue-36537.rs:5:13 | +LL | let a = 42; + | - binding `a` declared here LL | p = &a; | ^^ borrowed value does not live long enough ... diff --git a/tests/ui/span/issue-40157.stderr b/tests/ui/span/issue-40157.stderr index 57f80214a4f..a0afd33f7c7 100644 --- a/tests/ui/span/issue-40157.stderr +++ b/tests/ui/span/issue-40157.stderr @@ -2,11 +2,10 @@ error[E0597]: `foo` does not live long enough --> $DIR/issue-40157.rs:2:53 | LL | {println!("{:?}", match { let foo = vec![1, 2]; foo.get(1) } { x => x });} - | ------------------------^^^^^^^^^^-- - | | | | - | | | `foo` dropped here while still borrowed - | | borrowed value does not live long enough - | borrow later used here + | --- ^^^^^^^^^^ - `foo` dropped here while still borrowed + | | | + | | borrowed value does not live long enough + | binding `foo` declared here error: aborting due to previous error diff --git a/tests/ui/span/issue28498-reject-lifetime-param.stderr b/tests/ui/span/issue28498-reject-lifetime-param.stderr index 3119ddd03cc..94c450c7b1e 100644 --- a/tests/ui/span/issue28498-reject-lifetime-param.stderr +++ b/tests/ui/span/issue28498-reject-lifetime-param.stderr @@ -1,6 +1,9 @@ error[E0597]: `first_dropped` does not live long enough --> $DIR/issue28498-reject-lifetime-param.rs:32:19 | +LL | let (foo1, first_dropped); + | ------------- binding `first_dropped` declared here +... LL | foo1 = Foo(1, &first_dropped); | ^^^^^^^^^^^^^^ borrowed value does not live long enough ... diff --git a/tests/ui/span/issue28498-reject-passed-to-fn.stderr b/tests/ui/span/issue28498-reject-passed-to-fn.stderr index 60e8a648cd5..e133f75d57b 100644 --- a/tests/ui/span/issue28498-reject-passed-to-fn.stderr +++ b/tests/ui/span/issue28498-reject-passed-to-fn.stderr @@ -1,6 +1,9 @@ error[E0597]: `first_dropped` does not live long enough --> $DIR/issue28498-reject-passed-to-fn.rs:34:19 | +LL | let (foo1, first_dropped); + | ------------- binding `first_dropped` declared here +... LL | foo1 = Foo(1, &first_dropped, Box::new(callback)); | ^^^^^^^^^^^^^^ borrowed value does not live long enough ... diff --git a/tests/ui/span/issue28498-reject-trait-bound.stderr b/tests/ui/span/issue28498-reject-trait-bound.stderr index 22e4a8205b6..9ab3cdd1343 100644 --- a/tests/ui/span/issue28498-reject-trait-bound.stderr +++ b/tests/ui/span/issue28498-reject-trait-bound.stderr @@ -1,6 +1,9 @@ error[E0597]: `first_dropped` does not live long enough --> $DIR/issue28498-reject-trait-bound.rs:34:19 | +LL | let (foo1, first_dropped); + | ------------- binding `first_dropped` declared here +... LL | foo1 = Foo(1, &first_dropped); | ^^^^^^^^^^^^^^ borrowed value does not live long enough ... diff --git a/tests/ui/span/mut-ptr-cant-outlive-ref.stderr b/tests/ui/span/mut-ptr-cant-outlive-ref.stderr index 4d976a7bbfa..be56f9489c7 100644 --- a/tests/ui/span/mut-ptr-cant-outlive-ref.stderr +++ b/tests/ui/span/mut-ptr-cant-outlive-ref.stderr @@ -1,6 +1,8 @@ error[E0597]: `b` does not live long enough --> $DIR/mut-ptr-cant-outlive-ref.rs:8:15 | +LL | let b = m.borrow(); + | - binding `b` declared here LL | p = &*b; | ^ borrowed value does not live long enough LL | } diff --git a/tests/ui/span/range-2.stderr b/tests/ui/span/range-2.stderr index 8ca8156b083..d7084b00ba4 100644 --- a/tests/ui/span/range-2.stderr +++ b/tests/ui/span/range-2.stderr @@ -3,7 +3,9 @@ error[E0597]: `a` does not live long enough | LL | let r = { | - borrow later stored here -... +LL | let a = 42; + | - binding `a` declared here +LL | let b = 42; LL | &a..&b | ^^ borrowed value does not live long enough LL | }; @@ -14,7 +16,9 @@ error[E0597]: `b` does not live long enough | LL | let r = { | - borrow later stored here -... +LL | let a = 42; +LL | let b = 42; + | - binding `b` declared here LL | &a..&b | ^^ borrowed value does not live long enough LL | }; diff --git a/tests/ui/span/regionck-unboxed-closure-lifetimes.stderr b/tests/ui/span/regionck-unboxed-closure-lifetimes.stderr index 0b985de609c..fb3fad6ae90 100644 --- a/tests/ui/span/regionck-unboxed-closure-lifetimes.stderr +++ b/tests/ui/span/regionck-unboxed-closure-lifetimes.stderr @@ -1,6 +1,8 @@ error[E0597]: `c` does not live long enough --> $DIR/regionck-unboxed-closure-lifetimes.rs:8:21 | +LL | let c = 1; + | - binding `c` declared here LL | let c_ref = &c; | ^^ borrowed value does not live long enough ... diff --git a/tests/ui/span/regions-close-over-type-parameter-2.stderr b/tests/ui/span/regions-close-over-type-parameter-2.stderr index 2e584d9a884..fed40a4fdd2 100644 --- a/tests/ui/span/regions-close-over-type-parameter-2.stderr +++ b/tests/ui/span/regions-close-over-type-parameter-2.stderr @@ -1,6 +1,8 @@ error[E0597]: `tmp0` does not live long enough --> $DIR/regions-close-over-type-parameter-2.rs:23:20 | +LL | let tmp0 = 3; + | ---- binding `tmp0` declared here LL | let tmp1 = &tmp0; | ^^^^^ borrowed value does not live long enough LL | repeater3(tmp1) diff --git a/tests/ui/span/regions-escape-loop-via-variable.stderr b/tests/ui/span/regions-escape-loop-via-variable.stderr index 42df6685297..e5c7d8b26ab 100644 --- a/tests/ui/span/regions-escape-loop-via-variable.stderr +++ b/tests/ui/span/regions-escape-loop-via-variable.stderr @@ -2,7 +2,9 @@ error[E0597]: `x` does not live long enough --> $DIR/regions-escape-loop-via-variable.rs:11:13 | LL | let x = 1 + *p; - | -- borrow later used here + | - -- borrow later used here + | | + | binding `x` declared here LL | p = &x; | ^^ borrowed value does not live long enough LL | } diff --git a/tests/ui/span/regions-escape-loop-via-vec.stderr b/tests/ui/span/regions-escape-loop-via-vec.stderr index 2b649307739..532ac3606c5 100644 --- a/tests/ui/span/regions-escape-loop-via-vec.stderr +++ b/tests/ui/span/regions-escape-loop-via-vec.stderr @@ -2,7 +2,7 @@ error[E0503]: cannot use `x` because it was mutably borrowed --> $DIR/regions-escape-loop-via-vec.rs:5:11 | LL | let mut _y = vec![&mut x]; - | ------ borrow of `x` occurs here + | ------ `x` is borrowed here LL | while x < 10 { | ^ use of borrowed `x` LL | let mut z = x; @@ -13,7 +13,7 @@ error[E0503]: cannot use `x` because it was mutably borrowed --> $DIR/regions-escape-loop-via-vec.rs:6:21 | LL | let mut _y = vec![&mut x]; - | ------ borrow of `x` occurs here + | ------ `x` is borrowed here LL | while x < 10 { LL | let mut z = x; | ^ use of borrowed `x` @@ -23,11 +23,10 @@ LL | _y.push(&mut z); error[E0597]: `z` does not live long enough --> $DIR/regions-escape-loop-via-vec.rs:7:17 | +LL | let mut z = x; + | ----- binding `z` declared here LL | _y.push(&mut z); - | --------^^^^^^- - | | | - | | borrowed value does not live long enough - | borrow later used here + | ^^^^^^ borrowed value does not live long enough ... LL | } | - `z` dropped here while still borrowed @@ -36,7 +35,7 @@ error[E0503]: cannot use `x` because it was mutably borrowed --> $DIR/regions-escape-loop-via-vec.rs:9:9 | LL | let mut _y = vec![&mut x]; - | ------ borrow of `x` occurs here + | ------ `x` is borrowed here ... LL | _y.push(&mut z); | --------------- borrow later used here diff --git a/tests/ui/span/regions-infer-borrow-scope-within-loop.stderr b/tests/ui/span/regions-infer-borrow-scope-within-loop.stderr index fd67c65c4e9..47931db84ca 100644 --- a/tests/ui/span/regions-infer-borrow-scope-within-loop.stderr +++ b/tests/ui/span/regions-infer-borrow-scope-within-loop.stderr @@ -1,6 +1,9 @@ error[E0597]: `*x` does not live long enough --> $DIR/regions-infer-borrow-scope-within-loop.rs:13:20 | +LL | let x = make_box(); + | - binding `x` declared here +... LL | y = borrow(&*x); | ^^^ borrowed value does not live long enough ... diff --git a/tests/ui/span/send-is-not-static-ensures-scoping.stderr b/tests/ui/span/send-is-not-static-ensures-scoping.stderr index 65d10c1305b..bae0befcaca 100644 --- a/tests/ui/span/send-is-not-static-ensures-scoping.stderr +++ b/tests/ui/span/send-is-not-static-ensures-scoping.stderr @@ -4,6 +4,7 @@ error[E0597]: `x` does not live long enough LL | let bad = { | --- borrow later stored here LL | let x = 1; + | - binding `x` declared here LL | let y = &x; | ^^ borrowed value does not live long enough ... diff --git a/tests/ui/span/send-is-not-static-std-sync-2.stderr b/tests/ui/span/send-is-not-static-std-sync-2.stderr index bcd07e11647..b0267fa6f43 100644 --- a/tests/ui/span/send-is-not-static-std-sync-2.stderr +++ b/tests/ui/span/send-is-not-static-std-sync-2.stderr @@ -4,6 +4,7 @@ error[E0597]: `x` does not live long enough LL | let lock = { | ---- borrow later stored here LL | let x = 1; + | - binding `x` declared here LL | Mutex::new(&x) | ^^ borrowed value does not live long enough LL | }; @@ -15,6 +16,7 @@ error[E0597]: `x` does not live long enough LL | let lock = { | ---- borrow later stored here LL | let x = 1; + | - binding `x` declared here LL | RwLock::new(&x) | ^^ borrowed value does not live long enough LL | }; @@ -25,7 +27,9 @@ error[E0597]: `x` does not live long enough | LL | let (_tx, rx) = { | --- borrow later used here -... +LL | let x = 1; + | - binding `x` declared here +LL | let (tx, rx) = mpsc::channel(); LL | let _ = tx.send(&x); | ^^ borrowed value does not live long enough LL | (tx, rx) diff --git a/tests/ui/span/send-is-not-static-std-sync.stderr b/tests/ui/span/send-is-not-static-std-sync.stderr index 5d493a3e4ee..7dfe94bca60 100644 --- a/tests/ui/span/send-is-not-static-std-sync.stderr +++ b/tests/ui/span/send-is-not-static-std-sync.stderr @@ -1,6 +1,9 @@ error[E0505]: cannot move out of `y` because it is borrowed --> $DIR/send-is-not-static-std-sync.rs:13:10 | +LL | let y = Box::new(1); + | - binding `y` declared here +LL | let lock = Mutex::new(&x); LL | *lock.lock().unwrap() = &*y; | --- borrow of `*y` occurs here LL | drop(y); @@ -12,6 +15,8 @@ LL | *lock.lock().unwrap() = &z; error[E0597]: `z` does not live long enough --> $DIR/send-is-not-static-std-sync.rs:16:33 | +LL | let z = 2; + | - binding `z` declared here LL | *lock.lock().unwrap() = &z; | ^^ borrowed value does not live long enough LL | } @@ -23,6 +28,9 @@ LL | lock.use_ref(); // (Mutex is #[may_dangle] so its dtor does not use `z` error[E0505]: cannot move out of `y` because it is borrowed --> $DIR/send-is-not-static-std-sync.rs:27:10 | +LL | let y = Box::new(1); + | - binding `y` declared here +LL | let lock = RwLock::new(&x); LL | *lock.write().unwrap() = &*y; | --- borrow of `*y` occurs here LL | drop(y); @@ -34,6 +42,8 @@ LL | *lock.write().unwrap() = &z; error[E0597]: `z` does not live long enough --> $DIR/send-is-not-static-std-sync.rs:30:34 | +LL | let z = 2; + | - binding `z` declared here LL | *lock.write().unwrap() = &z; | ^^ borrowed value does not live long enough LL | } @@ -45,6 +55,9 @@ LL | lock.use_ref(); // (RwLock is #[may_dangle] so its dtor does not use `z error[E0505]: cannot move out of `y` because it is borrowed --> $DIR/send-is-not-static-std-sync.rs:43:10 | +LL | let y = Box::new(1); + | - binding `y` declared here +... LL | tx.send(&*y); | --- borrow of `*y` occurs here LL | drop(y); @@ -56,6 +69,8 @@ LL | tx.send(&z).unwrap(); error[E0597]: `z` does not live long enough --> $DIR/send-is-not-static-std-sync.rs:46:17 | +LL | let z = 2; + | - binding `z` declared here LL | tx.send(&z).unwrap(); | ^^ borrowed value does not live long enough LL | } diff --git a/tests/ui/span/vec-must-not-hide-type-from-dropck.stderr b/tests/ui/span/vec-must-not-hide-type-from-dropck.stderr index f87c32d1ad0..f2fefca414e 100644 --- a/tests/ui/span/vec-must-not-hide-type-from-dropck.stderr +++ b/tests/ui/span/vec-must-not-hide-type-from-dropck.stderr @@ -1,6 +1,9 @@ error[E0597]: `c2` does not live long enough --> $DIR/vec-must-not-hide-type-from-dropck.rs:117:24 | +LL | let (mut c1, mut c2); + | ------ binding `c2` declared here +... LL | c1.v[0].v.set(Some(&c2)); | ^^^ borrowed value does not live long enough ... @@ -15,6 +18,9 @@ LL | } error[E0597]: `c1` does not live long enough --> $DIR/vec-must-not-hide-type-from-dropck.rs:119:24 | +LL | let (mut c1, mut c2); + | ------ binding `c1` declared here +... LL | c2.v[0].v.set(Some(&c1)); | ^^^ borrowed value does not live long enough LL | diff --git a/tests/ui/span/vec_refs_data_with_early_death.stderr b/tests/ui/span/vec_refs_data_with_early_death.stderr index 684e7845313..73f27144af4 100644 --- a/tests/ui/span/vec_refs_data_with_early_death.stderr +++ b/tests/ui/span/vec_refs_data_with_early_death.stderr @@ -1,6 +1,9 @@ error[E0597]: `x` does not live long enough --> $DIR/vec_refs_data_with_early_death.rs:17:12 | +LL | let x: i8 = 3; + | - binding `x` declared here +... LL | v.push(&x); | ^^ borrowed value does not live long enough ... @@ -15,6 +18,9 @@ LL | } error[E0597]: `y` does not live long enough --> $DIR/vec_refs_data_with_early_death.rs:19:12 | +LL | let y: i8 = 4; + | - binding `y` declared here +... LL | v.push(&y); | ^^ borrowed value does not live long enough ... diff --git a/tests/ui/span/wf-method-late-bound-regions.stderr b/tests/ui/span/wf-method-late-bound-regions.stderr index 6b0b008208f..64c2d0f1606 100644 --- a/tests/ui/span/wf-method-late-bound-regions.stderr +++ b/tests/ui/span/wf-method-late-bound-regions.stderr @@ -4,6 +4,7 @@ error[E0597]: `pointer` does not live long enough LL | let dangling = { | -------- borrow later stored here LL | let pointer = Box::new(42); + | ------- binding `pointer` declared here LL | f2.xmute(&pointer) | ^^^^^^^^ borrowed value does not live long enough LL | }; diff --git a/tests/ui/static/static-lifetime-bound.stderr b/tests/ui/static/static-lifetime-bound.stderr index ef07a89315f..e22411b13b7 100644 --- a/tests/ui/static/static-lifetime-bound.stderr +++ b/tests/ui/static/static-lifetime-bound.stderr @@ -9,6 +9,8 @@ LL | fn f<'a: 'static>(_: &'a i32) {} error[E0597]: `x` does not live long enough --> $DIR/static-lifetime-bound.rs:5:7 | +LL | let x = 0; + | - binding `x` declared here LL | f(&x); | --^^- | | | diff --git a/tests/ui/static/static-reference-to-fn-1.stderr b/tests/ui/static/static-reference-to-fn-1.stderr index 67b478bdb75..f68939d0ec8 100644 --- a/tests/ui/static/static-reference-to-fn-1.stderr +++ b/tests/ui/static/static-reference-to-fn-1.stderr @@ -2,10 +2,14 @@ error[E0308]: mismatched types --> $DIR/static-reference-to-fn-1.rs:17:15 | LL | func: &foo, - | ^^^^ expected fn pointer, found fn item + | ^^^^ + | | + | expected fn pointer, found fn item + | help: consider casting to a fn pointer: `&(foo as fn() -> Option<isize>)` | = note: expected reference `&fn() -> Option<isize>` found reference `&fn() -> Option<isize> {foo}` + = note: fn items are distinct from fn pointers error: aborting due to previous error diff --git a/tests/ui/stdlib-unit-tests/not-sync.stderr b/tests/ui/stdlib-unit-tests/not-sync.stderr index 1ee358ba836..4e34e10e377 100644 --- a/tests/ui/stdlib-unit-tests/not-sync.stderr +++ b/tests/ui/stdlib-unit-tests/not-sync.stderr @@ -5,6 +5,7 @@ LL | test::<Cell<i32>>(); | ^^^^^^^^^ `Cell<i32>` cannot be shared between threads safely | = help: the trait `Sync` is not implemented for `Cell<i32>` + = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicI32` instead note: required by a bound in `test` --> $DIR/not-sync.rs:5:12 | @@ -18,6 +19,7 @@ LL | test::<RefCell<i32>>(); | ^^^^^^^^^^^^ `RefCell<i32>` cannot be shared between threads safely | = help: the trait `Sync` is not implemented for `RefCell<i32>` + = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead note: required by a bound in `test` --> $DIR/not-sync.rs:5:12 | diff --git a/tests/ui/suggestions/borrow-for-loop-head.stderr b/tests/ui/suggestions/borrow-for-loop-head.stderr index cbdb94877bd..0f179438a12 100644 --- a/tests/ui/suggestions/borrow-for-loop-head.stderr +++ b/tests/ui/suggestions/borrow-for-loop-head.stderr @@ -1,6 +1,8 @@ error[E0505]: cannot move out of `a` because it is borrowed --> $DIR/borrow-for-loop-head.rs:4:18 | +LL | let a = vec![1, 2, 3]; + | - binding `a` declared here LL | for i in &a { | -- borrow of `a` occurs here LL | for j in a { diff --git a/tests/ui/suggestions/issue-88730.rs b/tests/ui/suggestions/issue-88730.rs index e63210a3e98..d161ed284f6 100644 --- a/tests/ui/suggestions/issue-88730.rs +++ b/tests/ui/suggestions/issue-88730.rs @@ -1,9 +1,8 @@ #![allow(unused, nonstandard_style)] -#![deny(bindings_with_variant_name)] // If an enum has two different variants, // then it cannot be matched upon in a function argument. -// It still gets a warning, but no suggestions. +// It still gets an error, but no suggestions. enum Foo { C, D, diff --git a/tests/ui/suggestions/issue-88730.stderr b/tests/ui/suggestions/issue-88730.stderr index eb22b0ea5c8..0bd1b7ba4ba 100644 --- a/tests/ui/suggestions/issue-88730.stderr +++ b/tests/ui/suggestions/issue-88730.stderr @@ -1,17 +1,13 @@ error[E0170]: pattern binding `C` is named the same as one of the variants of the type `Foo` - --> $DIR/issue-88730.rs:12:8 + --> $DIR/issue-88730.rs:11:8 | LL | fn foo(C: Foo) {} | ^ | -note: the lint level is defined here - --> $DIR/issue-88730.rs:2:9 - | -LL | #![deny(bindings_with_variant_name)] - | ^^^^^^^^^^^^^^^^^^^^^^^^^^ + = note: `#[deny(bindings_with_variant_name)]` on by default error[E0170]: pattern binding `C` is named the same as one of the variants of the type `Foo` - --> $DIR/issue-88730.rs:15:9 + --> $DIR/issue-88730.rs:14:9 | LL | let C = Foo::D; | ^ diff --git a/tests/ui/suggestions/option-content-move2.stderr b/tests/ui/suggestions/option-content-move2.stderr index 1d3dff3be34..94acda73c4e 100644 --- a/tests/ui/suggestions/option-content-move2.stderr +++ b/tests/ui/suggestions/option-content-move2.stderr @@ -7,7 +7,7 @@ LL | func(|| { | -- captured by this `FnMut` closure LL | // Shouldn't suggest `move ||.as_ref()` here LL | move || { - | ^^^^^^^ move out of `var` occurs here + | ^^^^^^^ `var` is moved here LL | LL | var = Some(NotCopyable); | --- diff --git a/tests/ui/suggestions/suggest-remove-deref.fixed b/tests/ui/suggestions/suggest-remove-deref.fixed new file mode 100644 index 00000000000..4dc12da03dd --- /dev/null +++ b/tests/ui/suggestions/suggest-remove-deref.fixed @@ -0,0 +1,28 @@ +// run-rustfix + +//issue #106496 + +struct S; + +trait X {} +impl X for S {} + +fn foo<T: X>(_: &T) {} +fn test_foo() { + let hello = &S; + foo(hello); + //~^ ERROR mismatched types +} + +fn bar(_: &String) {} +fn test_bar() { + let v = String::from("hello"); + let s = &v; + bar(s); + //~^ ERROR mismatched types +} + +fn main() { + test_foo(); + test_bar(); +} diff --git a/tests/ui/suggestions/suggest-remove-deref.rs b/tests/ui/suggestions/suggest-remove-deref.rs new file mode 100644 index 00000000000..c2d385cbdc3 --- /dev/null +++ b/tests/ui/suggestions/suggest-remove-deref.rs @@ -0,0 +1,28 @@ +// run-rustfix + +//issue #106496 + +struct S; + +trait X {} +impl X for S {} + +fn foo<T: X>(_: &T) {} +fn test_foo() { + let hello = &S; + foo(*hello); + //~^ ERROR mismatched types +} + +fn bar(_: &String) {} +fn test_bar() { + let v = String::from("hello"); + let s = &v; + bar(*s); + //~^ ERROR mismatched types +} + +fn main() { + test_foo(); + test_bar(); +} diff --git a/tests/ui/suggestions/suggest-remove-deref.stderr b/tests/ui/suggestions/suggest-remove-deref.stderr new file mode 100644 index 00000000000..f5d810e36f0 --- /dev/null +++ b/tests/ui/suggestions/suggest-remove-deref.stderr @@ -0,0 +1,43 @@ +error[E0308]: mismatched types + --> $DIR/suggest-remove-deref.rs:13:9 + | +LL | foo(*hello); + | --- ^^^^^^ expected reference, found struct `S` + | | + | arguments to this function are incorrect + | + = note: expected reference `&_` + found struct `S` +note: function defined here + --> $DIR/suggest-remove-deref.rs:10:4 + | +LL | fn foo<T: X>(_: &T) {} + | ^^^ ----- +help: consider removing deref here + | +LL - foo(*hello); +LL + foo(hello); + | + +error[E0308]: mismatched types + --> $DIR/suggest-remove-deref.rs:21:9 + | +LL | bar(*s); + | --- ^^ expected `&String`, found struct `String` + | | + | arguments to this function are incorrect + | +note: function defined here + --> $DIR/suggest-remove-deref.rs:17:4 + | +LL | fn bar(_: &String) {} + | ^^^ ---------- +help: consider removing deref here + | +LL - bar(*s); +LL + bar(s); + | + +error: aborting due to 2 previous errors + +For more information about this error, try `rustc --explain E0308`. diff --git a/tests/ui/mutexguard-sync.rs b/tests/ui/sync/mutexguard-sync.rs index b5641838318..b5641838318 100644 --- a/tests/ui/mutexguard-sync.rs +++ b/tests/ui/sync/mutexguard-sync.rs diff --git a/tests/ui/mutexguard-sync.stderr b/tests/ui/sync/mutexguard-sync.stderr index 3fbb2ddf183..4dc5571196c 100644 --- a/tests/ui/mutexguard-sync.stderr +++ b/tests/ui/sync/mutexguard-sync.stderr @@ -7,6 +7,7 @@ LL | test_sync(guard); | required by a bound introduced by this call | = help: the trait `Sync` is not implemented for `Cell<i32>` + = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicI32` instead = note: required for `MutexGuard<'_, Cell<i32>>` to implement `Sync` note: required by a bound in `test_sync` --> $DIR/mutexguard-sync.rs:5:17 diff --git a/tests/ui/sync/suggest-cell.rs b/tests/ui/sync/suggest-cell.rs new file mode 100644 index 00000000000..3284eae7be1 --- /dev/null +++ b/tests/ui/sync/suggest-cell.rs @@ -0,0 +1,31 @@ +fn require_sync<T: Sync>() {} +//~^ NOTE required by this bound in `require_sync` +//~| NOTE required by this bound in `require_sync` +//~| NOTE required by this bound in `require_sync` +//~| NOTE required by this bound in `require_sync` +//~| NOTE required by a bound in `require_sync` +//~| NOTE required by a bound in `require_sync` +//~| NOTE required by a bound in `require_sync` +//~| NOTE required by a bound in `require_sync` + +fn main() { + require_sync::<std::cell::Cell<()>>(); + //~^ ERROR `Cell<()>` cannot be shared between threads safely + //~| NOTE `Cell<()>` cannot be shared between threads safely + //~| NOTE if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` + + require_sync::<std::cell::Cell<u8>>(); + //~^ ERROR `Cell<u8>` cannot be shared between threads safely + //~| NOTE `Cell<u8>` cannot be shared between threads safely + //~| NOTE if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicU8` instead + + require_sync::<std::cell::Cell<i32>>(); + //~^ ERROR `Cell<i32>` cannot be shared between threads safely + //~| NOTE `Cell<i32>` cannot be shared between threads safely + //~| NOTE if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicI32` instead + + require_sync::<std::cell::Cell<bool>>(); + //~^ ERROR `Cell<bool>` cannot be shared between threads safely + //~| NOTE `Cell<bool>` cannot be shared between threads safely + //~| NOTE if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicBool` instead +} diff --git a/tests/ui/sync/suggest-cell.stderr b/tests/ui/sync/suggest-cell.stderr new file mode 100644 index 00000000000..c232c1ccd53 --- /dev/null +++ b/tests/ui/sync/suggest-cell.stderr @@ -0,0 +1,59 @@ +error[E0277]: `Cell<()>` cannot be shared between threads safely + --> $DIR/suggest-cell.rs:12:20 + | +LL | require_sync::<std::cell::Cell<()>>(); + | ^^^^^^^^^^^^^^^^^^^ `Cell<()>` cannot be shared between threads safely + | + = help: the trait `Sync` is not implemented for `Cell<()>` + = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` +note: required by a bound in `require_sync` + --> $DIR/suggest-cell.rs:1:20 + | +LL | fn require_sync<T: Sync>() {} + | ^^^^ required by this bound in `require_sync` + +error[E0277]: `Cell<u8>` cannot be shared between threads safely + --> $DIR/suggest-cell.rs:17:20 + | +LL | require_sync::<std::cell::Cell<u8>>(); + | ^^^^^^^^^^^^^^^^^^^ `Cell<u8>` cannot be shared between threads safely + | + = help: the trait `Sync` is not implemented for `Cell<u8>` + = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicU8` instead +note: required by a bound in `require_sync` + --> $DIR/suggest-cell.rs:1:20 + | +LL | fn require_sync<T: Sync>() {} + | ^^^^ required by this bound in `require_sync` + +error[E0277]: `Cell<i32>` cannot be shared between threads safely + --> $DIR/suggest-cell.rs:22:20 + | +LL | require_sync::<std::cell::Cell<i32>>(); + | ^^^^^^^^^^^^^^^^^^^^ `Cell<i32>` cannot be shared between threads safely + | + = help: the trait `Sync` is not implemented for `Cell<i32>` + = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicI32` instead +note: required by a bound in `require_sync` + --> $DIR/suggest-cell.rs:1:20 + | +LL | fn require_sync<T: Sync>() {} + | ^^^^ required by this bound in `require_sync` + +error[E0277]: `Cell<bool>` cannot be shared between threads safely + --> $DIR/suggest-cell.rs:27:20 + | +LL | require_sync::<std::cell::Cell<bool>>(); + | ^^^^^^^^^^^^^^^^^^^^^ `Cell<bool>` cannot be shared between threads safely + | + = help: the trait `Sync` is not implemented for `Cell<bool>` + = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicBool` instead +note: required by a bound in `require_sync` + --> $DIR/suggest-cell.rs:1:20 + | +LL | fn require_sync<T: Sync>() {} + | ^^^^ required by this bound in `require_sync` + +error: aborting due to 4 previous errors + +For more information about this error, try `rustc --explain E0277`. diff --git a/tests/ui/sync/suggest-once-cell.rs b/tests/ui/sync/suggest-once-cell.rs new file mode 100644 index 00000000000..82fca45b1a4 --- /dev/null +++ b/tests/ui/sync/suggest-once-cell.rs @@ -0,0 +1,12 @@ +#![feature(once_cell)] + +fn require_sync<T: Sync>() {} +//~^ NOTE required by this bound in `require_sync` +//~| NOTE required by a bound in `require_sync` + +fn main() { + require_sync::<std::cell::OnceCell<()>>(); + //~^ ERROR `OnceCell<()>` cannot be shared between threads safely + //~| NOTE `OnceCell<()>` cannot be shared between threads safely + //~| NOTE use `std::sync::OnceLock` instead +} diff --git a/tests/ui/sync/suggest-once-cell.stderr b/tests/ui/sync/suggest-once-cell.stderr new file mode 100644 index 00000000000..fadf05374d8 --- /dev/null +++ b/tests/ui/sync/suggest-once-cell.stderr @@ -0,0 +1,17 @@ +error[E0277]: `OnceCell<()>` cannot be shared between threads safely + --> $DIR/suggest-once-cell.rs:8:20 + | +LL | require_sync::<std::cell::OnceCell<()>>(); + | ^^^^^^^^^^^^^^^^^^^^^^^ `OnceCell<()>` cannot be shared between threads safely + | + = help: the trait `Sync` is not implemented for `OnceCell<()>` + = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::OnceLock` instead +note: required by a bound in `require_sync` + --> $DIR/suggest-once-cell.rs:3:20 + | +LL | fn require_sync<T: Sync>() {} + | ^^^^ required by this bound in `require_sync` + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0277`. diff --git a/tests/ui/sync/suggest-ref-cell.rs b/tests/ui/sync/suggest-ref-cell.rs new file mode 100644 index 00000000000..6b972ae0962 --- /dev/null +++ b/tests/ui/sync/suggest-ref-cell.rs @@ -0,0 +1,12 @@ +#![feature(once_cell)] + +fn require_sync<T: Sync>() {} +//~^ NOTE required by this bound in `require_sync` +//~| NOTE required by a bound in `require_sync` + +fn main() { + require_sync::<std::cell::RefCell<()>>(); + //~^ ERROR `RefCell<()>` cannot be shared between threads safely + //~| NOTE `RefCell<()>` cannot be shared between threads safely + //~| NOTE use `std::sync::RwLock` instead +} diff --git a/tests/ui/sync/suggest-ref-cell.stderr b/tests/ui/sync/suggest-ref-cell.stderr new file mode 100644 index 00000000000..9e8b8fcb42e --- /dev/null +++ b/tests/ui/sync/suggest-ref-cell.stderr @@ -0,0 +1,17 @@ +error[E0277]: `RefCell<()>` cannot be shared between threads safely + --> $DIR/suggest-ref-cell.rs:8:20 + | +LL | require_sync::<std::cell::RefCell<()>>(); + | ^^^^^^^^^^^^^^^^^^^^^^ `RefCell<()>` cannot be shared between threads safely + | + = help: the trait `Sync` is not implemented for `RefCell<()>` + = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead +note: required by a bound in `require_sync` + --> $DIR/suggest-ref-cell.rs:3:20 + | +LL | fn require_sync<T: Sync>() {} + | ^^^^ required by this bound in `require_sync` + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0277`. diff --git a/tests/ui/traits/associated_type_bound/check-trait-object-bounds-3.stderr b/tests/ui/traits/associated_type_bound/check-trait-object-bounds-3.stderr index ade552c4bab..c7af71a4214 100644 --- a/tests/ui/traits/associated_type_bound/check-trait-object-bounds-3.stderr +++ b/tests/ui/traits/associated_type_bound/check-trait-object-bounds-3.stderr @@ -1,6 +1,8 @@ error[E0597]: `s` does not live long enough --> $DIR/check-trait-object-bounds-3.rs:15:34 | +LL | let s = String::from("abcdef"); + | - binding `s` declared here LL | z = f::<dyn X<Y = &str>>(&s); | ---------------------^^- | | | diff --git a/tests/ui/traits/coercion-generic-regions.stderr b/tests/ui/traits/coercion-generic-regions.stderr index 5cfb6490123..ae70202ab7c 100644 --- a/tests/ui/traits/coercion-generic-regions.stderr +++ b/tests/ui/traits/coercion-generic-regions.stderr @@ -1,6 +1,8 @@ error[E0597]: `person` does not live long enough --> $DIR/coercion-generic-regions.rs:17:24 | +LL | let person = "Fred".to_string(); + | ------ binding `person` declared here LL | let person: &str = &person; | ^^^^^^^ | | diff --git a/tests/ui/traits/copy-impl-cannot-normalize.stderr b/tests/ui/traits/copy-impl-cannot-normalize.stderr index 68b95b42b34..86c511c0895 100644 --- a/tests/ui/traits/copy-impl-cannot-normalize.stderr +++ b/tests/ui/traits/copy-impl-cannot-normalize.stderr @@ -4,6 +4,16 @@ error[E0277]: the trait bound `T: TraitFoo` is not satisfied LL | impl<T> Copy for Foo<T> {} | ^^^^^^ the trait `TraitFoo` is not implemented for `T` | +note: required for `Foo<T>` to implement `Clone` + --> $DIR/copy-impl-cannot-normalize.rs:12:9 + | +LL | impl<T> Clone for Foo<T> + | ^^^^^ ^^^^^^ +LL | where +LL | T: TraitFoo, + | -------- unsatisfied trait bound introduced here +note: required by a bound in `Copy` + --> $SRC_DIR/core/src/marker.rs:LL:COL help: consider restricting type parameter `T` | LL | impl<T: TraitFoo> Copy for Foo<T> {} diff --git a/tests/ui/traits/copy-is-not-modulo-regions.not_static.stderr b/tests/ui/traits/copy-is-not-modulo-regions.not_static.stderr new file mode 100644 index 00000000000..edd94d2010b --- /dev/null +++ b/tests/ui/traits/copy-is-not-modulo-regions.not_static.stderr @@ -0,0 +1,22 @@ +error[E0204]: the trait `Copy` may not be implemented for this type + --> $DIR/copy-is-not-modulo-regions.rs:13:21 + | +LL | struct Bar<'lt>(Foo<'lt>); + | -------- this field does not implement `Copy` +... +LL | impl<'any> Copy for Bar<'any> {} + | ^^^^^^^^^ + | +note: the `Copy` impl for `Foo<'any>` requires that `'any: 'static` + --> $DIR/copy-is-not-modulo-regions.rs:10:17 + | +LL | struct Bar<'lt>(Foo<'lt>); + | ^^^^^^^^ +help: consider restricting type parameter `'any` + | +LL | impl<'any: 'static> Copy for Bar<'any> {} + | +++++++++ + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0204`. diff --git a/tests/ui/traits/copy-is-not-modulo-regions.rs b/tests/ui/traits/copy-is-not-modulo-regions.rs new file mode 100644 index 00000000000..adb87023769 --- /dev/null +++ b/tests/ui/traits/copy-is-not-modulo-regions.rs @@ -0,0 +1,19 @@ +// revisions: not_static yes_static +//[yes_static] check-pass + +#[derive(Clone)] +struct Foo<'lt>(&'lt ()); + +impl Copy for Foo<'static> {} + +#[derive(Clone)] +struct Bar<'lt>(Foo<'lt>); + +#[cfg(not_static)] +impl<'any> Copy for Bar<'any> {} +//[not_static]~^ the trait `Copy` may not be implemented for this type + +#[cfg(yes_static)] +impl<'any> Copy for Bar<'static> {} + +fn main() {} diff --git a/tests/ui/traits/copy-requires-self-wf.rs b/tests/ui/traits/copy-requires-self-wf.rs new file mode 100644 index 00000000000..9abfdfab9d0 --- /dev/null +++ b/tests/ui/traits/copy-requires-self-wf.rs @@ -0,0 +1,14 @@ +// check-pass + +#[derive(Clone)] +struct A<'a, T>(&'a T); + +impl<'a, T: Copy + 'a> Copy for A<'a, T> {} + +#[derive(Clone)] +struct B<'a, T>(A<'a, T>); + +// `T: '_` should be implied by `WF(B<'_, T>)`. +impl<T: Copy> Copy for B<'_, T> {} + +fn main() {} diff --git a/tests/ui/traits/issue-50480.rs b/tests/ui/traits/issue-50480.rs index 10597caf5b2..005939e0c46 100644 --- a/tests/ui/traits/issue-50480.rs +++ b/tests/ui/traits/issue-50480.rs @@ -5,13 +5,11 @@ struct Foo(N, NotDefined, <i32 as Iterator>::Item, Vec<i32>, String); //~| ERROR cannot find type `NotDefined` in this scope //~| ERROR cannot find type `N` in this scope //~| ERROR cannot find type `N` in this scope -//~| ERROR `i32` is not an iterator #[derive(Clone, Copy)] //~^ ERROR the trait `Copy` may not be implemented for this type struct Bar<T>(T, N, NotDefined, <i32 as Iterator>::Item, Vec<i32>, String); //~^ ERROR cannot find type `NotDefined` in this scope //~| ERROR cannot find type `N` in this scope -//~| ERROR `i32` is not an iterator fn main() {} diff --git a/tests/ui/traits/issue-50480.stderr b/tests/ui/traits/issue-50480.stderr index aa8384e9805..5063fdca092 100644 --- a/tests/ui/traits/issue-50480.stderr +++ b/tests/ui/traits/issue-50480.stderr @@ -38,7 +38,7 @@ LL | struct Foo<NotDefined>(N, NotDefined, <i32 as Iterator>::Item, Vec<i32>, St | ++++++++++++ error[E0412]: cannot find type `N` in this scope - --> $DIR/issue-50480.rs:12:18 + --> $DIR/issue-50480.rs:11:18 | LL | struct Bar<T>(T, N, NotDefined, <i32 as Iterator>::Item, Vec<i32>, String); | - ^ @@ -55,20 +55,11 @@ LL | struct Bar<T, N>(T, N, NotDefined, <i32 as Iterator>::Item, Vec<i32>, Strin | +++ error[E0412]: cannot find type `NotDefined` in this scope - --> $DIR/issue-50480.rs:12:21 + --> $DIR/issue-50480.rs:11:21 | LL | struct Bar<T>(T, N, NotDefined, <i32 as Iterator>::Item, Vec<i32>, String); | ^^^^^^^^^^ not found in this scope -error[E0277]: `i32` is not an iterator - --> $DIR/issue-50480.rs:3:27 - | -LL | struct Foo(N, NotDefined, <i32 as Iterator>::Item, Vec<i32>, String); - | ^^^^^^^^^^^^^^^^^^^^^^^ `i32` is not an iterator - | - = help: the trait `Iterator` is not implemented for `i32` - = note: if you want to iterate between `start` until a value `end`, use the exclusive range syntax `start..end` or the inclusive range syntax `start..=end` - error[E0204]: the trait `Copy` may not be implemented for this type --> $DIR/issue-50480.rs:1:17 | @@ -82,17 +73,8 @@ LL | struct Foo(N, NotDefined, <i32 as Iterator>::Item, Vec<i32>, String); | = note: this error originates in the derive macro `Copy` (in Nightly builds, run with -Z macro-backtrace for more info) -error[E0277]: `i32` is not an iterator - --> $DIR/issue-50480.rs:12:33 - | -LL | struct Bar<T>(T, N, NotDefined, <i32 as Iterator>::Item, Vec<i32>, String); - | ^^^^^^^^^^^^^^^^^^^^^^^ `i32` is not an iterator - | - = help: the trait `Iterator` is not implemented for `i32` - = note: if you want to iterate between `start` until a value `end`, use the exclusive range syntax `start..end` or the inclusive range syntax `start..=end` - error[E0204]: the trait `Copy` may not be implemented for this type - --> $DIR/issue-50480.rs:10:17 + --> $DIR/issue-50480.rs:9:17 | LL | #[derive(Clone, Copy)] | ^^^^ @@ -104,7 +86,7 @@ LL | struct Bar<T>(T, N, NotDefined, <i32 as Iterator>::Item, Vec<i32>, String); | = note: this error originates in the derive macro `Copy` (in Nightly builds, run with -Z macro-backtrace for more info) -error: aborting due to 10 previous errors +error: aborting due to 8 previous errors -Some errors have detailed explanations: E0204, E0277, E0412. +Some errors have detailed explanations: E0204, E0412. For more information about an error, try `rustc --explain E0204`. diff --git a/tests/ui/traits/new-solver/fn-trait-closure.rs b/tests/ui/traits/new-solver/fn-trait-closure.rs new file mode 100644 index 00000000000..bd65737ee39 --- /dev/null +++ b/tests/ui/traits/new-solver/fn-trait-closure.rs @@ -0,0 +1,8 @@ +// compile-flags: -Ztrait-solver=next +// check-pass + +fn require_fn(_: impl Fn() -> i32) {} + +fn main() { + require_fn(|| -> i32 { 1i32 }); +} diff --git a/tests/ui/traits/new-solver/fn-trait.rs b/tests/ui/traits/new-solver/fn-trait.rs new file mode 100644 index 00000000000..d566ead105c --- /dev/null +++ b/tests/ui/traits/new-solver/fn-trait.rs @@ -0,0 +1,13 @@ +// compile-flags: -Ztrait-solver=next +// check-pass + +fn require_fn(_: impl Fn() -> i32) {} + +fn f() -> i32 { + 1i32 +} + +fn main() { + require_fn(f); + require_fn(f as fn() -> i32); +} diff --git a/tests/ui/traits/new-solver/pointee.rs b/tests/ui/traits/new-solver/pointee.rs new file mode 100644 index 00000000000..fa6ee2e2daf --- /dev/null +++ b/tests/ui/traits/new-solver/pointee.rs @@ -0,0 +1,23 @@ +// compile-flags: -Ztrait-solver=next +// check-pass +#![feature(ptr_metadata)] + +use std::ptr::{DynMetadata, Pointee}; + +trait Trait<U> {} +struct MyDst<T: ?Sized>(T); + +fn works<T>() { + let _: <T as Pointee>::Metadata = (); + let _: <[T] as Pointee>::Metadata = 1_usize; + let _: <str as Pointee>::Metadata = 1_usize; + let _: <dyn Trait<T> as Pointee>::Metadata = give::<DynMetadata<dyn Trait<T>>>(); + let _: <MyDst<T> as Pointee>::Metadata = (); + let _: <((((([u8],),),),),) as Pointee>::Metadata = 1_usize; +} + +fn give<U>() -> U { + loop {} +} + +fn main() {} diff --git a/tests/ui/traits/new-solver/pointer-sized.rs b/tests/ui/traits/new-solver/pointer-sized.rs new file mode 100644 index 00000000000..15681cd132e --- /dev/null +++ b/tests/ui/traits/new-solver/pointer-sized.rs @@ -0,0 +1,12 @@ +#![feature(pointer_sized_trait)] + +use std::marker::PointerSized; + +fn require_pointer_sized(_: impl PointerSized) {} + +fn main() { + require_pointer_sized(1usize); + require_pointer_sized(1u16); + //~^ ERROR `u16` needs to be a pointer-sized type + require_pointer_sized(&1i16); +} diff --git a/tests/ui/traits/new-solver/pointer-sized.stderr b/tests/ui/traits/new-solver/pointer-sized.stderr new file mode 100644 index 00000000000..b250b1331bb --- /dev/null +++ b/tests/ui/traits/new-solver/pointer-sized.stderr @@ -0,0 +1,24 @@ +error[E0277]: `u16` needs to be a pointer-sized type + --> $DIR/pointer-sized.rs:9:27 + | +LL | require_pointer_sized(1u16); + | --------------------- ^^^^ the trait `PointerSized` is not implemented for `u16` + | | + | required by a bound introduced by this call + | + = note: the trait bound `u16: PointerSized` is not satisfied +note: required by a bound in `require_pointer_sized` + --> $DIR/pointer-sized.rs:5:34 + | +LL | fn require_pointer_sized(_: impl PointerSized) {} + | ^^^^^^^^^^^^ required by this bound in `require_pointer_sized` +help: consider borrowing here + | +LL | require_pointer_sized(&1u16); + | + +LL | require_pointer_sized(&mut 1u16); + | ++++ + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0277`. diff --git a/tests/ui/traits/vtable/issue-97381.stderr b/tests/ui/traits/vtable/issue-97381.stderr index c4f8294e263..89360c44e78 100644 --- a/tests/ui/traits/vtable/issue-97381.stderr +++ b/tests/ui/traits/vtable/issue-97381.stderr @@ -1,6 +1,9 @@ error[E0505]: cannot move out of `v` because it is borrowed --> $DIR/issue-97381.rs:26:14 | +LL | let v = [1, 2, 3] + | - binding `v` declared here +... LL | let el = &v[0]; | - borrow of `v` occurs here LL | diff --git a/tests/ui/try-block/try-block-bad-lifetime.stderr b/tests/ui/try-block/try-block-bad-lifetime.stderr index ea079e30d9c..28941cb0a9e 100644 --- a/tests/ui/try-block/try-block-bad-lifetime.stderr +++ b/tests/ui/try-block/try-block-bad-lifetime.stderr @@ -4,6 +4,7 @@ error[E0597]: `my_string` does not live long enough LL | let result: Result<(), &str> = try { | ------ borrow later stored here LL | let my_string = String::from(""); + | --------- binding `my_string` declared here LL | let my_str: & str = & my_string; | ^^^^^^^^^^^ borrowed value does not live long enough ... @@ -14,10 +15,10 @@ error[E0506]: cannot assign to `i` because it is borrowed --> $DIR/try-block-bad-lifetime.rs:29:13 | LL | let k = &mut i; - | ------ borrow of `i` occurs here + | ------ `i` is borrowed here ... LL | i = 10; - | ^^^^^^ assignment to borrowed `i` occurs here + | ^^^^^^ `i` is assigned to here but it was already borrowed LL | }; LL | ::std::mem::drop(k); | - borrow later used here @@ -38,10 +39,10 @@ error[E0506]: cannot assign to `i` because it is borrowed --> $DIR/try-block-bad-lifetime.rs:32:9 | LL | let k = &mut i; - | ------ borrow of `i` occurs here + | ------ `i` is borrowed here ... LL | i = 40; - | ^^^^^^ assignment to borrowed `i` occurs here + | ^^^^^^ `i` is assigned to here but it was already borrowed LL | LL | let i_ptr = if let Err(i_ptr) = j { i_ptr } else { panic ! ("") }; | - borrow later used here diff --git a/tests/ui/try-block/try-block-maybe-bad-lifetime.stderr b/tests/ui/try-block/try-block-maybe-bad-lifetime.stderr index f738b03eed6..71c7e460c39 100644 --- a/tests/ui/try-block/try-block-maybe-bad-lifetime.stderr +++ b/tests/ui/try-block/try-block-maybe-bad-lifetime.stderr @@ -2,10 +2,10 @@ error[E0506]: cannot assign to `i` because it is borrowed --> $DIR/try-block-maybe-bad-lifetime.rs:17:9 | LL | &i - | -- borrow of `i` occurs here + | -- `i` is borrowed here LL | }; LL | i = 0; - | ^^^^^ assignment to borrowed `i` occurs here + | ^^^^^ `i` is assigned to here but it was already borrowed LL | let _ = i; LL | do_something_with(x); | - borrow later used here @@ -32,10 +32,10 @@ error[E0506]: cannot assign to `i` because it is borrowed --> $DIR/try-block-maybe-bad-lifetime.rs:40:9 | LL | j = &i; - | -- borrow of `i` occurs here + | -- `i` is borrowed here LL | }; LL | i = 0; - | ^^^^^ assignment to borrowed `i` occurs here + | ^^^^^ `i` is assigned to here but it was already borrowed LL | let _ = i; LL | do_something_with(j); | - borrow later used here diff --git a/tests/ui/type-alias-impl-trait/issue-104817.rs b/tests/ui/type-alias-impl-trait/issue-104817.rs new file mode 100644 index 00000000000..0d3bace4db1 --- /dev/null +++ b/tests/ui/type-alias-impl-trait/issue-104817.rs @@ -0,0 +1,19 @@ +#![feature(type_alias_impl_trait)] +#![cfg_attr(specialized, feature(specialization))] +#![allow(incomplete_features)] + +// revisions: stock specialized +// [specialized]check-pass + +trait OpaqueTrait {} +impl<T> OpaqueTrait for T {} +type OpaqueType = impl OpaqueTrait; +fn mk_opaque() -> OpaqueType { + || 0 +} +trait AnotherTrait {} +impl<T: Send> AnotherTrait for T {} +impl AnotherTrait for OpaqueType {} +//[stock]~^ conflicting implementations of trait `AnotherTrait` for type `OpaqueType` + +fn main() {} diff --git a/tests/ui/type-alias-impl-trait/issue-104817.stock.stderr b/tests/ui/type-alias-impl-trait/issue-104817.stock.stderr new file mode 100644 index 00000000000..47bae8bd12b --- /dev/null +++ b/tests/ui/type-alias-impl-trait/issue-104817.stock.stderr @@ -0,0 +1,11 @@ +error[E0119]: conflicting implementations of trait `AnotherTrait` for type `OpaqueType` + --> $DIR/issue-104817.rs:16:1 + | +LL | impl<T: Send> AnotherTrait for T {} + | -------------------------------- first implementation here +LL | impl AnotherTrait for OpaqueType {} + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `OpaqueType` + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0119`. diff --git a/tests/ui/type/type-check/coerce-result-return-value-2.rs b/tests/ui/type/type-check/coerce-result-return-value-2.rs new file mode 100644 index 00000000000..23bafa6c5c9 --- /dev/null +++ b/tests/ui/type/type-check/coerce-result-return-value-2.rs @@ -0,0 +1,24 @@ +struct A; +struct B; +impl From<A> for B { + fn from(_: A) -> Self { B } +} +fn foo4(x: Result<(), A>) -> Result<(), B> { + match true { + true => x, //~ ERROR mismatched types + false => x, + } +} +fn foo5(x: Result<(), A>) -> Result<(), B> { + match true { + true => return x, //~ ERROR mismatched types + false => return x, + } +} +fn main() { + let _ = foo4(Ok(())); + let _ = foo5(Ok(())); + let _: Result<(), B> = { //~ ERROR mismatched types + Err(A); + }; +} diff --git a/tests/ui/type/type-check/coerce-result-return-value-2.stderr b/tests/ui/type/type-check/coerce-result-return-value-2.stderr new file mode 100644 index 00000000000..5992162341e --- /dev/null +++ b/tests/ui/type/type-check/coerce-result-return-value-2.stderr @@ -0,0 +1,47 @@ +error[E0308]: mismatched types + --> $DIR/coerce-result-return-value-2.rs:8:17 + | +LL | fn foo4(x: Result<(), A>) -> Result<(), B> { + | ------------- expected `Result<(), B>` because of return type +LL | match true { +LL | true => x, + | ^ expected struct `B`, found struct `A` + | + = note: expected enum `Result<_, B>` + found enum `Result<_, A>` +help: use `?` to coerce and return an appropriate `Err`, and wrap the resulting value in `Ok` so the expression remains of type `Result` + | +LL | true => Ok(x?), + | +++ ++ + +error[E0308]: mismatched types + --> $DIR/coerce-result-return-value-2.rs:14:24 + | +LL | fn foo5(x: Result<(), A>) -> Result<(), B> { + | ------------- expected `Result<(), B>` because of return type +LL | match true { +LL | true => return x, + | ^ expected struct `B`, found struct `A` + | + = note: expected enum `Result<_, B>` + found enum `Result<_, A>` +help: use `?` to coerce and return an appropriate `Err`, and wrap the resulting value in `Ok` so the expression remains of type `Result` + | +LL | true => return Ok(x?), + | +++ ++ + +error[E0308]: mismatched types + --> $DIR/coerce-result-return-value-2.rs:21:28 + | +LL | let _: Result<(), B> = { + | ____________________________^ +LL | | Err(A); +LL | | }; + | |_____^ expected enum `Result`, found `()` + | + = note: expected enum `Result<(), B>` + found unit type `()` + +error: aborting due to 3 previous errors + +For more information about this error, try `rustc --explain E0308`. diff --git a/tests/ui/type/type-check/coerce-result-return-value.fixed b/tests/ui/type/type-check/coerce-result-return-value.fixed new file mode 100644 index 00000000000..8a05407070d --- /dev/null +++ b/tests/ui/type/type-check/coerce-result-return-value.fixed @@ -0,0 +1,24 @@ +// run-rustfix +struct A; +struct B; +impl From<A> for B { + fn from(_: A) -> Self { B } +} +fn foo1(x: Result<(), A>) -> Result<(), B> { + Ok(x?) //~ ERROR mismatched types +} +fn foo2(x: Result<(), A>) -> Result<(), B> { + return Ok(x?); //~ ERROR mismatched types +} +fn foo3(x: Result<(), A>) -> Result<(), B> { + if true { + Ok(x?) //~ ERROR mismatched types + } else { + Ok(x?) //~ ERROR mismatched types + } +} +fn main() { + let _ = foo1(Ok(())); + let _ = foo2(Ok(())); + let _ = foo3(Ok(())); +} diff --git a/tests/ui/type/type-check/coerce-result-return-value.rs b/tests/ui/type/type-check/coerce-result-return-value.rs new file mode 100644 index 00000000000..442203addb7 --- /dev/null +++ b/tests/ui/type/type-check/coerce-result-return-value.rs @@ -0,0 +1,24 @@ +// run-rustfix +struct A; +struct B; +impl From<A> for B { + fn from(_: A) -> Self { B } +} +fn foo1(x: Result<(), A>) -> Result<(), B> { + x //~ ERROR mismatched types +} +fn foo2(x: Result<(), A>) -> Result<(), B> { + return x; //~ ERROR mismatched types +} +fn foo3(x: Result<(), A>) -> Result<(), B> { + if true { + x //~ ERROR mismatched types + } else { + x //~ ERROR mismatched types + } +} +fn main() { + let _ = foo1(Ok(())); + let _ = foo2(Ok(())); + let _ = foo3(Ok(())); +} diff --git a/tests/ui/type/type-check/coerce-result-return-value.stderr b/tests/ui/type/type-check/coerce-result-return-value.stderr new file mode 100644 index 00000000000..55015352078 --- /dev/null +++ b/tests/ui/type/type-check/coerce-result-return-value.stderr @@ -0,0 +1,65 @@ +error[E0308]: mismatched types + --> $DIR/coerce-result-return-value.rs:8:5 + | +LL | fn foo1(x: Result<(), A>) -> Result<(), B> { + | ------------- expected `Result<(), B>` because of return type +LL | x + | ^ expected struct `B`, found struct `A` + | + = note: expected enum `Result<_, B>` + found enum `Result<_, A>` +help: use `?` to coerce and return an appropriate `Err`, and wrap the resulting value in `Ok` so the expression remains of type `Result` + | +LL | Ok(x?) + | +++ ++ + +error[E0308]: mismatched types + --> $DIR/coerce-result-return-value.rs:11:12 + | +LL | fn foo2(x: Result<(), A>) -> Result<(), B> { + | ------------- expected `Result<(), B>` because of return type +LL | return x; + | ^ expected struct `B`, found struct `A` + | + = note: expected enum `Result<_, B>` + found enum `Result<_, A>` +help: use `?` to coerce and return an appropriate `Err`, and wrap the resulting value in `Ok` so the expression remains of type `Result` + | +LL | return Ok(x?); + | +++ ++ + +error[E0308]: mismatched types + --> $DIR/coerce-result-return-value.rs:15:9 + | +LL | fn foo3(x: Result<(), A>) -> Result<(), B> { + | ------------- expected `Result<(), B>` because of return type +LL | if true { +LL | x + | ^ expected struct `B`, found struct `A` + | + = note: expected enum `Result<_, B>` + found enum `Result<_, A>` +help: use `?` to coerce and return an appropriate `Err`, and wrap the resulting value in `Ok` so the expression remains of type `Result` + | +LL | Ok(x?) + | +++ ++ + +error[E0308]: mismatched types + --> $DIR/coerce-result-return-value.rs:17:9 + | +LL | fn foo3(x: Result<(), A>) -> Result<(), B> { + | ------------- expected `Result<(), B>` because of return type +... +LL | x + | ^ expected struct `B`, found struct `A` + | + = note: expected enum `Result<_, B>` + found enum `Result<_, A>` +help: use `?` to coerce and return an appropriate `Err`, and wrap the resulting value in `Ok` so the expression remains of type `Result` + | +LL | Ok(x?) + | +++ ++ + +error: aborting due to 4 previous errors + +For more information about this error, try `rustc --explain E0308`. diff --git a/tests/ui/unboxed-closures/unboxed-closures-borrow-conflict.stderr b/tests/ui/unboxed-closures/unboxed-closures-borrow-conflict.stderr index 21d6b4fde7e..98fe97c5c18 100644 --- a/tests/ui/unboxed-closures/unboxed-closures-borrow-conflict.stderr +++ b/tests/ui/unboxed-closures/unboxed-closures-borrow-conflict.stderr @@ -4,7 +4,7 @@ error[E0503]: cannot use `x` because it was mutably borrowed LL | let f = || x += 1; | -- - borrow occurs due to use of `x` in closure | | - | borrow of `x` occurs here + | `x` is borrowed here LL | let _y = x; | ^ use of borrowed `x` LL | f; diff --git a/tests/ui/unboxed-closures/unboxed-closures-failed-recursive-fn-1.stderr b/tests/ui/unboxed-closures/unboxed-closures-failed-recursive-fn-1.stderr index cbdb4dd0fb5..23aa18d7156 100644 --- a/tests/ui/unboxed-closures/unboxed-closures-failed-recursive-fn-1.stderr +++ b/tests/ui/unboxed-closures/unboxed-closures-failed-recursive-fn-1.stderr @@ -16,14 +16,14 @@ error[E0506]: cannot assign to `factorial` because it is borrowed --> $DIR/unboxed-closures-failed-recursive-fn-1.rs:20:5 | LL | let f = |x: u32| -> u32 { - | --------------- borrow of `factorial` occurs here + | --------------- `factorial` is borrowed here LL | let g = factorial.as_ref().unwrap(); | --------- borrow occurs due to use in closure ... LL | factorial = Some(Box::new(f)); | ^^^^^^^^^ | | - | assignment to borrowed `factorial` occurs here + | `factorial` is assigned to here but it was already borrowed | borrow later used here error[E0597]: `factorial` does not live long enough @@ -47,12 +47,12 @@ LL | let mut factorial: Option<Box<dyn Fn(u32) -> u32 + 'static>> = None; | ----------------------------------------- type annotation requires that `factorial` is borrowed for `'static` LL | LL | let f = |x: u32| -> u32 { - | --------------- borrow of `factorial` occurs here + | --------------- `factorial` is borrowed here LL | let g = factorial.as_ref().unwrap(); | --------- borrow occurs due to use in closure ... LL | factorial = Some(Box::new(f)); - | ^^^^^^^^^ assignment to borrowed `factorial` occurs here + | ^^^^^^^^^ `factorial` is assigned to here but it was already borrowed error: aborting due to 4 previous errors diff --git a/tests/ui/unop-move-semantics.stderr b/tests/ui/unop-move-semantics.stderr index 2a3ca14433f..e47785c465a 100644 --- a/tests/ui/unop-move-semantics.stderr +++ b/tests/ui/unop-move-semantics.stderr @@ -23,6 +23,8 @@ LL | fn move_then_borrow<T: Not<Output=T> + Clone + Copy>(x: T) { error[E0505]: cannot move out of `x` because it is borrowed --> $DIR/unop-move-semantics.rs:15:6 | +LL | fn move_borrowed<T: Not<Output=T>>(x: T, mut y: T) { + | - binding `x` declared here LL | let m = &x; | -- borrow of `x` occurs here ... @@ -35,6 +37,9 @@ LL | use_mut(n); use_imm(m); error[E0505]: cannot move out of `y` because it is borrowed --> $DIR/unop-move-semantics.rs:17:6 | +LL | fn move_borrowed<T: Not<Output=T>>(x: T, mut y: T) { + | ----- binding `y` declared here +LL | let m = &x; LL | let n = &mut y; | ------ borrow of `y` occurs here ... diff --git a/tests/ui/variance/variance-issue-20533.stderr b/tests/ui/variance/variance-issue-20533.stderr index 008e2a002bb..258f67db5ce 100644 --- a/tests/ui/variance/variance-issue-20533.stderr +++ b/tests/ui/variance/variance-issue-20533.stderr @@ -1,6 +1,8 @@ error[E0505]: cannot move out of `a` because it is borrowed --> $DIR/variance-issue-20533.rs:28:14 | +LL | let a = AffineU32(1); + | - binding `a` declared here LL | let x = foo(&a); | -- borrow of `a` occurs here LL | drop(a); @@ -11,6 +13,8 @@ LL | drop(x); error[E0505]: cannot move out of `a` because it is borrowed --> $DIR/variance-issue-20533.rs:34:14 | +LL | let a = AffineU32(1); + | - binding `a` declared here LL | let x = bar(&a); | -- borrow of `a` occurs here LL | drop(a); @@ -21,6 +25,8 @@ LL | drop(x); error[E0505]: cannot move out of `a` because it is borrowed --> $DIR/variance-issue-20533.rs:40:14 | +LL | let a = AffineU32(1); + | - binding `a` declared here LL | let x = baz(&a); | -- borrow of `a` occurs here LL | drop(a); diff --git a/triagebot.toml b/triagebot.toml index bfbbae6857f..16a31321513 100644 --- a/triagebot.toml +++ b/triagebot.toml @@ -175,7 +175,7 @@ exclude_labels = [ "T-*", ] -[autolabel."A-bootstrap"] +[autolabel."T-bootstrap"] trigger_files = [ "x.py", "x", @@ -493,6 +493,8 @@ libs = [ ] bootstrap = [ "@Mark-Simulacrum", + "@albertlarsan68", + "@ozkanonur", ] infra-ci = [ "@Mark-Simulacrum", |